Which of the following is used for inducing labour? (A) Prostaglandins (B) Prostacyclins (C) Vasopressin (D) Thromboxanes

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Answer :

Answer :  A

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Description : Aspirin blocks the synthesis of (A) Prostaglandins only (B) Prostacyclins only (C) Thromboxanes only (D) All of these

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Description : Slow reacting Substance of Anaphylaxis is a mixture of (A) Prostaglandins (B) Prostacyclins (C) Thromboxanes (D) Leukotrienes

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Description : Cyclo-oxygenase is involved in the synthesis of (A) Prostaglandins (B) Thromboxanes (C) Both (A) and (B) (D) None of these

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Description : Lipo-oxygenase is required for the synthesis of (A) Prostaglandins (B) Leukotrienes (C) Thromboxanes (D) All of these

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Description : Anti-inflammatory corticosteroids inhibit the synthesis of (A) Leukotrienes (B) Prostaglandins (C) Thromboxanes (D) All of these

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Description : Eicosanoids mediate inflammation in a variety of ways. Of the following statements, which are true with regard to this? a. Eicosanoids are stored in cytoplasmic granules ... include vasodilatation, vasoconstriction, increased vascular permeability and both chemotaxis and chemoattractant inhibition

Last Answer : Answer: b, d The eicosanoids are derived from arachidonic acid (eicosatetraenoic acid) and consist of prostaglandins, thromboxanes, leukotrienes and lipoxins. The eicosanoids are not ... nervous system d. Mononuclear phagocytes release a variety of proinflammatory cytokines and growth factors

Description : True statements regarding eicosanoids include which of the following? A. Prostaglandins and thromboxanes are synthesized via the cyclo-oxygenase pathway. B. The vasoconstricting, platelet-aggregating, ... prostaglandins have a short circulation half-life and exert most of their effects locally.

Last Answer : Answer: ABD DISCUSSION: The eicosanoids are a group of compounds arising from the metabolism of arachidonic acid. The prostaglandins and thromboxanes are synthesized via the cyclo-oxygenase ... effects and may be involved in the physiologic responses associated with anaphylactic and septic shock

Description : Which of the following property of prostaglandins has been utilized by chinicians in hospital for (A) Inducing fever (B) Causing inflammation (C) Effecting smooth muscle contraction (D) Disaggregation of spermatozoa

Last Answer : Answer : C

Description : All the following are functions of prostaglandins except (A) Lowering of B.P (B) Introduction of labour (C) Anti inflammatory (D) Prevention of myocardial infraction

Last Answer : Answer : D

Description : One of the important functions of prostacyclins is (A) Inhibition of platelet aggregation (B) Contraction of uterus (C) Decrease of gastric secretion (D) Relieving osthma

Last Answer : Answer : A

Description :  Prostaglandins play pathophysiological role in the following except: A. Patency of ductus arteriosus B. Regulation of renal tubular salt absorption C. Ventricular remodeling after myocardial infarction D. Initiation of labour

Last Answer : C. Ventricular remodeling after myocardial infarction 

Description : Thromboxanes cause (A) Vasodilation (B) Bronchoconstriction (C) Platelet aggregation (D) All of these

Last Answer : Answer : C

Description : Enhanced facultative reabsorption of water by Vasopressin is mediated by (A) Cyclic AMP (B) Ca++ (C) Cyclic GMP (D) Mg++

Last Answer : Answer : A

Description : Vasopressin (ADH) (A) Enhance facultative reabsorption of water (B) Decreases reabsorption of water (C) Increases excretion of calcium (D) Decreases excretion of calcium

Last Answer : Answer : A

Description : Which of the following hormones is not involved in carbohydrate metabolism? (A) ACTH (B) Glucagon (C) Vasopressin (D) Growth hormone

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Description : Increased reabsorption of water from the kidney is the major consequence of which of the following hormones? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone

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Description : Which of the following is noted in cushing’s syndrome, a tumor associated disease of the adrenal cortex? (A) Decreased production of epinephrine (B) Excessive production of epinephrine (C) Excessive production of vasopressin (D) Excessive production of cortisol

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Description : __________ hormone is a single chain polypeptide having 32 amino acids with molecular weight of 3,600. (A) Testosteron (B) Thyroxine (C) Calcitonine (D) Vasopressin

Last Answer : Answer : C

Description : Which of the following does not have disulphide bond? (A) Oxytocin (B) Vasopressin (C) Insulin (D) Glucagon

Last Answer : Answer : D

Description : Vasopressin is also known as (A) Antidiabetogenic hormone (B) Antidiuretic hormone (C) Somatotropic hormone (D) Pitoxin

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Description : Which of the following hormones are synthesized as prehormones (A) Vasopressin and oxytocin (B) Growth hormone and insulin (C) Insulin and parathyroid hormone (D) Insulin and Glucagon

