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 : High level of T3 and T4 and low TSH in serum indicates (A) Hyperthyroidism of pituitary origin (B) Hypothyroidism of pituitary origin (C) Hyperthyroidism of thyroid origin (D) Hypothyroidism of thyroid origin
Last Answer : Answer : C
Description : Administration of TSH increases serum T3 and T4 in (A) Hyperthyroidism of pituitary origin (B) Hyperthyroidism of thyroid origin (C) Hypothyroidism of pituitary origin (D) Hypothyroidism of thyroid origin
Description : In males, secretion of luteinising hormone is inhibited by (A) Gonadotropin releasing hormone (B) FSH (C) High blood level of testosterone (D) Inhibin
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 : Glucagon activates the enzyme adenylcyclase which causes the increase of blood sugar level. Hence this hormone is called (A) Hypoglycemic factor (B) Hyper glycemic factor (C) Antidiauritic factor (D) Thyrotropin-releasing factor
Last Answer : Answer : B
Description : Which of the following is the most common cause of Hypothyroidism in iodine sufficient area? Options: 1) Iatrogenic hypothyroidism 2) Post-partum thyroiditis 3) Autoimmune thyroiditis 4) Thyroid aplasia
Last Answer : Correct Answer: 3) Autoimmune thyroiditis
Description : A 20 yr. old female patient presents with pain in thyroid region of the neck since few days. She gives recent history of mumps. On palpation thyroid is tender and her thyroid function ... 1) de Quervain's thyroiditis 2) Silent thyroiditis 3) Primary thyrotoxicosis 4) Hashimoto's thyroiditis
Last Answer : Correct Answer: 1) de Quervain’s thyroiditis
Description : Regulation of ACTH secretion occurs through (A) Corticotropin releasing hormone (CRH) and corticotropin release inhibiting hormone (CRIH) of hypothalamus (B) Feedback inhibition by cortisol (C) CRH and feedback inhibition by cortisol (D) CRIH and feedback inhibition by cortisol
Description : The most abundant thyroid hormone in blood is (A) Free T3 (B) T3 bound to TBG (C) Free T4 (D) T4 bound to TBG
Description : The following are true: a. thyroxine is formed by iodination of tyrosine b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5 c. about 99.5% of thyroxines is protein bound d. T3 is more active than T4
Last Answer : T3 is more active than T4
Description : Thyrotropin releasing hormone is a (A) Dipeptide (B) Tripeptide (C) Octapeptide (D) Decapeptide
Description : A nonapeptide among the following is (A) Antidiuretic hormone (B) Insulin (C) ACTH (D) Thyrotropin releasing hormone
Last Answer : Answer : A
Description : Reverse T3 is (A) A synthetic compound given counter the effects of T3 (B) Formed from T4 but has no hormone function (C) Formed by isomerisation of T3 (D) Formed from T4 and has hormone function
Description : The most powerful thyroid hormone is (A) Reverse T3 (B) DIT (C) T3 (D) T4
Description : The following are true about the thyroid hormone a. iodide ions enter the follicle cells by passive diffusion b .T4 and T3 bind to the receptors in nuclei c. thyroxine, once ... thyroglobulin until released d. a greater proportion of tri-iodothyronine is formed when iodine is deficient
Last Answer : T4 and T3 bind to the receptors in nuclei
Description : All the following statements about TSH are true except (A) It is a tropic hormone (B) It acts on para-follicular cells of thyroid glands (C) Its receptors are membrane-bound (D) Its second messenger is cyclic AMP
Description : The hypothalamus contains cells which are sensitive to: a. PO2 b. arterial blood pressure c. [H+] d. TSH (thyroid-stimulating hormone) concentration
Last Answer : TSH (thyroid-stimulating hormone) concentration
Description : What is the cascade of events that follows a stress or trauma to produce adrenal reaction? A) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex mineralocorticoids and ... ) E) adrenal cortex (hormones)-hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)
Last Answer : A) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex mineralocorticoids and glucocorticoids (regulate metabolism and sugar level)
Description : All of the following statements about pancreatic somatostain are true except (A) It is secreted by δ cells of islets of Langerhans (B) It stimulates the secretion of gastrin (C) It inhibits the secretion of secretin (D) It inhibits the secretion of cholecystokininpancreozymin
Description : All of the following statements about cholecystokinin pancreozymin are true except (A) It is secreted by mucosa of small intestine (B) It stimulates secretion of pancreatic juice rich in enzymes (C) It stimulates contraction of gall bladder (D) It inhibits gastric motility
