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IRISSAK [1]
4 years ago
10

During exercise, venous return of blood to the heart increases. based on your knowledge of starling's law, what would happen to

stroke volume during exercise?
Biology
1 answer:
trapecia [35]4 years ago
6 0

Answer:

The stroke volume of the heart will also rise since exercise is the process where heart is working with great internal pressure or we can say it is in a state of being distended, this ultimately will cause a greater strength of contraction.

This is just in accordance with Stroke’s law that states that stroke volume of the heart increases if the volume of blood in the ventricles, before contraction if all other factors remain same or unchanged. When a large amount of blood rushes in the ventricle, it stretches the muscle fibers of heart that ultimately causes a rise in the force of contraction.  

Significance:

This actually helps in the synchronization of output from heart with arterial blood supply, venous return and humoral length without regulating or producing any other changes in the body.


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Many studies have indicated that there is some genetic influence on body weight and composition. Researchers have established a
sukhopar [10]

Answer:

A

Explanation:

The thrifty gene hypothesis postulates that due to dietary scarcity during human evolution, people are prone to obesity by storing energy as fat, an ability to take advantage of rare periods of abundance  and this is advantageous during times of food availability. individuals with greater adipose reserves would more likely survive famine. This tendency to store fat could lead to obesity.

FTO is an enzyme that is encoded in humans by FTO gene located on chromosome 16. Increase in this enzyme is associated with the regulation of energy intake but not feeding reward. Also, the set point theory indicates that bodies are meant to stay within a narrow weight range but it is susceptible to chnage overtime.

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3 years ago
Just by looking at the color of a freshly drawn blood sample, how could you distinguish between blood that is well oxygenated an
Wittaler [7]

Answer:

Explanation:

There are two types of blood that flows through our bodies: oxygenated and deoxygenated. Oxygenated blood is the one that is pumped in the left side of the atrium in the heart. As its name tells us, is the one that is highly with oxygen and low in carbon dioxide. Normally a sample of an oxygenated blood will be very bright in red due to the amount of blood cells in it. Deoxygenated blood is the one that is pumped in the right side of the atrium in the heart. This blood is the one that is low in oxygen and high in carbon dioxide. It is also known as the venous blood. Normally a sample of a deoxygenated blood will be darker almost going on blue.

6 0
3 years ago
Science provides only a
melomori [17]

Science provides only a limited understanding of the supernatural, or other ways of knowing, such as art, philosophy, or religion is a true statement.

<h3>Why science provide limited information about supernatural?</h3>

Science provides only a limited understanding about supernatural, aesthetic, or other ways of knowing, such as art, philosophy, or religion because they are not proved by the science through experiments. These things are beyond from explaining them. Science can't explain the happening of supernatural phenomenon. Science does not create moral or ethical rules, laws, or judgements. Science deals with only things that can be observed or measured so that's why science is not understanding supernatural things.

So we can conclude that Science provides only a limited understanding of the supernatural, or other ways of knowing, such as art, philosophy, or religion is a true statement.

Learn more about science here: brainly.com/question/17216882

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3 0
2 years ago
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4 0
3 years ago
Write a sentence explaining the connection between each pair of words carbohydrate, mitochondria
Rashid [163]

Answer:

Carbohydrate and mitochondria are closely connected with each because carbohydrate is a food substance from which energy is extracted by the mitochondria of the cell. Mitochondria is called the power house of the cell. Its main function is to make energy for the cell which used this energy to perform various function by using food material such as carbohydrate. So we can say that both are connected with each other.

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4 years ago
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