Chemical Coordination and Integration Chapter-Wise Test 17

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which hormone is responsible for the regulation of blood pressure by promoting sodium excretion?

Aldosterone
Vasopressin
Atrial natriuretic factor (ANF)
Renin
3

ANF, secreted by the heart, lowers blood pressure by promoting sodium excretion and vasodilation.

Which hormone is responsible for stimulating red blood cell production?

Renin
Erythropoietin
Thyroxine
Prolactin
2

Erythropoietin, secreted by the kidneys, stimulates bone marrow to produce red blood cells.

Which of the following statements about oxytocin is correct?

Oxytocin is secreted by the anterior pituitary.
Oxytocin stimulates uterine contractions during childbirth.
Oxytocin reduces milk production in lactating mothers.
Oxytocin secretion is inhibited during labor.
2

Oxytocin, secreted by the posterior pituitary, stimulates uterine contractions during childbirth and milk ejection during lactation.

Which hormone, secreted by the posterior pituitary, plays a role in kidney water retention?

Oxytocin
Vasopressin
Aldosterone
Erythropoietin
2

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

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

Cortisol
Aldosterone
Adrenaline
Testosterone
3

Adrenaline (epinephrine) is secreted by the adrenal medulla and prepares the body for the "fight or flight" response.

Which of the following statements about glucagon is incorrect?

Glucagon increases blood glucose levels.
Glucagon promotes glycogen breakdown in the liver.
Glucagon is secreted by beta cells of the pancreas.
Glucagon has an opposite effect to insulin.
3

Glucagon is secreted by the alpha cells of the pancreas, not beta cells.

Which gland secretes melatonin, a hormone involved in regulating sleep cycles?

Pituitary gland
Thyroid gland
Pineal gland
Thymus
3

The pineal gland secretes melatonin, which helps regulate the sleep-wake cycle.

Which hormone secreted by the kidney stimulates red blood cell formation?

Renin
Erythropoietin
Aldosterone
Vasopressin
2

Erythropoietin, secreted by the kidney, stimulates the bone marrow to produce red blood cells.

Which of the following is an incorrect statement about growth hormone (GH)?

GH is secreted by the anterior pituitary.
GH promotes cell growth and protein synthesis.
GH deficiency in childhood leads to gigantism.
GH excess in adulthood leads to acromegaly.
3

GH deficiency in childhood leads to dwarfism, not gigantism. GH excess causes gigantism.

Which condition is caused by the deficiency of insulin?

Diabetes mellitus
Goitre
Acromegaly
Dwarfism
1

Insulin deficiency leads to diabetes mellitus, characterized by high blood glucose levels and glucose excretion in urine.

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