Chemical Coordination and Integration Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which hormone maintains calcium homeostasis by increasing calcium absorption in the intestines?

Thyroxine
Calcitonin
Parathyroid Hormone (PTH)
Aldosterone
3

PTH increases calcium levels in the blood by stimulating calcium absorption from the intestines and bones.

Which hormone plays a key role in female reproductive functions and pregnancy maintenance?

Testosterone
Progesterone
Insulin
Glucagon
2

Progesterone, secreted by the corpus luteum and placenta, is essential for maintaining pregnancy.

Which of the following statements about insulin is incorrect?

Insulin is secreted by beta cells of the pancreas.
Insulin increases blood glucose levels.
Insulin promotes glucose uptake by cells.
Insulin deficiency leads to diabetes mellitus.
2

Insulin lowers blood glucose levels by promoting glucose uptake by body cells.

Which of the following statements about thyroxine (T4) is incorrect?

Thyroxine regulates the basal metabolic rate.
Thyroxine is secreted by the pituitary gland.
Thyroxine influences protein, fat, and carbohydrate metabolism.
Thyroxine requires iodine for its synthesis.
2

Thyroxine is secreted by the thyroid gland, not the pituitary gland.

Which of the following statements about glucagon is correct?

Glucagon lowers blood glucose levels.
Glucagon is secreted by beta cells of the pancreas.
Glucagon promotes glycogen breakdown in the liver.
Glucagon and insulin have the same function.
3

Glucagon, secreted by alpha cells of the pancreas, increases blood glucose levels by promoting glycogen breakdown in the liver.

Which hormone is primarily responsible for regulating basal metabolic rate (BMR)?

Cortisol
Thyroxine
Insulin
Aldosterone
2

Thyroxine (T4) is secreted by the thyroid gland and regulates the body's basal metabolic rate (BMR).

Which of the following hormones is secreted by the adrenal cortex?

Epinephrine
Cortisol
Insulin
Glucagon
2

Cortisol is secreted by the adrenal cortex and helps regulate metabolism and the stress response.

Which hormone deficiency leads to excessive urination and dehydration?

Aldosterone
Insulin
Vasopressin
Cortisol
3

A deficiency of vasopressin (ADH) leads to diabetes insipidus, causing excessive urination and dehydration.

Which hormone is secreted by the hypothalamus to regulate the secretion of gonadotropins?

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

GnRH, secreted by the hypothalamus, regulates the release of LH and FSH from the anterior pituitary.

Which of the following statements about the thyroid gland is incorrect?

The thyroid gland secretes thyroxine and triiodothyronine.
Thyroid hormones regulate metabolism.
The thyroid gland is located in the abdominal cavity.
Iodine is essential for thyroid hormone synthesis.
3

The thyroid gland is located in the neck, not in the abdominal cavity.

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