Description : In males, secretion of luteinising hormone is inhibited by (A) Gonadotropin releasing hormone (B) FSH (C) High blood level of testosterone (D) Inhibin
Last Answer : Answer : C
Description : All the following statements about FSH are true except (A) It is a tropic hormone secreted by anterior pituitary (B) Its secretion is increased by gonadotropin releasing hormone (C) It acts on Sertoli cells (D) It increases the synthesis of testosterone
Last Answer : Answer : D
Description : GnRH, a hypothalamic hormone, needed in reproduction, acts on (a) anterior pituitary gland and stimulates secretion of LH and FSH (b) posterior pituitary gland and stimulates secretion of oxytocin ... of LH and relaxin (d) anterior pituitary gland and stimulates secretion of LH and oxytocin.
Last Answer : (a) anterior pituitary gland and stimulates secretion of LH and FSH
Description : GnRH, a hypothalamic hormone, needed in reproduction, acts on: (1) anterior pituitary gland and stimulates secretion of LH and FSH. (2) posterior pituitary gland and stimulates secretion of oxytocin and ... of LH and relaxin. (4) anterior pituitary gland and stimulates secretion of LH and oxytocin.
Last Answer : 1) anterior pituitary gland and stimulates secretion of LH and FSH.
Description : Secretion of androgens is increased by (A) LH (B) FSH (C) ACTH (D) Growth hormone
Last Answer : Answer : A
Description : 16.15 The hypothalamic gonadotropin releasing hormone (GnRH) is: A. A single peptide B. A mixture of two distinct peptides FSH-RH and LH-RH C. A mixture of several peptides D. Dopamine
Last Answer : A. A single peptide
Description : In structure and function, HCG resembles (A) FSH (B) LH (C) GnRH (D) Progesterone
Last Answer : Answer : B
Description : Which of the following is a gonadotropic hormone? A) FSH B) ADH C) cortisol D) testosterone E) thyroxin
Last Answer : A) FSH
Description : Assertion : Inhibin is secreted by the corpus luteum. Reason : They inhibit the FSH and GnRH production.
Last Answer : Assertion : Inhibin is secreted by the corpus luteum. Reason : They inhibit the FSH and GnRH ... D. If both Assertion and Reason are false.
Description : What is correct to say about the hormone action in humans? (a) Glucagon is secreted by β-cells of islets of Langerhans and stimulates glycogenolysis. (b) Secretion of thymosins is stimulated ... receptors on ovarian cell membrane. (d) FSH stimulates the secretion of estrogen and progesterone.
Last Answer : (c) In females, FSH first binds with specific receptors on ovarian cell membrane.
Description : Select the option which correctly matches the endocrine gland with its hormone and its function. Endocrine Hormone Function gland (a) Placenta Estrogen Initiates secretion of the milk (b) Corpus ... of sperms (d) Ovary FSH Stimulates follicular development and the secretion of estrogens
Last Answer : (c) Leydig’s Androgen Initiates the cells production of sperms
Description : What is correct to say about the hormone action in humans ? (1) FSH stimulates the secretion of estrogen and progesterone (2) Glucagon is secreted by -cells of Islets of Langerhans and ... stimulated with aging (4) If females, FSH first binds with specific receptors on ovarian cell membrane
Last Answer : (4) If females, FSH first binds with specific receptors on ovarian cell membrane
Description : Which of one of the following is released by hypothalamus? (A) Somatostatin (B) Somatotropic hormone (C) Somato medin C (D) Luteinising hormone
Description : In males, luteinising hormone acts on (A) Leydig cells (B) Sertoli cells (C) Prostate gland (D) All of these
Description : Which one of the following is the correct matching of the events occurring during menstrual cycle? (a) Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle (b) ... ) Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone
Last Answer : (b) Secretory phase : Development of corpus luteum and increased secretion of progesterone
Description : 8.The reason for increased amount of progesterone during the secretory phase of menstrual cycle is ---- ---- . ( a)Maturation of secondary follicle, b)Increased secretion of FSH, c)Regression of corpus luteum, d)Formation of corpus luteum from Graafian follicle )
Last Answer : d)Formation of corpus luteum from Graafian follicle
Description : Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol
Last Answer : (1) Thyroxine Explanation: With its excess secretion, also known as hyper secretion, thyroxin (T4) causes an increased heart rate, high blood pressure, possible palpitations, and could lead to heart failure. It is related to hyperthyroidism.
