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anzhelika [568]
2 years ago
14

Why do arteries need to be thick, muscular, and elastic?

Biology
2 answers:
UkoKoshka [18]2 years ago
8 0

ANSWER:

The correct answer would be "to withstand the pressure of the blood that is being pumped by the heart".

Arteries are the type of blood vessels which carry blood away from the heart to rest of the body.

Thus, the blood which enters the arteries usually has high pressure due to the pumping of the heart.

To withstand and absorb this pressure, arteries usually have thick layers of muscular and elastic fibers in their structure as compared to the veins.

The wall of the arteries swells and expand due to the force generated with each contraction of the heart and then the arteries contract back which helps in pushing the blood forward.

Rasek [7]2 years ago
8 0
Arteries have much thicker walls than other blood vessels in order to withstand the higher blood pressure that propels oxygenated blood away from the heart. 
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After suffering a head injury, doctors discover that your
VikaD [51]

Answer:

1. You will be unable to smell

3. Your olfactory receptor cells will no longer be able to respond  to molecules trapped in the mucus.

Explanation:

The Olfactory receptors are the receptors present in the olfactory neurons which detect different odorants or smell.

The olfactory receptors are embedded in the epithelium or mucous lining of the nose in which one extension of the cell body reaches the epithelium surface and branches into cilia like structures which sense the odour.

If the axons of the olfactory cells are broken then the cells will not be able to respond to the molecules trapped in the mucus and thus no detection of odour. The signal will not be generated in response and thus will not be sent to the brain. Thus, the person will not be able to smell.

Thus, Options-1 and 3 are correct.

5 0
3 years ago
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alexdok [17]

Answer:

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3 0
3 years ago
Which layer of the epidermis has a high mitotic rate
TEA [102]
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7 0
3 years ago
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Which process does not occur in the Krebs cycle?
nikdorinn [45]

Answer:

The correct answer is b glucose is broken down into two pyruvate molecules.

Explanation:

Krebs cycle is one of the most important step of aerobic respiraion.Krebs cycle occur within mitochondrial matrix.During krebs cycle the acetyl CoA generated from pyruvate reacts with oxalo acetate in a cyclic manner to regenerate 4 carbon compound oxaloacetate.

 During krebs cycle pyruvate is broken down or oxidized to form 2 carbon compound known as acetyl CoA and carbon dioxide as byproduct.

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7 0
3 years ago
3
Volgvan

Answer: :Total distance to be travelled = 4.4 km

= 4400 m

Diameter of wheel = 70 cm = 0.7 m

Radius of wheel= 0.7 / 2 m

Circumference of wheel = 2 * pi *r

= 2* 22*0.7 / 7* 2

= 22*0.1

= 2.2 m

No. Of revolutions = Total distance / Circumference of wheel

= 4400 / 2.2

= 2000

Explanation:

3 0
2 years ago
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