6951. Insulin increases the activity of___________?
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A. HMG. CoA reductase

B. HMG- CoA synthase

C. HMG- CoA lyase

D. Thiolase

6952. Carotid body function in an organ work as_______________?
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A. Differential pressure of oxygen in in tissue fluids

B. Differential pressure of oxygen in in hemoglobin synthesis

C. Differential pressure of oxygen in arterial blood

D. Differential pressure of oxygen in venous blood

6953. Limitation of inspiration by vagal lung inflation signals is called the______________?
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A. Bainbridge reflex

B. Dynamic stretch reflex

C. Autonomic reflex

D. Herring Breur reflex
6954. All are seen in Cushing s syndrome except_______________?
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A. Truncal obesity

B. Hypoglycemia

C. Hypertension

D. Poor wound healing

6955. Bile salt repeats its cycle in____________?
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A. 4 times a day

B. 8 times a day

C. 10 times a day in fasting

D. 2 times in between meals

6956. Progesterone production in the ovary is primarily by______________?
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A. Mature follicles

B. Corpora lutea

C. Corpora albicans

D. Stroma

6957. All are actions of CCK except_______________?
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A. Causes GB contraction

B. Increased pancreatic secretion

C. Relax lower esophageal sphincter

D. Increased gastric secretion
6958. Hormones FSH & LH of anterior pituitary gland acts on___________________?
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A. Testis but not ovaries

B. Ovaries but not testis

C. Both Testis and ovaries

D. Adrenal cortex

6959. Adrenal gland has two parts; cortex and medulla. Which of the following is correct______________?
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A. Cortex is under the control of ACTH

B. Both cortex and medulla are under the control of autonomic nervous system

C. Cortex is exocrine and medulla is endocrine

D. All of the above

6960. Alveolar O2 tension is______________?
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A. Not affected by respiratory depression

B. Increased by hyperventilation

C. Decreased by hyperventilation

D. Similar to venous O2 tension

6961. The supraoptic nucleus of the hypothalamus is believed to control secretion of which of the following hormones ?
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A. Growth hormone

B. Oxytocin

C. Adreno corticotrophic hormone

D. Antidiuretic hormone
6962. Reverse T3 is__________________?
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A. Isomerisation product of T3 and active

B. Reverse of T3

C. Synthetic derivative

D. Isomerisation product of T3 and inactive
6963. Which of the following hormones act via cAMP ?
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A. Adrenalin

B. Vasopressin

C. Parathormone

D. Insulin

6964. What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?
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A. P50 increase and the oxygen affinity decreases

B. P 50 decreases and the oxygen affinity increases

C. P50 and oxygen affinity decrease

D. P 50 and oxygen affinity increase
6965. Hypoxia is characterized by ___________?
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A. All of the above

B. Favorable response to 100% oxygen

C. Low arterial PO2

D. Intense chemoreceptor response

6966. Hormone released during increased stress is_____________?
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A. Somatostatin

B. Thyroxine

C. Growth hormone

D. Cortisol
6967. A phaeochromocytoma is a tumour of the____________?
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A. None of the above

B. Parathyroids

C. Adrenal cortex

D. Pituitary

6968. Pepsinogen is activated by ___________________ ?
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A. Enterokinase

B. Chymotrypsin

C. Trypsin

D. Low pH
6969. Menopausal hormonal relations are______________?
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A. Lh/FSH increase

B. Gonadotropins increase , estrogens decrease

C. Estrogens and gonadotropins decrease

D. Both increase

6970. A diet deficient in calcium will result in_____________?
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A. Production of parathyroid hormone and bone resorption

B. Increased ability to cross link fibrin

C. Production of Calcitonin and a low blood calcium level

D. Stimulation of the thyroid gland

6971. Glucocorticoids have all the following actions except_______________?
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A. Anti insulin action in peripheral tissues

B. Increase in protein catabolism

C. Decrease in glucose uptake by the heart

D. Increase in blood glucose level

6972. Oxygen affinity is increased by all except_________________?
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A. Increased HbF

B. Hypothermia

C. Hypoxia

D. Alkalosis

6973. Thyroxine causes all the following except______________?
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A. Increased basal metabolism