Description : The effects of stress include: a. increased testosterone secretion b. decreased insulin secretion c. increased prolactin secretion d. increased ADH secretion
Last Answer : . increased ADH secretion
Last Answer : Thyroxine
Description : Antidiuretic hormone (A) Is secreted by hypothalamus (B) Secretion is increased when osmolality of plasma decreases (C) Increases obligatory reabsorption of water (D) Acts on distal convoluted tubules and collecting ducts
Description : Down regulation is (A) Increased destruction of a hormone (B) Feed back inhibition of hormone secretion (C) Decreased concentration of a hormone in blood (D) Decrease in number of receptors for a hormone
Description : Increased reabsorption of water from the kidney is the major consequence of the secretion of the hormone? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone
Description : Write the function of each of the following (i)Middle piece in human sperm (ii)Tapetum in anthers (iii)Luteinising hormone in human males -Biology
Last Answer : (i)Middle piece in human sperm contains several mitochondria which produces energy for the motility of the sperm. (ii) Tapetum in anthers It is the innermost layer of the anther. ... male stimulates the Leydig cells to produce testosterone, necessary to complete the process of spermatogenesis.
Description : The most important component of the oral contraceptive pills is (a) thyroxine (b) luteinising hormone (c) progesterone (d) growth hormone
Last Answer : (c) progesterone
Description : The mammalian corpus luteum produces (a) luteotrophic hormone (b) luteinising hormone (c) estrogen (d) progesterone.
Last Answer : (d) progesterone.
Description : Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency? (a) Luteinising - Failure of ovulation hormone (b) Insulin - Diabetes insipidus (c) Thyroxine - Tetany (d) Parathyroid - Diabetes mellitus hormone
Last Answer : (a) Luteinising - Failure of ovulation hormone
Description : Gonadotropin releasing hormone (GnRH) stimulates the release of: a) ACTH. b) Growth hormone. c) Leutinising Hormone (LH). d) Thyroid stimulating hormone (TSH). e) Opiate peptides.
Last Answer : c) Leutinising Hormone (LH).
Description : Body water is regulated by the hormone: (A) Oxytocin (B) ACTH (C) FSH (D) Epinephrine
Description : Placenta secretes all of the following except (A) FSH (B) Progesterone (C) Estrogen (D) Chorionic gonadotropin HORMONE METABOLISM 225
Description : Thyroid stimulating hormone is a dimer. The α-subunits of TSH, LH, FSH are identical. Thus the biological specificity must therefore be β subunit in which the number of amino acids is (A) 78 (B) 112 (C) 130 (D) 199
Description : Which of the following hormone increases the absorption of glucose from G.I.T? (A) Insulin (B) Throid hormones (C) Glucagon (D) FSH
Description : Progesterone is transported in blood by (A) Transcortin (B) Sex hormone binding globulin (C) Albumin (D) Testosterone estrogen binding globulin
Description : Conversion of testosterone to estradiol requires the enzyme: (A) Aromatase (B) Dehydrogenase (C) Lyase (D) Isomerase HORMONE METABOLISM 215
Description : The defect in adrenal cortex responsible for lack of glucocorticoids and mineralcorticoids is (A) Androstenedione deficiency (B) 17 α -OH progesterone deficiency (C) C-21 hydroxylase deficiency (D) Testosterone deficiency HORMONE METABOLISM 209
Description : Cyclic AMP is formed from ATP by the enzyme adenylate cyclase which is activated by the hormone: (A) Insulin (B) Epinephrine (C) Testosterone (D) Progesterone
Last Answer : B
Description : Some important events in the human female reproductive cycle are given below. Arrange the events in a proper squence. A- Secretion of FSH, B - Growth
Last Answer : Some important events in the human female reproductive cycle are given below. Arrange the ... C. `ararrdrarrcrarrerarrb` D. `brarrararrcrarrdrarre`.
