Questions: Which of the following stimulates Na+ reabsorption in the kidney? Renin Angiotensin I Angiotensin II Aldosterone

Which of the following stimulates Na+ reabsorption in the kidney? Renin Angiotensin I Angiotensin II Aldosterone
Transcript text: Which of the following stimulates $\mathrm{Na}^{+}$ reabsorption in the kidney? Renin Angiotensin I Angiotensin II Aldosterone
failed

Solution

failed
failed

The answer is: Aldosterone.

Explanation for each option:

  1. Renin: Renin is an enzyme secreted by the kidneys that plays a crucial role in the renin-angiotensin-aldosterone system (RAAS). It initiates the conversion of angiotensinogen to angiotensin I, but it does not directly stimulate sodium reabsorption.

  2. Angiotensin I: This is a precursor molecule that is converted to angiotensin II by the enzyme angiotensin-converting enzyme (ACE). Angiotensin I itself does not directly stimulate sodium reabsorption.

  3. Angiotensin II: This peptide hormone does stimulate sodium reabsorption indirectly by promoting the release of aldosterone and by causing vasoconstriction, which increases blood pressure. However, it is not the primary hormone responsible for directly stimulating sodium reabsorption in the kidney.

  4. Aldosterone: This is a steroid hormone produced by the adrenal cortex. It directly stimulates sodium reabsorption in the distal tubules and collecting ducts of the nephron in the kidney. It increases the expression of sodium channels and sodium-potassium pumps, leading to increased sodium reabsorption and potassium excretion.

In summary, while angiotensin II plays a role in the process, aldosterone is the hormone that directly stimulates sodium reabsorption in the kidney.

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
The graph of the feasible region is shown. f=8x+7y Find the corners of the feasible region. (Order your answers from smallest to largest x, then from smallest to largest y.) (x, y)= (x, y)= (x, y)= (x, y)= (x, y)= Find the maximum and minimum of the given objective function (if they exist). (If an answer does not exist, enter DNE.) maximum f= minimum f=
failedAnswered
Janelle Heinke, the owner of Ha'Peppas!, is considering a new oven in which to bake the firm's signature dish, vegetarian pizza. Oven type A can handle 22 pizzas an hour. The fixed costs associated with oven A are 22,500 and the variable costs are 2.50 per pizza. Oven B is larger and can handle 44 pizzas an hour. The fixed costs associated with oven B are 30,000 and the variable costs are 1.00 per pizza. The pizzas sell for 12.00 each. a) The break-even point in units for oven type A= units (round your response to the nearest whole number).
failedAnswered
The dominate theme for the modern American Dream is a fetish for obtaining and hoarding money. True False
failedAnswered
Find the amount of the following ordinary annuities rounded to the nearest cent. Find the total interest earned. Amount of each deposit Deposited Rate Time (Years) Amount of an Annuity Interest Earned ------------------ 700 semiannually 12% 12 Click the icon to view the Amount of an Annuity Table. The amount of the annuity is approximately (Round to the nearest cent as needed.)
failedAnswered
Classify each chemical reaction: Reaction Type 2 NaClO3(s) → 2 NaCl(s) + 3 O2(g) choose one Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s) choose one 2 Li(s) + 2 HCl(aq) → 2 LiCl(aq) + H2(g) choose one