Question

A decrease in blood pressure/volume will not cause the release of
A. ADH
B. Renin
C. Atrial natriuretic factor
D. Aldosterone

Answer 1

Hint: Blood pressure is the force of blood pushing against the walls of the arteries, when the heart beats; it pumps blood into the arteries. When the heart beats, the blood pressure is high known as systolic pressure and when the heart is at rest, the blood pressure decreases known as diastolic pressure.

Complete answer:
> ADH: Antidiuretic hormone affects the kidney function by its constrictory effect on the blood vessels and this causes an increase in the blood pressure. ADH released by the neurohypophysis present in the hypothalamus.
> Renin: Renin is released by the juxtaglomerular cells which convert angiotensin present in the blood to angiotensin 1 and further to angiotensin 2. Angiotensin 2 increases glomerular blood pressure by constriction of arterioles which results in the increases of blood pressure.
> Aldosterone: Aldosterone is a steroid hormone which regulates the sodium and potassium level in blood. It is a part of the Renin-angiotensin-aldosterone system (RAAS). An increase in the levels of aldosterone can cause high blood pressure.
> Atrial Natriuretic factor: The Atrial walls of our heart secrets an important peptide hormone called Atrial natriuretic factor. It causes vasodilation and decreases the blood pressure. ANF decreases the water and sodium concentration in the circulatory system.
When the blood pressure/volume decreases ANF hormone is not released.

So the correct answer is option C.

Note: Photorespiration is not related to aerobic respiration as aerobic respiration occurs throughout the day but photorespiration occurs in presence of light in green cells.