Explain the propagation of electrical impulses along a neuron including the role of myelin

Answers

Answer 1

Nerve impulses are signals that are transmitted along nerve fibers of the body.

Nerve impulses are electrical impulses. They are generated in response to stimuli.

These electrical impulses create:

action potentials as waves of depolarization that moves along the axons.

The axons contain voltage-gated ion channels that are either opened or closed by depolarization (which is the opening of ion channels leading to changes in membrane potential)

Depolarization further causes other channels to open and close thus spreading across the entire length of the axon and into another nerve cell (neuron).

Myelin sheaths act as buffers and through salt conduction help increase the speed of electrical impulses through the neurons. Not every nerve cell is insulated with a myelin sheath.

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Related Questions

2. Describe three conditioned reflexes that you exhibit while at school.

Answers

Answer:

digestion, circulation, and respiration.

Explanation:

What is an adverse effect of Rocuronium, Atracurium, Tubocurarine, Pancuronium?

Answers

An adverse effects of the drugs Rocuronium, Atracurium, Tubocurarine, and Pancuronium is high or low blood pressure.

What are adverse drug effects?

Adverse drug effects are effects produced by drugs which are not what they were intended for.

Adverse effects of drugs may range from mild to severe adverse effects.

The drugs Rocuronium, Atracurium, Tubocurarine, and Pancuronium are muscle relaxant drugs.

An adverse effects of  Rocuronium, Atracurium, Tubocurarine, and Pancuronium is high or low blood pressure.

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Which month recorded the lowest amount of ozone over the Antarctic?

Answers

The deepest ozone occurred in 1994 when the concentration sell to just 73 DU on September 30

ASAPPPP EASYYYY ILL MARK BRAINLY
Select all direct effects increasing UVR have on animals?
is
a) reduces immunity to diseases
a direct effect increasing UVR have on animals

Answers

a. reduces immunity to diseases

The effect increasing UVR has on animals is reducing immunity to diseases.

What is UVR?

A body could be heated to an incandescent temperature to generate UV radiation, which seems to be the case with solar UV, or an electric current would be sent through a gas, typically vaporized mercury, to generate UV radiation.

What are diseases?

A disease would be a specific aberrant state that adversely affects an organism's structure as well as function on the whole or in part, and which could be not immediately brought on by any external trauma.

Therefore, the correct answer will be an option (a)

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What effect will a heterotropic activator have on a sigmoidal kinetic plot of V versus [S]?

Answers

An effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] is a shift to the left by the curve.

What is an enzyme?

An enzyme refers to a biological catalyst that speeds up the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.

In Science, a heterotropic activator is a regulatory molecule which serves as an activator of the enzyme. Thus, an effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] would be a shift to the left by the curve.

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How is the law of conservation of mass applied to ecology?

Answers

Answer:

The laws of conservation of mass applies to ecology because the transfer of nutrients from organisms to the ground results in excess energy not disappearing

Answer: The law of conservation of mass states that the total amount of mass remains constant in a system. In ecology, this means that when an organism is eaten, its mass is conserved. Some of the organism’s mass is used to make new proteins, and some of it is passed as waste in the form of urine or feces. The rest is converted directly into energy. This energy helps the consumer to move and grow, and it helps it to build and repair new tissue.

Explanation: The written response for you guys

what does the sympathetic and parasympathetic do ?

Answers

The sympathetic and parasympathetic are responsible for the body's spontaneous actions, such as breathing, heartbeat, digestion, body temperature control.

What is the function of the sympathetic and parasympathetic nervous systems?

The sympathetic nervous system acts in an opposite way to the parasympathetic one, preparing the organism to react in situations of fear, stress and excitement, adapting the functioning of several internal systems to a high state of readiness.

In this case, the Sympathetic nervous system also controls body functions that are rarely conscious and parasympathetic nervous system the part of the autonomic nervous system responsible for stimulating actions that allow the body to respond to calm.

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How many of Earth's spheres does
the carbon cycle move through?
A. one
B. a few of the Earth's spheres
C. impossible to know
D. all of the Earth's spheres

Answers

The carbon cycle moves through virtually all of the earth's spheres.

