Question 4 (0.75 points) Low blood pressure or blood volume, such as that caused by dehydration or blood loss, creates a cascade of events involving the following molecules (in order): renin - ADH - aldosterone - cortisol renin - angiotensinogen - angiotensin - aldosterone oxytocin - adrenaline - testosterone - ADH Aldosterone - angiotensinogen - renin ADH Saved

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Question 4 (0.75 points) Low blood pressure or blood volume, such as that caused by dehydration or blood loss, creates a cascade of events involving the following molecules (in order): renin - ADH - aldosterone - cortisol renin - angiotensinogen - angiotensin - aldosterone oxytocin - adrenaline - testosterone - ADH Aldosterone - angiotensinogen - renin ADH Saved

Answer 1

The correct cascade is **renin - angiotensinogen - angiotensin - aldosterone**.Here's why:* **Renin:** Released by the kidneys in response to low blood pressure or low blood volume.* **Angiotensinogen:** A protein produced by the liver, renin converts it to angiotensin I.* **Angiotensin I:** Converted to angiotensin II by an enzyme primarily found in the lungs.* **Angiotensin II:** A powerful vasoconstrictor (narrows blood vessels, increasing blood pressure). It also stimulates the release of aldosterone.* **Aldosterone:** A hormone released by the adrenal glands. It causes the kidneys to retain sodium and water, which increases blood volume and further raises blood pressure.The other options are incorrect because they include hormones not directly involved in this specific blood pressure regulation pathway or list them in the wrong order. Cortisol, while a stress hormone that can impact blood pressure, isn't a direct part of this renin-angiotensin-aldosterone system (RAAS). Oxytocin, adrenaline, and testosterone are also not key players in this specific response to low blood pressure/volume.

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