B. Increased oxygen consumption

C. Decreased cell metabolism

D. Increased pulmonary ventilation

6975. Oxygen affinity decreases in_________________?
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A. HbF

B. Hypoxia

C. Increased pH

D. Hypothermia

6976. Glucocorticoids decrease inflammatory reaction by reducing_______________?
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A. Fibroblastic activity

B. Activity of histamine

C. Release of histamine

D. Neutrophils

6977. Bile acids are derived from_____________?
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A. Cholesterol

B. Bile salts

C. A & B

D. Bile pigments

6978. The most important function of hydrochloric acid in the stomach is_______________?
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A. Neutralization of chyme

B. Stimulation of pancreatic secretion

C. Activation of pepsinogen

D. Destruction of bacteria

6979. The effect which is seen due to decrease in serum calcium concentration is_______________?
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A. Depression of Nervous system

B. Increase the renal absorption

C. Relaxation of muscle

D. Excitability of the muscle
6980. Most potent stimulus for secretin is______________?
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A. Fat

B. Dilattion of intestine

C. Protein

D. Acid chyme
6982. Cholagogues are the substances, which cause______________?
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A. Increase concentration of bile

B. Favours acidification of bile

C. Contraction of the gallbladder

D. Increase secretion of bile

6983. The type of hypoxia present in high attitude is_____________?
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A. Stagnant Hypoxia

B. Hypoxic Hypoxia

C. Anemic Hypoxia

D. Histotoxic Hypoxia

6984. Of the following is a reflex mediated by vagus ?
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A. Bile flow from liver

B. Mucous secretion from the Brunners glands

C. Pancreatic secretion of bicarbonate

D. Cephalic phase of gastric secretion
6985. following are the features of cretinism, except_____________?
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A. Normal intelligence

B. Stunted growth

C. Idiotic look

D. Pot- belly

6987. In thyrotoxicosis , there is______________?
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A. Increase in serum proteins which bind throxine

B. Decrease in calcium excretion

C. Increase in calcium excretion

D. Potentiation of catecholamine action
6988. FSH is secreted by_____________?
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A. Acidophiles

B. Basophils

C. Chromophobes

D. Theca intern cells

6989. Non- respiratory function of the lung is_________________?
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A. Serotonin metabolism

B. Dopamine metabolism

C. PGE2 production

D. Adrenaline metabolism

6991. Ovulation is associated with sudden rise in______________?
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A. Prolactin

B. L.H

C. Testosterone

D. Oxytocin

6992. Excess of cortisol causes______________?
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A. Acromegaly

B. Cushing s syndrome

C. Diabetes insipidus

D. Conns syndrome

6993. Hormones, which stimulate spermatogenesis, are______________?
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A. A.D.H. and Oxytocin

B. Testosterone and F.S. H

C. Thyroxine and parathormone

D. Insulin and glucagon

6994. Glucagon is secreted by ____________?
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A. Beta cells of pancreas

B. Alpha cells of pancreas

C. None of the above

D. Gamma cells of pancreas

6995. The duodenum secretes a hormone which has following effects except_______________?
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A. Causes copious pancreatic juice rich in bicarbonate and poor in enzymes

B. Leads to meager flow of pancreatic juice rich in enzymes

C. Causes gall bladder to contract and sphincter of oddi to relax

D. Increases gastric motility
6996. Pharyngeal phase of deglutition_____________?
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A. Vocal cords are closed

B. A and B

C. Is a reflex mechanism

D. Is a voluntary mechanism

6997. Smoking causes_____________?
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A. Ciliary motility

B. Mucous secretion

C. Cellular hyperplasia

D. All of the above
6998. The blood glucose level in diabetes mellitus is decreased by removal of the______________?
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A. Anterior pituitary

B. Parathyroids

C. Thyroid

D. Posterior pituitary

6999. Fats absorbed with the help of bile salts are_______________?
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A. Higher fattery acids, diglycerides and monoglycereides

B. Free fatty acid

C. All of the above

D. Glycerol

7000. Maximum secretory glands in stomach are________________?
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A. Gastric glands

B. Pyloric glands

C. Fundic glands

D. Brunners glands