Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these 220 MCQs IN BIOCHEMISTRY

Secretion of thyroid hormones is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback regulation (D) All of these 220 MCQs IN BIOCHEMISTRY
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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 : 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

Last Answer : Answer : C

Secretion of PTH is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback effect of plasma PTH (D) Feedback effect of plasma calcium

Description : Secretion of PTH is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback effect of plasma PTH (D) Feedback effect of plasma calcium

Last Answer : Answer : D

All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland (C) It is the precursor of ACTH and melatonin (D) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Description : All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland ... ) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Anterior pituitary & posterior pituitary hormones are regulated by hypothalamus respectively through

Description : Anterior pituitary & posterior pituitary hormones are regulated by hypothalamus respectively through

Last Answer : Anterior pituitary & posterior pituitary hormones are regulated by hypothalamus respectively through

Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH is no longer released from the hypothalamus. C) Uterine stretching sends nerve impulses to the hypothalamus that releases oxytocin that triggers uterine contraction. D) FSH and LH stimulate the gonads to produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Description : Which is an example of negative feedback? A) Nursing action stimulates the hypothalamus to release oxytocin that triggers mammary gland milk production. B) When the blood becomes dilute, ADH ... produce sperm or eggs. E) TRH stimulates the anterior pituitary to release thyroid-stimulating hormone.

Last Answer : B) When the blood becomes dilute, ADH is no longer released from the hypothalamus

The part of the brain controlling the anterior pituitary gland secretions is the A) medulla. B) thalamus. C) cerebral cortex. D) hypothalamus. E) cerebellum. Answer: D 21. Which of the following hormones is/are NOT a product of the anterior lobe of the pituitary? A) growth hormone B) antidiuretic hormone C) gonadotropic hormones D) thyroid-stimulating hormone E) adrenocorticotropic hormone

Description : The part of the brain controlling the anterior pituitary gland secretions is the A) medulla. B) thalamus. C) cerebral cortex. D) hypothalamus. E) cerebellum. Answer: D ... B) antidiuretic hormone C) gonadotropic hormones D) thyroid-stimulating hormone E) adrenocorticotropic hormone

Last Answer : B) thalamus.

Which of the following endocrine glands does NOT produce its own hormones but stores hormones produced by the hypothalamus? A) thyroid B) adrenal cortex C) adrenal medulla D) posterior pituitary E) anterior pituitary

Description : Which of the following endocrine glands does NOT produce its own hormones but stores hormones produced by the hypothalamus? A) thyroid B) adrenal cortex C) adrenal medulla D) posterior pituitary E) anterior pituitary

Last Answer : D) posterior pituitary

Which gland in the human body regulates the secretion of hormones from the pituitary gland? (1) Thymus gland (2) Thyroid gland (3) Adrenal gland (4) Hypothalamus gland

Description : Which gland in the human body regulates the secretion of hormones from the pituitary gland? (1) Thymus gland (2) Thyroid gland (3) Adrenal gland (4) Hypothalamus gland

Last Answer : Hypothalamus gland 

Somatotropin is secreted by (A) Hypothalamus (B) Anterior pituitary (C) Posterior pituitary (D) Thyroid gland

Description : Somatotropin is secreted by (A) Hypothalamus (B) Anterior pituitary (C) Posterior pituitary (D) Thyroid gland

Last Answer : Answer : B

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 : 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

Last Answer : Answer : C

The controlling or master gland(s) of the body is(are) the A) adrenal medulla and cortex. B) testes and ovaries. C) hypothalamus and anterior pituitary. D) pancreas. E) thyroid and parathyroid.

Description : The controlling or master gland(s) of the body is(are) the A) adrenal medulla and cortex. B) testes and ovaries. C) hypothalamus and anterior pituitary. D) pancreas. E) thyroid and parathyroid.

Last Answer : C) hypothalamus and anterior pituitary.

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 glucocorticoids (regulate metabolism and sugar level) B) hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)-adrenal cortex epinephrine and norepinephrine (regulate metabolism and sugar level) C) anterior pituitary (ACTH)-hypothalamus (ACTH-releasing hormone)-adrenal cortex hormones D) adrenal cortex (hormones)-anterior pituitary (ACTH)-hypothalamus (ACTH-releasing hormone) E) adrenal cortex (hormones)-hypothalamus (ACTH-releasing hormone)-anterior pituitary (ACTH)

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)

Secretion of MSH is regulated by (A) Feedback mechanism (B) Melatonin (C) Hypothalamic hormones (D) ACTH HORMONE METABOLISM 217

Description : Secretion of MSH is regulated by (A) Feedback mechanism (B) Melatonin (C) Hypothalamic hormones (D) ACTH HORMONE METABOLISM 217

Last Answer : Answer : C

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 hormones. (b) Releasing and inhibitory hormones are produced by the pituitary gland. (c) Adenohypophysis is under direct neural regulation of the hypothalamus. (d) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones.

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.

The posterior pituitary gland is not a ‘true’ endocrine gland because (a) it is provided with a duct (b) it only stores and releases hormones (c) it is under the regulation of hypothalamus (d) it secretes enzymes.

