Where are semilunar valves to be found in a mammalian heart?

Answers

Answer 1

Answer:

at the base of the aortic and Pulmonary trunk

Explanation:

Structurally the mammalian heart is made up of  blood vessels for the empty of the blood from the  heart chambers -the ventricles. Due to the forceful contraction of the blood against gravity into theses vessels,there are tendency for the back flow, from the vessels back into the ventricles.

These may lead to mixing of deoxyganted with oxygenated blood.

Aorta  is the largest artery in the heart.It takes oxygenated blood from the heart into the systemic circulations.To prevent the back flow of the pumped blood after the L.ventricular systole,layers of valves shut up,and stop the flow of blood back into the ventricles.. These are the semilunar vlaves at the bases of the Aorta. The sound produced by this shutting up is called the dupp sound.

Likewise deoxygenated blood flow into the pulmonary circulation en-route the lungs is transported by the Pulmonary trunks.Therefore to prevent the back flow of the deoxygenated blood back into the pulmonary trunk, thes semilunars valves are closed,after  R. ventricular systole

These two valves ensures that  R and L  Ventricular  contraction for the ejection of oxygentated and deoxygented blood occurs without backlow and therefore no mixing of the two types  occurs.


Related Questions

What is the independent variable in an experiment? A) The variable that remains the same throughout the experiment. B) The variable being tested in the experiment. C) The variable being measured in an experiment.

Answers

Answer:

A

Explanation:

looked it up for reassurance

What is loveand it's causes​

Answers

When you first fall in love, you experience a rush of hormones to the brain — including oxytocin, the “love hormone,” the “pleasure hormone” dopamine, and sex hormones like estrogen and testosterone. ... This influx of hormones plays a major role in those intense feelings of fluttery excitement, attraction and euphoria.

Answer:

this is also a disease which make maid to the people

Identify the food that is a rich source of the protein gluten.


a. Mashed potato

b. Wheat bread

c. Boiled egg

d. Tapioca pudding

e. Rice cake

Answers

Answer:

boiled egg.... is the correct answer...

Gluten is a protein found naturally in grains such as wheat, barley, and rye. Wheat bread is the food that is a rich source of the protein gluten.

What exactly is gluten protein?"As humans, we have consumed gluten for as long as bread has been made." Gluten-containing foods have long provided people with protein, soluble fiber, and nutrients."Gluten, especially gluten found in whole grains, is not toxic to healthy people whose bodies can tolerate it.Gluten is a protein found in grains like wheat, barley, and rye. It acts as a binder, holding food together and giving it a "stretchy" texture, similar to how a pizza maker would toss and stretch out a ball of dough.Bread. This includes all breads (except those labelled "gluten-free"), as well as rolls, buns, bagels, biscuits, and flour tortillas.

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#SPJ2

Which motion of particles across a membrane requires energy?
O from high concentration to low concentration
from low concentration to high concentration
with no concentration gradient
O through dynamic equilibrium

Answers

Answer:

B. From low concentration to high concentration

Explanation:

I got it right on edge :)

Answer:

B

Explanation:

You can think of it as a very useless sponge and water.

If you have a dry sponge you can consider this an area of low concentration, and the bucket of water as an area of high concentration of water.

It is easy to soak up water with a dry sponge with osmosis when the high concentration easily fills the low concentration sponge.

On the other hand, a soaked sponge will have a great time trying to soak up a bucket of water with an already wet sponge.

This is a crude example of differing high to low or low to high concentration.

Osmosis is limited to water particles, whereas diffusion is basically molecules.

 

Osmosis is the movement of water along the concentration gradient.

Active transport is the use of energy to move particles against the concentration gradient so it is active, it is attempting to enact homeostasis.

Passive transport is the movement of particles by diffusion without energy so it is just passive, not aggressive.

Diffusion is the movement of particles along the concentration gradient.

for which of the following purposes would a transmission electron microscope be the best type of microscope to use?

A. studying the structures of living paramecium
B. Looking at the surface features of a virus
C. Seeing animal tissue that is visible to the naked eye
D. Viewing a cell's mitochondria in detail

Answers

Answer:

d. viewing a cells mitochondria in details

Answer:

D

Explanation:

Which description is accurate regarding newspaper maps?
PLEASE HELP NOW

include isobars
are created using more complicated maps
are a good resource for long-range planning
are used by meteorologists to create other maps

Answers

Answer:

good resource for long range planning

Explanation:

let me know if its correct

Answer:

A

Explanation:

Which of the following sentences best describes what happened to the pansies receiving liquid fertilizer?

Answers

Answer: They grew more during week 1 than any other week.

Explanation:

It reads it on the graph and I also just answered the question.

Answer:

They grew more during week 1 than any other week.

