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hram777 [196]
3 years ago
9

Explain how valves help the transport of blood in veins.

Biology
1 answer:
pychu [463]3 years ago
4 0

Answer:

The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back

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Sociologically, "gender" and "sex" are interchangeable terms that have virtually the same meaning true or false
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Answer:      

False.

Explanation:

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2 years ago
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In pea plants, red flowers and round pollen are known to be recessive traits. In a dihybrid cross experiment, lots of plants wit
motikmotik

Answer:

The last one if there are multiple answers please tell me.

Explanation:

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8 0
3 years ago
What statement about the mechanism of hunger and satiety is true?
disa [49]

Answer:

The correct answer is: The ventromedial hypothalamus plays a role in satiety.​

Explanation:

The hypothalamus is a part of the brain that controls many important bodily functions and connects both the nervous system with the endocrine system. The hypothalamus consists of several nuclei that have diverse functions and are located in 3 different regions.

The nucleus that plays a role in satiety is the ventromedial nucleus, terminating hunger and giving a sensation of fullness. It also plays a significant role in thermoregulation, among other things.

Neuropeptide Y, on the other hand, is a peptide that is released to make us feel hungry and encourage us to intake food (primarily carbohydrates).

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Fat cells DO release leptin, but the function of this hormone is to produce satiety, by stimulating anorexigenic (meaning they take hunger away) hormones and inhibiting orexigenic ones, like Neuropeptide Y.

7 0
3 years ago
The mitochondrial inner membrane form a series of infoldings known as cristae to:
REY [17]

Answer: Increase the surface area.

Explanation:

The mitochondria is an important cell organelle that is found in both the plant cell and animal cell.

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It helps in embedding the proteins in the folding known as cristae.

6 0
2 years ago
A human’s knee joint is best described as
vesna_86 [32]

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