Question

Blood pressure is controlled by
A. Adrenal gland
B. Thyroid gland
C. Pituitary gland
D. None of the above

Answer 1

Hint: Blood pressure is defined as the force by which blood pushes the walls of the arteries. Blood pressure is the highest when the heart beats, pumping the blood.

Complete Answer:
Pressure can be systolic and diastolic. When the heart beats the highest pressure recorded is called systolic blood pressure and when the heart is at rest, blood pressure falls and this is called diastolic blood pressure.
Let us analyze the options to find out the correct options.
Option A: Adrenal gland is also termed as suprarenal glands. It is an endocrine organ which produces a variety of organs. The zona glomerulosa of the adrenal gland produces mineralocorticoid hormone called aldosterone which helps in maintaining the blood pressure. Therefore, this is the correct option.

Option B: Thyroid gland is an endocrine gland which releases thyroxine hormone. It does not regulate blood pressure. Therefore, this is the incorrect option.

Option C: Pituitary gland is an endocrine gland which releases the hormones responsible for growth, stress, lactation and reproduction. It is the main endocrine organ of the body. Therefore, this is the incorrect option.

Thus, the correct option is A) Adrenal gland.

Note: $\dfrac{120}{80}$ mm is the normal blood pressure condition in which 120 represents systolic and 80 represents diastolic blood pressure. Aldosterone plays a key role in regulating of body homeostasis