Chemical Coordination and Integration Chapter-Wise Test 20

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which hormone plays a crucial role in the process of spermatogenesis?

LH
FSH
Testosterone
Both FSH and Testosterone
4

FSH stimulates sperm production, while testosterone maintains the process of spermatogenesis.

Which hormone secreted by the pancreas lowers blood glucose levels?

Glucagon
Insulin
Somatostatin
Cortisol
2

Insulin, secreted by the beta cells of the pancreas, lowers blood glucose levels by promoting glucose uptake by cells.

What is the primary function of glucagon?

Increase blood glucose levels
Decrease blood glucose levels
Regulate calcium metabolism
Increase sodium absorption
1

Glucagon, secreted by pancreatic α-cells, increases blood glucose levels by stimulating glycogen breakdown in the liver.

What is the function of atrial natriuretic factor (ANF) secreted by the heart?

Increases blood pressure
Decreases blood pressure
Regulates blood glucose
Stimulates erythropoiesis
2

ANF is a peptide hormone that causes vasodilation and reduces blood pressure by promoting sodium excretion.

Which of the following hormones increases blood calcium levels?

Calcitonin
Parathyroid hormone (PTH)
Insulin
Glucagon
2

PTH, secreted by the parathyroid glands, increases blood calcium levels by stimulating bone resorption.

Which of the following statements about thyroxine is correct?

Thyroxine is secreted by the parathyroid gland.
Thyroxine requires iodine for its synthesis.
Thyroxine lowers metabolic rate.
Thyroxine is a steroid hormone.
2

Thyroxine (T4) is secreted by the thyroid gland and requires iodine for its synthesis.

Which hormone inhibits gastric secretion and motility in the digestive system?

Gastrin
Secretin
Gastric inhibitory peptide (GIP)
Cholecystokinin (CCK)
3

GIP inhibits gastric secretion and motility to slow down digestion.

Which of the following statements about melatonin is incorrect?

Melatonin is secreted by the pineal gland.
Melatonin regulates the sleep-wake cycle.
Melatonin secretion increases during the day.
Melatonin helps regulate biological rhythms.
3

Melatonin secretion increases at night and decreases during the day.

Which hormone helps regulate blood glucose levels by promoting glycogen breakdown?

Insulin
Glucagon
Cortisol
Aldosterone
2

Glucagon, secreted by the pancreas, promotes glycogen breakdown to release glucose into the bloodstream.

Which hormone is secreted by the corpus luteum and helps in maintaining pregnancy?

Estrogen
Progesterone
Oxytocin
FSH
2

Progesterone is secreted by the corpus luteum and is essential for maintaining the uterine lining during pregnancy.

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