Description : Identify the correct statement on inhibin'. (a) Is produced by granulosa cells in ovary and inhibits the secretion of LH (b) Is produced by nurse cells in testes and inhibits the secretion of LH ... , FSH and prolactin (d) Is produced by granulosa cells in ovary and inhibits the secretion of FSH
Last Answer : (d) Is produced by granulosa cells in ovary and inhibits the secretion of FSH
Description : Select the incorrect statement. (a) LH and FSH decrease gradually during the follicular phase. (b) LH triggers secretion of androgens from the Leydig cells. (c) FSH stimulates the Sertoli cells which help in spermiogenesis. (d) LH triggers ovulation in ovary.
Last Answer : (a) LH and FSH decrease gradually during the follicular phase.
Description : In women of child bearing age, clomiphene citrate produces the following actions except: A. Hot flushes B. Ovulation C. Decreased FSH and LH secretion D. Polycystic ovaries
Last Answer : C. Decreased FSH and LH secretion
Description : Transdermal estradiol differs from oral estrogen therapy in that it: A. Causes less induction of hepatic synthesis of clotting factors B. Does not inhibit FSH secretion C. Does not affect vaginal cytology D. All of the above are correct
Last Answer : A. Causes less induction of hepatic synthesis of clotting factors
Description : A 55-year-old male undergoes a total abdominal colectomy. Which of the following statement(s) is/are true concerning the hormonal response to the surgical procedure? a. Adrenocorticotropic ... in serum insulin and a fall in glucagon accelerate hepatic glucose production and maintain gluconeogenesis
Last Answer : Answer: a, c One of the earliest consequence of a surgical procedure is the rise in levels of circulating cortisol that occur in response to a sudden outpouring of ACTH ... hepatic glucose production, and, with other hormones (epinephrine and glucocorticoids), gluconeogenesis is maintained
Description : Anti-diuretic diuretic hormone (ADH) a. is synthesized by the posterior lobe of the pituitary gland b. is released by neurosecretion c. its secretion is increased by a low plasma osmolarity d. increases the permeability of the distal convoluted tubule
Last Answer : is released by neurosecretion
Description : Location and secretion of Leydig’s cells are (a) liver-cholesterol (b) ovary-estrogen (c) testis-testosterone (d) pancreas-glucagon.
Last Answer : (c) testis-testosterone
Description : Occurrence of Leydig’s cells and their secretion is (a) ovary and estrogen (b) liver and cholesterol (c) pancreas and glucagon (d) testis and testosterone.
Last Answer : d) testis and testosterone.
Description : Secretion of progesterone by corpus luteum is initiated by (a) testosterone (b) thyroxine (c) MSH (d) LH.
Last Answer : d) LH.
Description : Finasteride acts by: A. Blocking testosterone receptors in the prostate gland B. Reducing testosterone secretion from testes C. Reducing LH secretion from pituitary D. Lowering circulating as well as prostatic dihydrotestosterone concentration
Last Answer : D. Lowering circulating as well as prostatic dihydrotestosterone concentration
Description : What is follicle stimulating hormone (FSH)? -Biology
Last Answer : answer:
Description : Which of the following hormone levels will cause release of ovum (ovulation) from the Graffian follicle? (a) High concentration of Estrogen (b) High concentration of Progesterone (c) Low concentration of LH (d) Low concentration of FSH
Last Answer : a) High concentration of Estrogen
Description : Sertoli cells are regulated by the pituitary hormone known as (a) LH (b) FSH (c) GH (d) prolactin
Last Answer : FSH