Description : The posterior pituitary gland is not a ‘true’ endocrine gland because (a) it is provided with a duct (b) it only stores and releases hormones (c) it is under the regulation of hypothalamus (d) it secretes enzymes.

Last Answer : (b) it only stores and releases hormones

Excess secretion from this gland can cause a person to be thin, hyperactive, always hungry, & irritable. a) adrenal cortex b) thyroid c) anterior pituitary d) adrenal medulla

Description : Excess secretion from this gland can cause a person to be thin, hyperactive, always hungry, & irritable. a) adrenal cortex b) thyroid c) anterior pituitary d) adrenal medulla

Last Answer : ANSWER: B -- THYROID

The gonadotrophic hormones are secreted by (a) anterior lobe of pituitary (b) interstitial cells of testes (c) adrenal cortex (d) posterior part of thyroid.

Description : The gonadotrophic hormones are secreted by (a) anterior lobe of pituitary (b) interstitial cells of testes (c) adrenal cortex (d) posterior part of thyroid.

Last Answer : (a) anterior lobe of pituitary

The hypothalamic-releasing hormones directly control the A) adrenal cortex. B) thyroid. C) anterior pituitary. D) posterior pituitary. E) pancreas.

Description : The hypothalamic-releasing hormones directly control the A) adrenal cortex. B) thyroid. C) anterior pituitary. D) posterior pituitary. E) pancreas.

Last Answer : C) anterior pituitary.

Which gland in the human body regulates the secretion of hormones from the pituitaiy gland? (1) Thymus gland (2) Thyroid gland (3) Adrenal gland (4) Hypothalamus gland

Description : Which gland in the human body regulates the secretion of hormones from the pituitaiy gland? (1) Thymus gland (2) Thyroid gland (3) Adrenal gland (4) Hypothalamus gland

Last Answer : (4) Hypothalamus gland Explanation: Hormone secretion from the anterior pituitary gland is regulated by releasing hormones secreted by the hypothalamus. Neuroendocrine cells in the hypothalamus ... release substances into small blood vessels that travel directly to the anterior pituitary gland

Which one of the following glands is responsible for secretion of sex hormones? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Description : Which one of the following glands is responsible for secretion of sex hormones? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Last Answer : (3) Pituitary gland Explanation: The pituitary is sometimes referred to as the "master gland" as it controls hormone functions such as our temperature, thyroid activity, growth during childhood, urine production, testosterone production in males and ovulation and estrogen production' in females.

Which one of the following glands is responsible for secretion of sex hormones ? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Description : Which one of the following glands is responsible for secretion of sex hormones ? (1) Adrenal gland (2) Thyroid gland (3) Pituitary gland (4) Sebaceous gland

Last Answer : Pituitary gland

Prostaglandins are liberated in the circulation by the stimulation of (A) Anterior pituitary glands (B) Posterior pituitary glands (C) Adrenal gland (D) Thyroid gland

Description : Prostaglandins are liberated in the circulation by the stimulation of (A) Anterior pituitary glands (B) Posterior pituitary glands (C) Adrenal gland (D) Thyroid gland

Last Answer : Answer : C

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

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

Which of the following is an accumulation and release centre of neurohormones? (a) Anterior pituitary lobe (b) Posterior pituitary lobe (c) Intermediate lobe of the pituitary (d) Hypothalamus

Description : Which of the following is an accumulation and release centre of neurohormones? (a) Anterior pituitary lobe (b) Posterior pituitary lobe (c) Intermediate lobe of the pituitary (d) Hypothalamus

Last Answer : (d) Hypothalamus

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 prolactin is regulated by (A) Feedback inhibition (B) Prolactin releasing hormone (C) Prolactin release inhibiting hormone (D) All of these

Last Answer : Answer : C

The body temperature is regulated by (1) Pituitory gland (2) Hypothalamus (3) Pineal gland (4) Thyroid gland

Description : The body temperature is regulated by (1) Pituitory gland (2) Hypothalamus (3) Pineal gland (4) Thyroid gland

Last Answer : (2) Hypothalamus Explanation: Hypothalamus is a portion of the brain that contains a number of small nuclei with a variety of functions. One of the most important functions of the ... hormones. The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian cycles.

The body temperature is regulated by— (1) Pituitory gland (2) Hypothalamus (3) Pineal gland (4) Thyroid gland

Description : The body temperature is regulated by— (1) Pituitory gland (2) Hypothalamus (3) Pineal gland (4) Thyroid gland

Last Answer : Hypothalamus

TSH hormone biochemically is a (A) Protein (B) Fat (C) Glycoprotein (D) Carbohydrate 232 MCQs IN BIOCHEMISTRY

Description : TSH hormone biochemically is a (A) Protein (B) Fat (C) Glycoprotein (D) Carbohydrate 232 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Adrenalin is synthesized from (A) Adenine (B) Adenosine (C) Tyrosine (D) Tryptophan 230 MCQs IN BIOCHEMISTRY