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 : Secretion of glucocorticoida is regulated by all the following except (A) Hypothalamus (B) Anterior pituitary (C) Feedback control by blood glucose (D) Feedback control by glucocorticoids
Description : In a terrestrial ecosystem such as forest, maximum energy is in which trophic level? (a) T3 (b) T4 (c) T1
Last Answer : (c) T1
Description : Bamboo plant is growing in a fir forest then what will be the trophic level of it? (a) First trophic level (T1) (b) Second trophic level (T2) (c) Third trophic level (T3) (d) Fourth trophic level (T4)
Last Answer : a) First trophic level (T1)
Description : One of the following does not bind T3 and T4: (A) Albumin (B) TBG (C) TBPA (D) Haptoglobin
Description : When iodine supplies are sufficient the T3 and T4 ratio in thyroglobulin is (A) 1 : 2 (B) 1 : 4 (C) 1 : 7 (D) 1 : 10
Description : In primary hypothyroidism the useful estimation is of (A) T3 (B) T4 (C) TBG (D) Autoantibodies
Description : Insufficient free T3 and T4 results in (A) Grave’s disease (B) Mysoedema (C) Cushing syndrome(D) Gigantism
Description : Iodine is the constituent of (A) T3 and T4 (B) PTH (C) Insulin (D) Adrenaline
Description : Secretion of growth hormone is inhibited by (A) Somatomedin C (B) Somatostatin (C) Feedback inhibition(D) All of these
Description : Melatonin: a. is secreted by pineal body b. secretion is highest at night c. secretion is inhibited by light d. all above
Last Answer : all above
Description : Secretion of prolactin is regulated by (A) Feedback inhibition (B) Prolactin releasing hormone (C) Prolactin release inhibiting hormone (D) All of these
Description : Secretion of somatotrophin is promoted by (A) Somatomedin C (B) Somatostatin (C) Growth hormone releasing hormone (D) Hypoglycaemia
Description : All the following statements about TSH are true except (A) It is a glycoprotein (B) It is made up of α- and β-subunits (C) Receptor recognition involves both the subunits (D) Its subunit is identical with those of FSH and LH
Description : Thyroid hormone: a. increases the absorption of carbohydrate from the intestine b. exerts a negative feedback action on TSH production c. increases the concentration of 2,3-DPG within the red blood cells d. all above
Description : All the following statements about angiotensin are true except (A) Its precursor is an α2-globulin (B) Its active form is an octapeptide (C) It is a vasodilator (D) It increases the secretion of aldosterone
Description : Chemical natrue of all the hormone which are secreted from pituitary ad hypothalamus is
Last Answer : Chemical natrue of all the hormone which are secreted from pituitary ad hypothalamus is
Description : What is the function of thyroxine (T4) and triiodothyronine (T3)? -Biology
Last Answer : answer:
Description : What digital carrier transmits a digital signal at 274.176 Mbps? A. T1 B. T3 C. T2 D. T4
Last Answer : D. T4
Description : A digital carrier facility used to transmit a DSI-formatted signal at 1.544. Mbps. A. T2 B. T1 C. T4 D. T3
Last Answer : B. T1
Description : Which phage always carries a small piece of E.coli genome? A.Lambda B.Mu C.T4 D.T3
Last Answer : B.Mu
Description : Which phage always carries a small piece of E.coli genome? A- Lambda B- .Mu C- T4 D- T3
Last Answer : .Mu
Description : Which of the following statements is correct in relation to the endocrine system? (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as ... in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.
Last Answer : (a) Non-nutrient chemicals produced by the body in trace amounts that act as intercellular messenger are known as hormones.
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 : Thyrotropin exerts the following actions on the thyroid gland except: A. Increases vascularity B. Inhibits proteolysis of thyroglobulin C. Induces hyperplasia and hypertrophy D. Promotes iodide trappin
Last Answer : B. Inhibits proteolysis of thyroglobulin
Description : 16.18 Thyrotropin exerts the following actions on the thyroid gland except: A. Increases vascularity B. Inhibits proteolysis of thyroglobulin C. Induces hyperplasia and hypertrophy D. Promotes iodide trapping
Description : The normal serum level of triiodothyronine (T3) is (A) 0.2–0.5 ng/ml (B) 0.7–2.0 ng/ml (C) 2.0–4.0 ng/ml (D) 5.0–8.0 ng/ml HORMONE METABOLISM 211
Description : A hormone which cannot cross the blood brain barrier is (A) Epinephrine (B) Aldosterone (C) ACTH (D) TSH
Description : All of the following statements about thioredoxin reductase are true except: (A) It requires NADH as a coenzyme (B) Its substrates are ADP, GDP, CDP and UDP (C) It is activated by ATP (D) It is inhibited by dADP