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Description : Diabetes insipidus is caused by deficient secretion of (A) Insulin (B) Glucagon (C) Vasopressin (D) Oxytocin

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Description : A hormone synthesised in the hypothalamus is (A) Melatonin (B) Melanocyte stimulating hormone (C) Vasopressin (D) Prolactin

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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

Last Answer : Answer : C

Description : Vasopressin and oxytocin circulate unbound to proteins and have very short plasma half lives, on the order of (A) 1–2 minutes (B) 2–4 minutes (C) 5–8 minutes (D) 10–12 minutes

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Description : The hormone required for uterine muscle contraction for child birth is (A) Progesterone (B) Estrogen (C) Oxytocin (D) Vasopressin

Last Answer : Answer : C

Description : A hormone secreted from posterior pituitary is (A) Vasopressin (B) Thyrotropic hormone (C) Prolactin (D) Adrenocorticotropic hormone CHAPTER 8 CHAPTER 8 HORMONE METABOLISM ABOLISM

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Description : A hormone secreted from anterior pituitary is (A) Growth hormone (B) Vasopressin (C) Oxytocin (D) Epinephrine

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Description : The harmone acting directly on intestinal mucosa and stimulating glucose absorption is (A) Insulin (B) Glucagon (C) Thyroxine (D) Vasopressin

Last Answer : Answer : C

Description : Which of the following hormones is not involved in carbohydrate metabolism? (A) Cortisol (B) ACTH (C) Glucogen (D) Vasopressin

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Description : The activity of kinins is modulated by (A) Prostaglandins (B) Ca++ (C) Increased cAMP level (D) Increased cGMP level

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Description : Which one of the following hormones is derived most completely from tyrosine? (A) Glucagon (B) Thyroxine (C) Insulin (D) Prostaglandins

Last Answer : Answer : B

Description : A cup of strong coffee would be expected to (A) Interfere with synthesis of prostaglandins (B) Decrease the effects of Glucagon (C) Enhance the effects of epinephrine (D) Provide the vitamin nicotinic acid

Last Answer : Answer : C

Description : The suffix number in the names of prostaglandins gives the number of (A) OH groups (B) Double bonds (C) Acid groups (D) Ketoacids

Last Answer : Answer : B

Description : Which of tne of the following scientists has not worked in the field of prostaglandins? (A) Voneuler (B) Sultan Karim (C) Andre robet (D) Kendal

Last Answer : Answer : D

Description : Prostaglandins are (A) C2 unsaturated acids (B) C27 saturated alcohols (C) C20 saturated acids (D) C27 saturated alcohols

Last Answer : Answer : A

Description : Richest source of prostaglandins in a human male is (A) Blood (B) Urine (C) Semen (D) C.S.F.

Last Answer : Answer : C

Description : A cup of strong coffee would be expected to (A) Interfere with the synthesis of prostaglandins (B) Decrease the effect of glucagon (C) Enhance the effect of epinephrine (D) Provide the vitamin nicotinic acid

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Description : From arachidonate, synthesis of prostaglandins is catalysed by (A) Cyclooxygenase (B) Lipoxygenase (C) Thromboxane synthase (D) Isomerase

Last Answer : Answer : A

Description : Cholesterol is the precursor for the biosynthesis of (A) fatty acid (B) prostaglandins (C) bile acids (D) sphingmyelin

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Description : Acrolein Test is positive for (A) Glycerol (B) Prostaglandins (C) Carbohydrates (D) Proteins

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Description : Prostaglandins are synthesized in the body from (A) Myristic acid (B) Arachidonic acid (C) Stearic acid (D) Lignoceric acid

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Description : All active prostaglandins have atleast one double bond between positions: (A) 7 and 8 (B) 9 and 10 (C) 11 and 12 (D) 13 and 14 FATS AND FATTY ACID METABOLISM 95

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Description : Prostaglandins have a common structure based on prostanoic acid which contains carbon atoms: (A) 12 (B) 16 (C) 18 (D) 20

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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

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Description : The prostaglandins are synthesized from (A) Arachidonic acid (B) Oleic acid (C) Linoleic acid (D) Linolenic acid

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Description : Prostaglandins decrease all of the following except (A) Gastric acid secretion (B) Blood pressure (C) Uterine contraction (D) Platelet aggregation

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Description : Prostaglandins stimulate (A) Aggregation of platelets (B) Lipolysis in adipose tissue (C) Bronchodilatation (D) Gastric acid secretion

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Description : Prostaglandins are inactivated by (A) 15-Hydroxyprostaglandin dehydrogenase (B) Cyclo-oxygenase (C) Lipo-oxygenase (D) None of these

Last Answer : Answer : A

Description : Synthesis of prostaglandins is inhibited by (A) Glucocorticoids (B) Aspirin (C) Indomethacin (D) All of these

Last Answer : Answer : D