Chemical Coordination and Integration Chapter-Wise Test 18

Correct answer Carries: 4.

Wrong Answer Carries: -1.

What is the function of the parathyroid hormone (PTH)?

Increases blood calcium levels
Decreases blood calcium levels
Regulates sodium levels
Stimulates insulin secretion
1

PTH increases blood calcium levels by stimulating bone resorption and calcium absorption in the intestines.

Which hormone is responsible for maintaining water balance by reducing urine output?

Aldosterone
Oxytocin
Vasopressin
Calcitonin
3

Vasopressin (ADH) promotes water reabsorption in the kidneys, reducing urine output.

Which endocrine gland is associated with immune function and declines in size with age?

Thymus
Thyroid
Adrenal gland
Pineal gland
1

The thymus gland produces thymosins, which play a role in immune system development and shrinks with age.

Which hormone stimulates ovulation in females?

FSH
LH
Estrogen
Progesterone
2

Luteinizing hormone (LH) stimulates ovulation by triggering the release of the mature egg from the ovary.

Which hormone is secreted in response to dehydration and helps retain water in the body?

Aldosterone
ADH (Vasopressin)
Insulin
Glucagon
2

ADH (Vasopressin), secreted by the posterior pituitary, promotes water reabsorption in the kidneys to prevent dehydration.

Which hormone is secreted by the hypothalamus and stimulates the release of TSH from the pituitary?

Corticotropin-releasing hormone (CRH)
Gonadotropin-releasing hormone (GnRH)
Thyrotropin-releasing hormone (TRH)
Growth hormone-releasing hormone (GHRH)
3

Thyrotropin-releasing hormone (TRH) from the hypothalamus stimulates the anterior pituitary to release thyroid-stimulating hormone (TSH).

Which hormone primarily regulates the metabolic rate of the body?

Cortisol
Thyroxine (T4)
Insulin
Aldosterone
2

Thyroxine (T4) is a major hormone secreted by the thyroid gland that regulates metabolism in the body.

Which hormone is responsible for the development of male secondary sexual characteristics?

Progesterone
Estrogen
Testosterone
Oxytocin
3

Testosterone, secreted by the testes, promotes the development of male secondary sexual characteristics.

Which hormone is secreted by the adrenal cortex and helps in coping with stress?

Aldosterone
Cortisol
Adrenaline
Glucagon
2

Cortisol, secreted by the adrenal cortex, is a stress hormone that helps in metabolism and immune response regulation.

Which hormone is known as the "hunger hormone"?

Leptin
Ghrelin
Insulin
Glucagon
2

Ghrelin, secreted by the stomach, stimulates hunger and increases food intake.

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