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pentagon [3]
2 years ago
9

Explain why sickle cell anaemia is a form of discontinuous variation

Biology
1 answer:
Jobisdone [24]2 years ago
3 0

Answer:

Sickle Cell Anaemia can be considered a form of discontinuous variation because the variation falls within definite groups. You either have sickle cell malaria (HsHs) or you do not (HaHa). There is nothing in between and so one cannot draw a continuum (continuous scale) for Sickle cell Anaemia.

Explanation:

Sana makatulong

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Do your genes affect the function of your circulatory system ?
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Sometimes, For example many cardiac disorders can be inherited, including arrhythmias, congenital heart disease, cardiomyopathy, and high blood cholesterol.

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3 0
3 years ago
Which hormone does the sympathetic nervous system release to increase heart rate.
sertanlavr [38]

The sympathetic nervous system releases hormones known as catecholamines which increase the heart rate.

<h3>What is a heart rate? </h3>

it is the number of contractions of the heart per minute.

<h3>What are catecholamines?</h3>

These are the neurotransmitters that have a catechol and a side chain that is an amine.

<h3>Which catecholamines are released by the sympathetic nervous system?</h3>

Epinephrine and norepinephrine are the catecholamines that are released by the sympathetic nervous system to increase the heart rate.

<h3>Where are these hormones released?</h3>

These hormones are released in the blood.

<h3>How does this hormone increase the heart rate?</h3>
  • "These hormones are released at the neuromuscular junction of the cardiac nerves."
  • "They shorten the repolarization period."
  • This speeds up the rate of depolarization and contraction and thus the heart rate is increased.

To learn more about sympathetic nervous system, hormones and heart rate here,

brainly.com/question/1155838

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2 years ago
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Which does the autonomic nervous system most directly control?
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Involuntary action in body
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What can a hypothesis become if it is supported by repeated experimentation?
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C. If your hypothesis is proven then it eventually becomes true. The exact definition for scientific theory is an explanation that can be proved with repeated explanation.
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