Chemical Coordination And Integration Chapter-Wise Test 1

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about vasopressin (ADH) is incorrect?

Vasopressin promotes water reabsorption in the kidneys.
Vasopressin is secreted by the anterior pituitary.
Vasopressin helps maintain blood pressure.
Vasopressin deficiency leads to diabetes insipidus.
2

Vasopressin is secreted by the posterior pituitary, not the anterior pituitary.

Which of the following statements about melatonin is correct?

Melatonin is secreted by the adrenal cortex.
Melatonin regulates the sleep-wake cycle.
Melatonin secretion is highest during the day.
Melatonin secretion is independent of light exposure.
2

Melatonin, secreted by the pineal gland, regulates the sleep-wake cycle and is highest at night.

Which hormone is responsible for the regulation of water balance in the body?

Aldosterone
ADH (Vasopressin)
Cortisol
Glucagon
2

ADH (Vasopressin) helps in water reabsorption in the kidneys, reducing water loss in urine.

Which hormone is responsible for regulating the body's circadian rhythm?

Thyroxine
Cortisol
Melatonin
Testosterone
3

Melatonin, secreted by the pineal gland, regulates the body's sleep-wake cycle and circadian rhythm.

Which hormone is secreted by the placenta and helps maintain pregnancy?

Progesterone
Testosterone
Insulin
Cortisol
1

During pregnancy, the placenta secretes progesterone, which helps maintain the uterine lining and prevent contractions.

Which of the following is an incorrect statement regarding thyroid hormones?

Thyroid hormones regulate metabolism.
Thyroid hormones require iodine for synthesis.
Thyroid hormones are secreted by the adrenal gland.
Thyroid hormones influence protein synthesis.
3

Thyroid hormones are secreted by the thyroid gland, not the adrenal gland.

Which hormone inhibits the secretion of growth hormone (GH)?

GHRH
Somatostatin
Prolactin
Thyroxine
2

Somatostatin, secreted by the hypothalamus, inhibits the release of growth hormone from the pituitary gland.

Which hormone is responsible for stimulating milk production in lactating mothers?

Oxytocin
Prolactin
Estrogen
Progesterone
2

Prolactin, secreted by the anterior pituitary, stimulates milk production in lactating mothers.

Which of the following statements about aldosterone is incorrect?

Aldosterone is secreted by the adrenal cortex.
Aldosterone regulates sodium and potassium balance.
Aldosterone lowers blood pressure by increasing sodium excretion.
Aldosterone helps maintain blood volume and pressure.
3

Aldosterone increases sodium reabsorption, which helps retain water and maintain blood pressure.

Which hormone is known as the "emergency hormone" or "fight or flight" hormone?

Cortisol
Adrenaline
Thyroxine
Insulin
2

Adrenaline, secreted by the adrenal medulla, prepares the body for emergencies by increasing heart rate and blood flow.

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