Description : Adrenalin is synthesized from (A) Adenine (B) Adenosine (C) Tyrosine (D) Tryptophan 230 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Description : Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Description : Phosphorylated IRS-1 activates GRB-2 which is (A) G-protein receptor binding protein-2 (B) Growth factor receptor binding protein-2 (C) Growth hormone receptor binding protein-2 (D) Glucocorticoid receptor binding protein-2 226 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

Mineralocorticoids increase the tubular reabsorption of (A) Sodium and calcium (B) Sodium and potassium (C) Sodium and chloride (D) Potassium and chloride 224 MCQs IN BIOCHEMISTRY

Description : Mineralocorticoids increase the tubular reabsorption of (A) Sodium and calcium (B) Sodium and potassium (C) Sodium and chloride (D) Potassium and chloride 224 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Tyrosine is required for the synthesis of all of the following except (A) Melatonin (B) Epinephrine (C) Norepinephrine (D) Thyroxine 222 MCQs IN BIOCHEMISTRY

Description : Tyrosine is required for the synthesis of all of the following except (A) Melatonin (B) Epinephrine (C) Norepinephrine (D) Thyroxine 222 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Cyclic AMP acts as the second messenger for all of the following except (A) Oxytocin (B) TSH (C) ACTH (D) FSH 216 MCQs IN BIOCHEMISTRY

Description : Cyclic AMP acts as the second messenger for all of the following except (A) Oxytocin (B) TSH (C) ACTH (D) FSH 216 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Normal serum free testosterone in adult men varies between (A) 1–5 ng/dl (B) 6–9 ng/dl (C) 10–30 ng/dl (D) 50–100 ng/dl 214 MCQs IN BIOCHEMISTRY

Description : Normal serum free testosterone in adult men varies between (A) 1–5 ng/dl (B) 6–9 ng/dl (C) 10–30 ng/dl (D) 50–100 ng/dl 214 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY

Description : Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Description : ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY

Last Answer : Answer : A

Adrenocorticotropic hormone (ACTH) is a single polypeptide containing (A) 25 amino acid (B) 39 amino acid (C) 49 amino acid (D) 52 amino acid 208 MCQs IN BIOCHEMISTRY

Description : Adrenocorticotropic hormone (ACTH) is a single polypeptide containing (A) 25 amino acid (B) 39 amino acid (C) 49 amino acid (D) 52 amino acid 208 MCQs IN BIOCHEMISTRY

Last Answer : Answer : B

The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Description : The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Last Answer : ANSWER: B

The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Description : The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Last Answer : ANSWER: B

The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Description : The gland which maintains body temperature is the _____. A. Pituitary gland B. Thyroid gland C. Adrenals D. Hypothalamus

Last Answer : ANSWER: B

Which is the gland that holds the body's thermostat? (1) Pineal (2) Pituitary (3) Thyroid (4) Hypothalamus

Description : Which is the gland that holds the body's thermostat? (1) Pineal (2) Pituitary (3) Thyroid (4) Hypothalamus

Last Answer : (4) Hypothalamus Explanation: The body keeps its core temperature constant at about 37 C by physiological adjustments controlled by the hypothalamus (Thermostat Center) where there ... Thermoreceptors) and from internal structures (Central Thermoreceptors), which include the hypothalamus itself.

: A _____ is a cytokine that induces fever by stimulating the ______. a. pyrogen, hypothalamus b. pyogen, thalamus c. defensin, thyroid d. perforin, pituitary

Description : : A _____ is a cytokine that induces fever by stimulating the ______. a. pyrogen, hypothalamus b. pyogen, thalamus c. defensin, thyroid d. perforin, pituitary

Last Answer : a. pyrogen, hypothalamus

Which is the gland that holds the body’s thermostat? (1) Pineal (2) Pituitary (3) Thyroid (4) Hypothalamus

Description : Which is the gland that holds the body’s thermostat? (1) Pineal (2) Pituitary (3) Thyroid (4) Hypothalamus

Last Answer : Hypothalamus

Two hormones ….. (a) ….. and ……. (b) …… synthesize in hypothalamus and transport in pituitary gland through …… (c ) …….. and ……. (d) ……. respectively.

Description : Two hormones ….. (a) ….. and ……. (b) …… synthesize in hypothalamus and transport in pituitary gland through …… (c ) …….. and ……. (d) ……. respectively.

Last Answer : Two hormones .. (a) .. and . (b) synthesize in hypothalamus and transport in ... axonal transport b = ADH `rArr` d = portasl circulation

All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Description : All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Last Answer : Answer : A

Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during child birth (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Description : Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during ... (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level

Last Answer : (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. Endocrine Hormone Function/ gland Deficiency symptoms (a) Thyroid Thyroxine Lack of iodine gland in diet results in goitre (b) Corpus Testo- Stimulates luteum sterone spermatogenesis (c) Anterior Oxytocin Stimulates pituitary uterus contraction during child birth (d) Posterior Growth Oversecretion pituitary hormone stimulates (GH) abnormal growth

Description : Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom. Endocrine Hormone Function/ gland Deficiency symptoms (a) ... child birth (d) Posterior Growth Oversecretion pituitary hormone stimulates (GH) abnormal growth

Last Answer : (a) Thyroid Thyroxine Lack of iodine gland in diet results in goitre