Consider the functions of male androgens (specifically testosterone):
I. Leydig cells produce a group of hormones called androgens, mainly progesterone. II. Androgens regulate the development, maturation, and functions of the male accessory sex organs like epididymis, vas deferens, and seminal vesicles. III. These hormones stimulate muscular growth, growth of facial and axillary hair, aggressiveness, and low pitch of voice. IV. Androgens play a major stimulatory role in the process of spermatogenesis.
Identify the correct statements.
Statement I is incorrect because Leydig cells mainly secrete testosterone, an androgen, and not progesterone. Statements II, III and IV are correct.
Question 32 of 100
📘 CLASS XI
Read the statements below regarding androgen-induced metabolic and behavioral effects:
I. Androgens act on the central neural system and influence male sexual behavior (libido). II. Androgens produce catabolic (destructive) effects on protein and carbohydrate metabolism. III. Androgens stimulate erythropoiesis (RBC production) in males. IV. Testosterone belongs to the peptide hormone group.
Identify the combination of correct statements.
Statements I and III are correct. Statement II is incorrect because androgens produce anabolic effects on protein and carbohydrate metabolism. Statement IV is incorrect because testosterone is a steroid hormone, not a peptide hormone.
Question 33 of 100
📘 CLASS XI
Consider the following statements about ovaries and female sex hormones:
I. Females have a pair of ovaries located in the abdomen. II. Ovary is the primary female sex organ which produces one ovum during each menstrual cycle. III. Ovary produces two groups of steroid hormones called estrogen and progesterone. IV. The estrogen is synthesized and secreted mainly by the degenerated corpus luteum.
Which of the statements given above are correct?
Estrogen is synthesized and secreted mainly by the growing ovarian follicles, not by the degenerated corpus luteum. After ovulation, the ruptured follicle forms the corpus luteum, which primarily secretes progesterone.
Question 34 of 100
📘 CLASS XI
Read the statements below regarding progesterone and its actions:
I. After ovulation, the ruptured follicle converts to a structure called corpus luteum, which secretes mainly progesterone. II. Progesterone is essential for the maintenance of pregnancy. III. Progesterone acts on the mammary glands and stimulates the formation of alveoli and milk secretion. IV. Progesterone is synthesized by the growing follicles before ovulation.
Select the correct statement combination.
Statements I, II and III are correct. Statement IV is incorrect because progesterone is secreted mainly by the corpus luteum after ovulation, whereas growing follicles primarily secrete estrogen.
Question 35 of 100
📘 CLASS XI
Read the following statements regarding the physiological actions of estrogens:
I. Estrogens stimulate the growth and activities of female secondary sex organs. II. Estrogens are responsible for the appearance of female secondary sex characters like high pitch of voice. III. Estrogens regulate female sexual behavior. IV. Estrogens stimulate the formation of mammary alveoli and maintain pregnancy.
Which of the statements given above are correct?
Statements I, II and III are correct. Statement IV is incorrect because progesterone, not estrogen, stimulates mammary alveolar development and is essential for maintenance of pregnancy.
Question 36 of 100
📘 CLASS XI
Consider the statements regarding atrial natriuretic factor (ANF):
I. The atrial wall of our heart secretes a very important steroid hormone called atrial natriuretic factor (ANF). II. ANF increases blood pressure to maintain glomerular filtration. III. When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels. IV. Vasodilation by ANF reduces the blood pressure.
Which of the statements given above are correct?
ANF is a peptide hormone, not a steroid hormone. It is secreted when blood pressure rises and causes vasodilation, thereby lowering blood pressure. Hence statements III and IV are correct.
Question 37 of 100
📘 CLASS XI
Read the statements regarding hormonal secretions of the kidney:
I. The juxtaglomerular (JG) cells of the kidney produce a peptide hormone called erythropoietin. II. Erythropoietin stimulates erythropoiesis, which is the formation of RBCs. III. Erythropoietin is a steroid hormone synthesized by the renal cortex. IV. The kidneys also produce growth factors that are the sole source of tissue regeneration.
Choose the correct statement(s).
Erythropoietin is a peptide hormone, not a steroid hormone. Growth factors are produced by several tissues and are not exclusively secreted by the kidneys. Therefore, only statements I and II are correct.
Question 38 of 100
📘 CLASS XI
Consider the statements regarding gastrointestinal (GIT) hormones:
I. Endocrine cells present in different parts of the gastro-intestinal tract secrete four major peptide hormones. II. These hormones are gastrin, secretin, cholecystokinin (CCK), and gastric inhibitory peptide (GIP). III. All gastrointestinal hormones are steroid derivatives. IV. These hormone-secreting endocrine cells are organized into distinct glands in the submucosa of the stomach.
Which of the statements given above are correct?
Statements I and II are correct. Gastrointestinal hormones are peptide hormones, not steroid derivatives. Their endocrine cells are diffusely distributed throughout the gastrointestinal tract rather than organized into distinct glands.
Question 39 of 100
📘 CLASS XI
Read the statements regarding Gastrin and Gastric Inhibitory Peptide (GIP):
I. Gastrin acts on the gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen. II. Gastrin inhibits gastric secretion and motility. III. Gastric inhibitory peptide (GIP) stimulates gastric secretion and motility. IV. GIP inhibits gastric secretion and motility.
Identify the correct statement combination.
Gastrin stimulates gastric glands to secrete hydrochloric acid (HCl) and pepsinogen. Gastric inhibitory peptide (GIP) inhibits gastric secretion and motility. Hence, statements I and IV are correct.
Question 40 of 100
📘 CLASS XI
Analyze the physiological roles of Secretin and Cholecystokinin (CCK):
I. Secretin acts on the exocrine pancreas and stimulates the secretion of water and bicarbonate ions. II. CCK acts on both the pancreas and the gall bladder. III. CCK stimulates the secretion of pancreatic enzymes and bile juice, respectively. IV. Secretin stimulates the secretion of pancreatic enzymes and bile juice, while CCK stimulates bicarbonate secretion.
Which of the statements given above are correct?
Secretin stimulates secretion of water and bicarbonate ions from the exocrine pancreas. CCK stimulates secretion of pancreatic enzymes and bile juice. Statement IV incorrectly reverses these physiological roles.