Explanation:

Edge 2020-2021

Why do doctors have to check what blood type a person has before receiving a transfusion?
A. Different blood types have different antibodies that will be attacked by someone with antigens against that blood type.
B. Different blood types have different antigens that will be attacked by someone with antibodies against that blood type.
C. They need to have the same blood type because their DNA must be similar enough to blend or will cause side-effects and possibly be rejected.
D. Your blood type doesn't matter as long as you get the correct amount of blood in a transfusion.

Answers

Answer:

A and B

Explanation:

Doctors need to check the blood type of a person before administering blood transfusion because different blood types have different antibodies that will be attacked by someone with antigens against that blood type.

The blood that would be given to a person must match the blood of that person in terms of the type of antigens. If the blood antigens are different, the antigens present in the blood of the individual undergoing blood transfusion would consider the antigens present in the blood being received as an enemy and attack it. This will lead to agglutination of the blood in the system of the person, a process that often leads to death.

Hence, O-positive individuals must always receive O-positive blood while O-negative individuals must always receive O-negative blood.

The correct options are A and B.

What type of cell organelle is only found in animal cells? (1 point)
ribosomes
vacuole
cytoplasm
lysosomes



Answers

Answer:

lysosomes

Explanation:

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.

Among the given options only  lysosomes is  found animal cells

Animal cells can be regarded as  eukaryotic cells containing membrane-bound nucleus as well as other membrane-bound organelles.

The organelles  contained in this cell are there to carry out specific functions which the body needs for the normal functioning of the cell.

Some of the organelles that can be found in the cell of animals are:

 nucleus

cytoplasm

nucleolus

mitochondria

Lysosome.

Ribosomes, vacuole and cytoplasm can as well be found in plant cell not only in animal cell.

lysosome can be regarded as membrane-bound cell organelle which has some contains digestive enzymes in it, that helps in breaking down of excess as well as worn-out cell parts.

Therefore, among the given options only lysosomes found animal cells

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How many centimeters are in 33 inches? 1 inch=2.54 cm

Answers

Answer:

There are 83.82 centimeters in 33 inches.

Answer:

1 inch=2.54 centimeters

Expansion:

Multiple by length value by 2.54

All mail leaving a physician’s office represents the professionalism of the physician and his or her staff. A medical assistant is responsible for the written communication and makes several glaring mistakes in grammar, spelling, and punctuation. What mistakes would make the letter unmailable? What would you do to help the medical assistant correct the problem?

Answers

Answer:

Medical-related errors such as, for example, improper drug doses. These errors may be avoided by learning medical terminology, especially publications in the field of study (health care/medicine)

Explanation:

Communication errors represent a serious problem when they alter the specific instructions of therapies and treatments. These errors include mistakes in prescription, wrong times, omission, inexact drug names, improper doses, wrong dose preparation, incorrect administration, etc. A medical assistant is responsible both for writing medical documentation and for transcribing this Information. By reading publications in the field of study, a person can be rapidly trained to understand highly specific medical terminology, thereby avoiding transcription problems and communication errors.

The mistakes that will make the letter unmailable can be due to wrong drug

prescription or medical terminology used. I would ensure that the test

results are cross-examined and the appropriate terminology are explained

used.

A mail leaving the physician office must be very accurate as it deals with the

prescription of drugs to cure an ailment. A mistake in the letter can lead to

the wrong drug and dosage used by the patient which may lead to death.

The medical assistant has to ensure the test results align with the drug ,

dosage and terminology used to prevent serious issues.

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Define clouds in your own definition and reflect it in your life​

Answers

Answer:

clouds are coulds

Explanation:

could are just clouds

the diagram shows the general structure of a lipid l, which consists of two main parts.
which part is circled?
a- alcohol group
b- fatty acid
c- carboxyl group
d- unsaturated lipid

Answers

Answer:

The correct answer is - carboxyl group.

Explanation:

Lipids are one of the major macromolecules that are made up of fatty acid and carboxyl groups as two main parts of the molecules. The most common type of lipid is formed with the glycerol associated with the fatty acid chain.

In the provided structure the circled part is the carboxyl group with the long fatty acid chain. However, glycerol belongs to the alcohol group.

Thus, the correct answer is - carboxyl group.

how can chimpanzees have different traits from one another

Answers

Answer: Because they have different genes.

Hope this helps! <3

Answer: They have different genes.

Explanation: took the quiz.

The______is a signifiant site of absorption of water and elcrtrolytes but not of nutrients.
a. mouth.
b. stomach.
c. intestine.
d. large intestine.

