Phys conc 5
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Questions and Answers

What is the primary role of antidiuretic hormone (ADH) in fluid homeostasis?

  • To increase the amount of water lost in urine
  • To increase blood osmolarity
  • To decrease blood osmolarity
  • To decrease the amount of water lost in urine (correct)

Where are the osmoreceptors that detect changes in blood osmolarity located?

  • In the hypothalamus (correct)
  • In the cardiovascular system
  • In the anterior pituitary
  • In the kidneys

What is the primary function of the negative feedback loop between thyroid hormone and the hypothalamus and anterior pituitary?

  • To regulate growth and development
  • To decrease the production of thyroid hormone
  • To increase the production of thyroid hormone
  • To maintain a constant level of thyroid hormone (correct)

What is the primary role of the hypothalamus in regulating thyroid hormone release?

<p>It responds to cardiovascular and metabolic parameters (B)</p> Signup and view all the answers

What is the main purpose of the negative feedback loop between TSH and the hypothalamus?

<p>To maintain a constant level of TSH (A)</p> Signup and view all the answers

How does the hypothalamus regulate the release of thyroid hormone?

<p>By secreting thyroid-stimulating hormone (TSH) (C)</p> Signup and view all the answers

What is the primary function of the negative feedback loop between thyroid hormone and the anterior pituitary?

<p>To decrease TSH production (B)</p> Signup and view all the answers

How does the hypothalamus facilitate the growth of the organism through the regulation of thyroid hormone?

<p>By secreting TSH in a particular rhythm (B)</p> Signup and view all the answers

What is the primary role of the negative feedback loop between thyroid hormone and the hypothalamus?

<p>To maintain a constant level of thyroid hormone (D)</p> Signup and view all the answers

How does the anterior pituitary gland regulate the release of thyroid hormone?

<p>By secreting thyroid-stimulating hormone (TSH) (C)</p> Signup and view all the answers

What happens to the tension in the heart as the radius of the ventricle increases?

<p>It increases (A)</p> Signup and view all the answers

How does dilated cardiomyopathy affect the diameter of the heart?

<p>It increases (B)</p> Signup and view all the answers

What is the consequence of hypoventilation according to the text?

<p>Increase in arterial carbon dioxide levels (A)</p> Signup and view all the answers

How does the heart compensate for increased wall tension during contraction?

<p>By increasing energy consumption (C)</p> Signup and view all the answers

What is the relationship between blood flow and CO2 levels in the lungs?

<p>Directly proportional (C)</p> Signup and view all the answers

What is the impact of a decrease in the radius of the ventricle on heart tension?

<p>Tension decreases (B)</p> Signup and view all the answers

What is the effect of genetic factors on dilated cardiomyopathy?

<p>They lead to an increase in heart diameter (D)</p> Signup and view all the answers

In what scenario would arterial carbon dioxide levels rise?

<p>[CO2art] = 2.2 L/min X 91 mm Hg (D)</p> Signup and view all the answers

What is a possible consequence of toxins on dilated cardiomyopathy?

<p>Increase in heart diameter (B)</p> Signup and view all the answers

What is the main issue when the heart has to counteract wall tension during contraction?

<p>Increased energy demand (D)</p> Signup and view all the answers

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