Recent Lessons

Show all results for ""

Human Physiology: Kidney Function Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What role does antidiuretic hormone (ADH) play in kidney function?

Decreases the secretion of aldosterone.
Increases renal blood flow permanently.
Facilitates water reabsorption in the nephron tubules. (correct)
Promotes sodium excretion in the urine.

Which component of the regulation of kidney function releases renin in response to low glomerular blood pressure?

Hypothalamus
Juxtaglomerular Apparatus (JGA) (correct)
Atrial Natriuretic Factor (ANF)
Pituitary gland

What effect does angiotensin II have on blood pressure?

It decreases blood pressure through vasodilation.
It increases blood pressure by acting as a vasoconstrictor. (correct)
It has no effect on blood pressure.
It solely increases heart rate.

How does the Atrial Natriuretic Factor (ANF) affect the renin-angiotensin system?

<p>It causes vasodilation and decreases blood pressure. (C)</p> Signup and view all the answers

What initiates the signal for urination in the urinary bladder?

<p>Stretch receptors in the bladder wall. (A)</p> Signup and view all the answers

Flashcards

Osmoreceptors

These receptors are activated by changes in blood volume and ionic concentration. When body fluid is lost, they stimulate the hypothalamus to release ADH, preventing excessive water loss.

Antidiuretic Hormone (ADH)

This hormone promotes water reabsorption from the nephron tubules, preventing diuresis. It also constricts blood vessels.

Juxtaglomerular Apparatus (JGA)

A complex regulatory mechanism located in the kidney. It releases renin in response to low blood pressure, activating the renin-angiotensin system.

Angiotensin II

A potent vasoconstrictor that increases blood pressure and glomerular filtration rate (GFR). It also stimulates the release of aldosterone.

Signup and view all the flashcards

Aldosterone

This hormone, released by the adrenal cortex, increases sodium and water reabsorption in the distal tubules, further raising blood pressure and GFR.