Answers

Answer:

D

Explanation:

Pls check the attachment,technical reasons

Which is an example of a chemical change. A candle burns. A teaspoon of salt dissolves

Answers

Answer:

Both are actually chemical changes but a candle burning is a better example of a chemical change

Explanation:

Hope it helps

Answer:

It's a candle burning

Explanation:

match the mRNA sequences to their DNA sequences

Answers

No pic no answers lol

repost ur question with a pic of the problem.

thanks for the free points tho have an amazing day

Write an argument that supports that a car is a LIVING organism.

Answers

Answer:

Explanation:

a car is a living organism because like all living organismkkkk it needs food/fuel in order to function.

For the following questions, please fill in the blank with the correct number of chromosomes (e.g. 4). Please do not spell out the number (e.g. four) or include any kind of punctuation (e.g. 4.). In an organism where the diploid number of chromosomes is 2N=16, how many chromosomes would you expect to find in cells that are in G2 of the cell cycle?

Answers

Answer:

Double number of chromosome.

Explanation:

There are 16 chromosomes in G2 phase of the cell cycle because in G2 phase, the replication of DNA occurs which doubles the number of chromosome. It is a gap phase present between replication of DNA and mitosis so it contains 16 number of chromosomes in the cell. After mitosis, the chromosomes number distributed equally among daughter cells.

16.)Which of the following properties of water help to dissolve sugar?
A.) adhesion
B.) cohesion
C.) surface tension
D.)Universal Solvent

Answers

Answer:

D

Explanation:

The property of water that helps it to dissolve sugar is the universal solvent property.

Water has the inherent attribute to dissolve a wide variety of substances due to the arrangement of the atoms that make up water molecules. The molecules of water are made up of hydrogen and oxygen, with the latter being negatively charged while the former is positively charged.

The polar arrangement gives water the capacity to be able to dissociate ionic substances into their respective positive and negative ions and also allow water to dissolve more substances than any other solvent in the world.

The correct option is D.

If a solution is undergoing a reaction where CO2 is being created a product, what color is the phenol red-containing solution shifting toward?

Answers

Answer:

YELLOW

Explanation:

Phenol red is a biological indicator used to monitor changes in pH. The phenol red indicator changes color ranging from yellow to pink with respect to changes in pH. In an acidic pH i.e. <7, the phenol red changes to a YELLOW color while in an alkaline pH i.e. >7, the phenol red changes to a PINK pH.

The presence of carbon dioxide (CO2) increases the hydrogen ion concentration (H+) of a solution (lowering its pH or making it acidic).

Therefore, in a reaction where CO2 is created as a product, it means the CO2 content of that solution increases. Hence, the phenol red solution will be shifting towards the YELLOW color in response to a decreasee in pH (acidic).

If a solution is undergoing a reaction where CO2 is being created a product, the phenol red-containing solution will be shifting toward the yellow color.

An indicator is an organic dye that changes its color as the pH of the solution changes. An indicator has a different color in acid, base and neutral media.

Phenol red has a yellow color in acidic medium and red color in a basic medium.

Since the production of CO2 lowers the pH of the system, the color of the solution shifts towards yellow.

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1. What percentage of American Farms are family operated?

Answers

97% of all American farms are family operated. Hope this helps!

) Mention two areas where CBT can be used to train people.​

Answers

Answer:

By office staffs and actors.

Explanation:

Cognitive behavioral therapy (CBT) can be used for the people who work in offices and going to stage for performing the plays. Some people in offices can't do presentation due to low confidence, fear or anxiety so Cognitive behavioral therapy is very effective for them. This therapy can also be used for the people who can't perform plays or acting in front of large audience.

What is true of protein glycosylation in the ER?
A. Only proteins phosphorylated on an asparagine residue become glycosylated.
B. Sugar residues are added one at a time by a series of enzymes attached to the ER membrane. C. A block of sugar residues is added to the N-terminal signal sequence, creating a common, N-linked oligosaccharide.
D. Only proteins bearing a dolichol residue become glycosylated.
E. Oligosaccharides are added by an enzyme that has its active site on the lumenal side of the ER membrane.

Answers

Answer: A. Only proteins phosphorylated on an asparagine residue become glycosylated.

Explanation: Protein glycosylation helps in proper folding of proteins, stability and in cell to cell adhesion commonly needed by cells of the immune system. The major sites of protein glycosylation in the body are ER, Golgi body, nucleus and the cell fluid.

hope this helps

Plz mark brainliest

The division of the cytoplasm and organelles occur during
O Interphase
O. Cytokinesis
OS phase
O Metaphase

Answers

Cytokinesis because now the cells are multiplying
Cytokinesis

Hope this helps!! :))

Briefly describe the terms "Drug" and "Addiction​

Answers

Answer:

drug: a medicine or other substance which has a physiological effect when ingested or otherwise introduced into the body.

addiction: the fact or condition of being addicted to a particular substance, thing, or activity.

Explanation:

Which of the genotypes below would be heterozygous? Choose all that are.