Carbon cycle

There are 4 majors spheres of the earth:

AtmosphereGeosphere or LithosphereBiosphereHydrosphere

The carbon cycle moves through the air (atmosphere), oceans (hydrosphere), organisms (biosphere), and the soil (geosphere).

Thus, the carbon cycle moves through all the spheres of the earth.

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Answer: D. all of the Earth's spheres

Explanation:

based on sex assigned at birth, women tend to reach higher bac levels more quickly than men because:

Answers

Women tend to reach higher bac levels more quickly than men because they have lower levels of the enzyme alcohol dehydrogenase.

What is BAC levels?

BAC levels refers to the blood alcohol levels.

Women tend to reach higher BAC levels than men.

The enzyme alcohol dehydrogenase is responsible for the metabolism of alcohol.

Women generally have lower levels of the enzyme in their body and thus metabolize alcohol more slowly.

Thus, women reach higher BAC levels than men.

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Plant cells are different from animal cells in this way:

Answers

Answer:

C . Cell wall and Chloropylast is correct answer

Explanation:

Because plants don't move so they have cell walls and chloroplasts but human cell moves so they don't need cell wall

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[tex]\red:\implies[/tex] Cell Wall ; Chloroplasts

➥ Plants are autotrophic organisms which manufacture their own food. Plant cells have chlorophyll containing chloroplasts which are involved in the process of photosynthesis. A plant cell is surrounded by cellulosic cell wall which is dead at maturity. Chloroplasts and cellulosic cell wall are characteristics of plant cells only.

Axial skeleton (how many bones and what?)

Answers

Axial skeleton is composed of 80 bones in the body system.

What is Axial skeleton?

These are bones which are found in the central core of the body and examples include skull, vertebrae etc.

The axial skeleton comprises of 80 bones which perform various types of functions in the body.

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suggest why a plant cell in 0.10 mol dm salt solution will not burst

Answers

Answer:

So, the correct answer is 'Cells wall is rigid and does not get overstretched'

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Which trait is most likely to be selected in the population of plants growing in this region of the desert?

Answers

The ability to limit water transport and to conserve it is the feature most likely to be chosen in the  plants growing in the desert.

Since the plants in desert regions are tiny, have deep roots, and have a thick,  which also helps to keep the plants cool and slows evaporation, they lose less water and are more effective in hot temperatures like deserts. Animals cannot consume the majority of desert plants because they have. As a result of cactus and aloe vera flourishing in this area of the desert, The flora is frequently seen in deserts.

So  The ability to limit water transport and to conserve it is the feature most likely to be chosen in the  plants growing in the desert

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In the process of _________________________________ one sperm fertilizes the egg, and the other fuses with 2 gametophyte nuclei to form the first endosperm cell. This process occurs in gymnosperms and angiosperms.

Answers

Answer: in the process of polyspermy development

Explanation:  in most cases the egg cell blocks polyspermy

How do humans differ from chimpanzees?

Answers

They walk on all fours , they can’t swim , shorter lifespan, extra chromosomes

Humans and chimpanzees are both mammals but they have characteristics that different or set them apart from each other. These characteristics include;

- Chimpanzees work on all four legs while humans walk on only two legs
- Chimpanzees avoid river/oceans because they do not know how to swim while humans can learn how to swim with constant practices
- The body of a chimpanzee is covered with thick hairs while humans do not have as much hair on the body
- Humans have an S shaped spine while chimpanzees have a C shaped spine

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Imagine an instance where there are two parents, and both have polydactyly, a trait which is determined in this example by a singel gene. They have four children, one of hwom have polydactyly. what is the probailty their next child witll have polydactyly

Answers

The probability that their next child will have polydactyly is 0.75

What is Polydactyly?

Polydactyly may be characterized as a circumstance in which an individual has more fingers or toes as compared to normal.

In humans, it occurs due to the homozygous mutants for a HOXD13, and due to which digits are joined and a condition known as Polysyndactyly occurs.

If both parents carry the genotype heterozygous for Polydactyly, i.e. Pp, the resultant offspring will have the genotypes PP, Pp, Pp, and pp. In which pp is normal, while all the three are affected due to the expression of dominant allele causing Polydactyly.

Now, according to the question, only one of the offspring possess the genotype of pp, hence the probability of their next child will have polydactyly is [tex]\frac{3}{4}[/tex] = 0.75.

