Multiple choice

Elevation of BP would most likely to be caused by

  1. rennin

  2. renin

  3. urea

  4. ketone bodies
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Renin is an enzyme secreted by the juxtaglomerular cells of the kidney in response to low blood pressure. It converts angiotensinogen to angiotensin I, initiating the renin-angiotensin-aldosterone system (RAAS). This cascade ultimately increases blood pressure through angiotensin II (vasoconstriction) and aldosterone (sodium retention). Option A says 'rennin' (with extra 'n') which is a different enzyme involved in milk digestion in infants.

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