1. Glomerular filtration pressure (GFP) is inversely related to glomerular filtr

Question

1. Glomerular filtration pressure (GFP) is inversely related to glomerular filtration rate (GFR).

2. GFR is held constant unless MAP is too low or too high.

3. The bulk of reabsorption takes place in the distal convoluted tubule

4. When systemic blood pressure (BP) rises, the vascular smooth muscle of the afferent arteriole in the kidneys constricts in response to being stretched. What is this called and what type of regulation is it? a. auto regulation, intrinsic regulation b. myogenic mechanism, extrinsic regulation c. auto regulation, myogenic mechanism d. tubuloglomerular feedback, intrinsic regulation e. myogenic mechanism, intrinsic regulation

5. In response to a decrease in mean arterial pressure (MAP), the kidneys will (select all that apply) a. Signal the SA node to increase its rate of action potentials in order to increase Heart Rate. b. Signal the heart to contract with more force in order to increase Stroke Volume. c. Conserve fluid in order to increase/maintain End Diastolic Volume and thus Stroke Volume d. Release hormones that directly activates the sympathetic nervous system e. Signal systemic vasoconstriction in order in increase Total Peripheral Resistance

6. Which of the following is not an example of extrinsic regulation of the nephron? a. sympathetic activation of granular cells b. sympathetic activation of afferent arteriolar smooth muscle c. renin release by granular cells stimulated by norepinephrine d. tubuloglomerular feedback e. Angiotensin II stimulation of aldosterone release

7. Macula Densa cells are a type of: a. Baroreceptor b. Chemoreceptor c. Volumereceptor d. Adrenoreceptor e. Tubuloreceptor

8. A decrease in mean arterial pressure stimulates which of the following? (select all that apply) a. ADH release b. Renin release c. Increased H2O excretion d. Aldosterone release e. Increased sodium excretion

9. Which of the following is NOT a factor that affects reabsorption in the nephron? a. concentration gradients b. electrochemical gradient c. osmotic gradient d. permeability of the membrane to molecules e. All of these contribute to movement during reabsorption

10. If the excretion rate for a given molecule is less than the filtration rate, what does that mean about its relative reabsorption? a. the bulk of the molecule was reabsorbed b. the bulk of the molecule was secreted c. the bulk of the molecule was excreted d. the molecule was neither reabsorbed or excreted e. the bulk of the molecule was filtered

11. In the distal convoluted tubule the reabsorption and secretion of solutes is highly regulated. Which one of these hormones can directly inhibit sodium reabsorption? a. Aldosterone b. Atrial natriuretic peptide (ANP) c. Antidiuretic Hormone (ADH) d. Vasopressin e. Non of the above.

12      Which of the following is a response to Angiotensin II? (select all that apply)a.      Systemic vasodilationb.      Thirst Stimulationc.       Decreased ADH released.      Increased Aldosterone secretione.      Production of a larger volume of more diluted urine

Explanation / Answer

Answer 1] Glomerular filtration pressure (GFP) is inversely related to glomerular filtration rate (GFR)

False

glomerular filtration rate (GFR) is a measure that describes the total amount of filterate formed by all the renal carpuscles in both kidneys per minute

The glomerular filteration rate is directly proportional to the pressure gradient in the glomerulus so changes in pressure will change GFR

glomerular filteration pressure is the pressure exerted by fluid on the capillary walls on the glomerulus or the walls of the bowmanns capsule

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