Therefore, the probability that their next child will have polydactyly is 0.75.

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Which thermoregulation strategy helped the hummingbird decrease its body
temperature?
a. flying
b. eating
c. basking in the sun
d. resting in the shade
submit

Answers

The thermoregulation strategy helped the hummingbird decrease its body

temperature is resting in the shade. Thus, option "D" is correct.

What is Thermoregulation?

Thermoregulation itself is actually a branch of homeostasis. Homeostasis is defined as the internal regulation of body environment which includes the vital organs of the body such as the heart, liver, brain and contraction of skeletal muscles.

Thus, option "D" is correct.

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Which bronchus is about 5cm long and slightly narrower and more horizontal than the one on the opposite side?.

Answers

Answer:

Explanation:

left main bronchus

What is it that makes diseases caused by viruses and bacteria hard to treat?

Answers

Answer:Why are diseases caused by viruses often difficult to treat?

Explanation

Viruses are much harder to treat since they are within the human host cells. Most antiviral medications slow down the virus but do not kill it. Antivirals keep the infection under control, or stop the virus from multiplying, while your immune system does the heavy lifting.

Answer:

Antimicrobial resistance  all of a sudden happens when germs and fungi develop and then it gives the ability to kill the drugs designed to kill them  hundred times smaller then human cells

Explanation:hope that helps have a great day and stay safe (;..... p:s this is ashely/cee cee

which type of cells are spherical and contain energy molecules?

Answers

Fat cells is the answer to your question

The type of cells that are spherical and contain energy molecules are fat cells

What is a fat cell?

A fat cell is a connective cell in the body that is spherical in shape that is use to store and produce energy, fatty acids and help to store fat. Fat cells are a form of connective tissues in the body that generate ATP and also store fat in adipose tissue.

Therefore, The type of cells that are spherical and contain energy molecules are fat cells

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What telescope would be used to find a black hole?

Select one:

a.
Chandra


b.
Spitzer


c.
Compton Gamma Ray Observatory


d.
James Webb

Answers

the chandra telescope can be used to see blackholes

Chandra telescope would be used to find a black hole. Therefore, option (A) is correct.

The Chandra X-ray Observatory is a space telescope that was developed with the express purpose of detecting and researching X-ray emissions coming from various astronomical bodies. Observing the powerful X-ray radiation released from the neighbourhood of black holes, particularly their accretion discs and jets, has been an essential part of the process that led to the discovery of black holes and the investigation of their properties.

Because of the important new information it has uncovered about the characteristics and actions of black holes, Chandra has become an essential instrument in this field of study.

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Black eyes are dominant to orange eyes, and green skin is dominant to white skin. A male MendAlien with black eyes and green skin, has a parent with orange eyes and white skin. A female MendAlien with orange eyes and white skin. If these male and female MendAliens were to mate, the predicted phenotypic ratio of their offspring would be _____.

Answers

The phenotypic ratio of their offspring would be 1/4 each for black eyes/green skin, black eyes/white skin, orange eyes/green skin, and orange eyes/white skin respectively.

Dihybrid crossing

The male would be heterozygous since he has a parent that is homzygous recessive.

Assuming that eye color is A/a and skin color is B/b.

The genotype of the male would be: AaBb

The genotype of the female would be: aabb

                   AaBb    x    aabb

Progeny

A_B_ = Black eyes, green skin = 1/4

aaB_ = orange eyes, green skin = 1/4

A_abb = black eyes, white skin = 1/4

aabb = 1orange eyes, white skin = /4

See the attached image for the Punnet's square analysis.

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Drag the tiles to the correct boxes to complete the pairs.
Match the factors affecting genetic diversity with the examples.
m. All rights reserved.
habitat fragmentation
pollution
exploitation
sewage from cities dumped into vers
sections of large forests cut down for resources
Burmese pythons Infesting the Everglades
rhinos Indiscriminately killed for their horns
▶ O GE
invasive species
101
N

Answers

Factors that affect genetic diversity are:

sewage from cities dumped in vers - pollutionsections of large forests cut by resources - habitat fragmentationBurmese pythons infesting the Everglades - invasive speciesrhinos indiscriminately killed by their horns - exploration

What is genetic diversity of an example?