Answers

Dd,Bb,Tt,Fr are the answers

Cell membranes are primarily made of a component that contains fatty acids. This component is most likely a...

Answers

Answer:

Lipid

Explanation:

Fatty acids fit into the category of lipids.

Answer:

Lipid

Explanation:

The structures in the lungs where gas exchange occurs are called ___________.

Answers

Answer:

Alveoli

Explanation:

Gas exchange refer to the transmission of oxygen from the lungs to the bloodstream and removal of carbondioxide from the bloodstream to the lungs.

Gas exchange occur in the alveoli of the lungs and the capillaries envelope in them. Alveoli is responsible for diffusion of gases to the blood stream through the lungs and removal of gases.

Inhaled oxygen is moved from the alveoli to the blood capillaries and carbondioxide is eliminated from the blood capillaries into the alveoli.

PALS Which statement about hydrocortisone is NOT correct? Hydrocortisone cannot be used for adrenal insufficiency associated with septic shock. A common side effect is hyperglycemia. Hydrocortisone inhibits vascular leak due to proinflammatory mediators. Hydrocortisone is classified as a corticosteroid.

Answers

Answer:

Hydrocortisone inhibits vascular leak due to proinflammatory mediators.

Explanation:

Hydrocortisone is a corticosteroid anti-inflammatory medication capable of reducing the body's immune response, and thus reduce pain and itching. Hydrocortisone treatment is used in different health problems, including, among others, piles and itchy bottom, mouth ulcers, skin problems, adrenal insufficiency, etc. This drug is also utilized in persons that don't produce enough cortisol, a natural stress hormone. It has been shown that hydrocortisone may lead to enhancement of vascular leak, which suggests secondary effects on myocardial and endothelial cells.

Hydrocortisone inhibits vascular leak due to proinflammatory mediators.

Hydrocortisone is a corticosteroid anti-inflammatory medication that relieves pain and itching by decreasing the body's immunological reaction. It is used to treat piles and itchy bottoms, mouth ulcers, skin diseases, adrenal insufficiency, and other conditions. People who don't produce enough stress hormones may benefit from this medicine. The statement about hydrocortisone that is not correct is ''Hydrocortisone inhibits vascular leak due to proinflammatory mediators.''

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BRAINLIEST +15 POINTS UP FOR GRABS!!!Pick all line pairs that intersect each other.1. Line AB and Line CD2. Line CD and Line BE3. Line BE and Line AB4. No two lines shown intersect each other.WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER (STEP-BY-STEP APPRECIATED)! Need help please. In the number 4,001,982.57........ .. .What digit in the hundredths place. For any two integers x and y, l x + y l = l x | + l y ltrue or false? Solve for a.2a - 8 = - 36 Solubility of CO2 in g/100 g waterSolubility of Oz in g/100 g waterTemperature in CIndependent VariableDependent Variablepls helppp asap Evaluate the expression.3 (x + y), x = 5 and y = 2 solve the equation by finding the square rootsw^2-36=-64 1. A toy car is marked to go at 0.5m/s, which of the following sets ofexperimental numbers stay precise? *a. 1.5m/s, 0.9m/s, 0.8m/s, 1.1m/sO b. 0.6m/s, 0.7m/s, 0.61m/s, 0.62m/sc. 2.1 m/s, 2.0m/s, 2.03m/s, 2.4m/sd. 3.1m/s, 3.0m/s, 2.9m/s, 3.0m/s Solve the equation |-2y+5|=2|3y-1| Choose all the true statements about oxidative phosphorylation.A. Oxidative phosphorylation occurs in the inner mitochondrial membrane. B. The oxidation of NADH provides enough energy to produce three ATP molecules. C. Oxidative phosphorylation is an anaerobic process. D. The oxidation of FADH, provides enough energy to produce three ATP molecules. E. Oxidative phosphorylation and the electron transport chain are called coupled reactions. tammy purchased a prepaid phone card for $20. long distance calls cost 24 cents a minute using this card. tammy used her card only once to make a long distance call. if the remaining credit on her card is $12.32. how many minutes did her call last? everyone ____to be respected A veto by president Andrew Jackson led to the creation of which of the following political parties ? the diameter of a water molecule is 0.000000000275 m. how can this number be expressed in scientific notation. 60:48 in its simplest form They worked for three to seven years to pay their way to America What does Mrs. Jones mean when she says that shoes got by devilish ways will burn your feet"? 2. A student wishes to find the density of an irregularly shaped rock. He finds the mass to be 12.34g. He fills a graduated cylinder to the 50.0 mL mark and drops in the rock. The fluid level rises to54.5 mL. What is the density of the rock? (Show all work, with units, for credit.) what density will an object have if the mass of it ia 46g and it takes up 561 mL of space? Factor completely:6z2 + 18z