A decrease in arterial blood pressure stimulates the kidneys to produce:Question 43Select one:a.ADHb.angiotensin IIc.aldosteroned.angiotensin Ie.renin
Question
A decrease in arterial blood pressure stimulates the kidneys to produce:Question 43Select one:a.ADHb.angiotensin IIc.aldosteroned.angiotensin Ie.renin
Solution
To answer the question, let's break down the process step by step:
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Understanding the context: The question is about the physiological response to a decrease in arterial blood pressure and how the kidneys react to this change.
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Key terms:
- ADH (Antidiuretic Hormone): A hormone that helps the kidneys manage the amount of water in the body.
- Angiotensin II: A peptide hormone that causes blood vessels to constrict, resulting in increased blood pressure.
- Aldosterone: A hormone that increases the reabsorption of sodium and water in the kidneys, which increases blood volume and pressure.
- Angiotensin I: A precursor to angiotensin II, converted by the enzyme ACE (Angiotensin-Converting Enzyme).
- Renin: An enzyme secreted by the kidneys that starts the process leading to the production of angiotensin II.
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Physiological response to decreased blood pressure:
- When arterial blood pressure drops, the kidneys detect this change.
- In response, the kidneys release renin.
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Role of renin:
- Renin is the initial enzyme in the renin-angiotensin-aldosterone system (RAAS).
- It converts angiotensinogen (produced by the liver) into angiotensin I.
- Angiotensin I is then converted to angiotensin II by ACE.
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Conclusion:
- The initial response of the kidneys to a decrease in arterial blood pressure is the production of renin.
Therefore, the correct answer is:
e. renin
Similar Questions
Renin, released from the kidney as a result of a decrease in blood pressure, acts on ________ produced in the liver. This triggers a series of reactions that culminate in the production of _______ in the adrenal glands.Multiple Choiceangiotensin II; reninaldosterone; angiotensinangiotensinogen; aldosteroneantidiuretic hormone; osmosis
How does angiotensin II cause an increase in blood pressure?Multiple ChoiceBy inhibiting the release of aldosteroneBy stimulating the release of reninBy increasing peripheral resistanceBy promoting the excretion of sodium
The kidneys play an important role regulating blood pressure via the renin angiotensin aldosterone system. Briefly, explain the purpose of this system (2 marks) and the process by which this pathway ultimately produces aldosterone
which of the following decreases blood pressure. a drug that:a) causes vasoconstrictionb) increases degradation of bradykininc) promotes aldosterone productiond) inhibits conversion of angiotensin I to II2 / 2
The normal human physiological response to a DECREASE in blood pressure and volumeincludes which of the following?A. A decrease in arteriole pressure in the juxtagolmerular apparatus results in a decrease in theenzyme rennin.B. An increase in angiotensin II that constricts arterioles and decreases blood flow to the capillaries.C. Aldosterone is released from the kidneys and increases distal tubule reabsorption of sodium.D. Antidiuretic hormone is decreased with the decrease in the blood volume.E. An increase in atrial natriuretic factor from the walls of the atria increases the release of theenzyme rennin
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