The diversity of alleles of individuals of the same species is what we call genetic variability.

Haireyeskin colorheight and voice,

for example, are characteristics present in human beings that make us quickly understand that we have phenotypic variations in relation to others.

With this information, we can conclude that Factors that affect genetic diversity are: sewage from cities dumped in vers - pollution, sections of large forests cut by resources - habitat fragmentation, Burmese pythons infesting the Everglades - invasive species, rhinos indiscriminately killed by their horns - exploration

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Which action is likely to cause air to enter the victim’s stomach (gastric inflation) during bag-mask ventilation?

Answers

The action that is likely to cause air to enter the victim’s stomach (gastric inflation) during bag-mask ventilation is ventilating the patient when is chest is not rising.

What is gastric inflation?

Gastric inflation is the process in which air is been blown into the stomach of the patient which can be as a result of inflation of the lungs during lung or bag mask ventilation.

Therefore, The action that is likely to cause air to enter the victim’s stomach (gastric inflation) during bag-mask ventilation is ventilating the patient when is chest is not rising.

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Environmental factors can influence natural selection because they can increase or decrease and what can they increase or decrease in

Answers

Environmental factors can influence natural selection because they can increase or decrease and what can they increase or decrease in the amount of genetic variation in a population.

What is natural selection?

Populations of living things adapt and change through a process called natural selection. A population's members are naturally varied, which means that they are all distinctive in some ways. Because of this variety, some people have characteristics that suit their surroundings more than others.

Four requirements must be met for natural selection to take place: reproduction, inheritance, variety in physical traits, and variation in the number of children produced by each person.

Reproduction:

A population must procreate to produce a new generation in order for natural selection to affect it. Over many generations, people who have the characteristics that are most compatible with their environment tend to breed more than people who don't.

Heredity:

Since the genes of the parents combine to form the DNA of their offspring, heredity and reproduction go hand in hand. Natural selection must operate if parents with favourable qualities pass those traits on to their kids.

Variation in Characteristics:

Only when individuals within a community differ in their personal features can natural selection take place. For instance, different people must have varied colors in order to research natural selection on color within a population. There wouldn't be any traits for nature to "select" over others in the absence of variety in traits.

Fitness Variation:

Compared to its popular notion, fitness has a more technical meaning. Fitness in the context of evolution refers to an organism's capacity for maximum survival and reproduction. Natural selection cannot take place in a population unless its individuals have varying levels of fitness. Some people must have characteristics that make it easier for them to survive and procreate more frequently than others. Otherwise, natural selection cannot act to increase the number of people with advantageous features and decrease the number of people with undesirable qualities.

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volume and pressure inside the left ventricle at the end of diastole is referred to as:

Answers

The volume and pressure inside the left ventricle at the end of diastole is referred to as end-diastolic volume and end-diastolic pressure respectively.

What is a diastole?

A diastole is the part of the heartbeat cycle when the heart muscle relaxes and allows the heart chambers to fill with blood.

The volume inside the left ventricle at the end of diastole is referred to as end-diastolic volume.

The pressure inside the left ventricle at the end of diastole is referred to as end-diastolic pressure.

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why do cell biologists study yeast?

Answers

Biologists study cells due to the cell relation to that of animal cell

What are yeasts?

Yeast are eukaryotic organisms which are part of the fungus kingdom.

They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals

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Which of these describes ATP?

A. the site of photosynthesis
B. genetic material
C. energy storage
D. cell waste

Answers

Answer:

C

Explanation:

ATP has to do with energy so the correct answer would be energy storage.

The one that describes ATP is energy storage. The correct option is C.

What is ATP?

A chemical that is a part of all living cells and gives energy to a variety of metabolic processes, including the production of RNA.

In patients with advanced solid tumors, the effects of laboratory-produced ATP on weight loss and muscle strength are being investigated. Likewise known as adenosine triphosphate.

The principal energy source for critical biological processes such muscular contraction, nerve impulse transmission, and protein synthesis is ATP generated in mitochondria.

For example, large levels of ATP signal that the cell has enough ATP and does not need to produce any more through cellular respiration. In this instance, a product "feeds back" to block its pathway, which is a form of feedback inhibition.

Thus, the correct option is C.

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Which statement provides an environmental reason to use renewable paper bags instead of nonrenewable plastic bags?

Answers

Answer:

it's not easy to destroy plastics if we use nonrenewable plastics u will have to throw them and they will become poison to the insets

Plastic takes about 1000 years to decompose wallpaper takes a measly fraction of that amount To fully decompose

list down the food items that are generally spoiled by the presence of bacteria

Answers

Answer:

The most common food item that is spoilt by bacteria is dairy products,canned food,fish meat etc.

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Your sister is thinking about starting a new business. The company would require $355,000 of assets, and it would be financed entirely with common stock. She will go forward only if she thinks the firm can provide a 13.5% return on the invested capital, which means that the firm must have an ROE of 13.5%. How much net income must be expected to warrant starting the business The court cases San Antonio Independent School District v.Rodriguez and Serrano v. Priest dealt with concerns over ______. 4. Use the formula for the area of a circle to derive the formula for the area of a sector. 8) Mark ran a mean distance of 13.2 km in five days. The next day, Mark ran 20 km.Find the mean distance Mark ran in the six days. with not or with is the question square root of 342354456 is a system of principles and standards of right or wrong in human behavior. How is the jackson prairie region different from the black prairie regionA. It is part of the black beltB. It has dark, fertile soil.C. It is excellent for agriculture D. It is heavily wooded A scientist notices that a lump of niobium is warm to the touch and wonders if nuclear reactions are taking place in the metal. How can she find out?. You toss a coin and roll a number cube. The table shows the sample space,where H means heads, T means tails, and the numbers represent the numbercube roll.HT1H1T12H2T23H3T34H4T45H5T56H6T6What is the probability of tossing heads and rolling a number less than 3? 2. Estimate the square root to the nearest integer. 5 4 6 7 Which of the following is the electron configuration of an atom in the ground state?(a) 1s2 2s1(b) 1s2 2s2 2p5 3s2 (c) 1s2 2s1 2p6(d) 1s1 2s2 it may be necessary to employ the use of_________ services to accommodate a language your patient understands. Nadine had 20 minutes to do a three-problem quiz. She spent 10 7/10 minutes on question A and 6 2/5 minutes on question B. How much time did she have left for question C? Read the sentence.Because I had my vaccinations on schedule, I do not worry about getting measles.The change of verb tense indicates _____.vivid verb usageevents that recur regularlyevents that need perfect verbsevents that happened at different times 18At Kar's school, everyone is wearing pink shirts on May 4. What are they MOST likely trying to promote?OA an anti-bullying messageOB. equal pay for womenOC. heart disease awarenessO D.a healthy eating campaign 1. 2. 3. 4. Tourist: How can I travel to Lalibella? Travel agent: A. B. C. D. Their new house is more big than bigger than A. B. I suggest that you hire a four-wheel drive. Lalibella is one of great tourist sites of our country. It is a long way from here. You can see different places on your way. If you A. B. A. B. had blocked were to block Nor Either C. D. the normal flow C. D. the one they sold. the biggest of big than of water, it finds its own course. blocked block Sophanit and Aster joined Addis Ababa University in 2002. C. Both D. Neither 1 . 2 . 3 . 4 . Tourist : How can I travel to Lalibella ? Travel agent : A. B. C. D. Their new house is more big than bigger than A. B. I suggest that you hire a four - wheel drive . Lalibella is one of great tourist sites of our country . It is a long way from here . You can see different places on your way . If you A. B. A. B. had blocked were to block Nor Either C. D. the normal flow C. D. the one they sold . the biggest of big than of water , it finds its own course . blocked block Sophanit and Aster joined Addis Ababa University in 2002 . C. Both D. Neither Solve the following system of equations. Show all work and solutions.y = 2x2 + 6x + 4y = 4x2 + 4 In god we trust or God bless America Water or sodaOne million dollars or Ryan ReynoldsBlack or white Or panda You drive 8.50 km in a straight line in a direction 30 East of North.(a) Find the distances you would have to drive straight East and then straight North to arrive at the same point. (This is equivalent to finding the components of the displacement along the East and North directions.) km East km North(b) Show that you still arrive at the same point if the East and North legs are reversed in order.