Free Physiology MCQs Mock Test Online with Answers

Q1 : Enzymes, which play an important role in calcification are______________?

A: Enolase and Calcitonin B: Alkaline phosphatase and catalase C: Alkaline phosphatase and pyrophophatase D: Pyrophosphatase and carbonic anhydrase

Q2 : Biconcave shape of RBC helps by___________________?

A: Increasing flexibility B: Increasing surface area C: Carrying more Hemoglobin D: Passing easily through smaller capillaries

Q3 : Upstroke of action potential would lead to________________?

A: Net current in an outward direction B: Cell interior becomes more negative C: Cell interior becomes less negative D: None of the above

Q4 : Which of the following agents in not likely to be found in plasma ?

A: Thrombin B: Fibrinogen C: Prothrombin D: Calcium ion

Q5 : CO2 is transported in plasma as_____________?

A: Bicarbonate B: Carbomino compounds C: Dissolved D: CO

Q6 : True about nephron is_____________?

A: Na is absorbed actively in descending loop of Henle B: 60 to 70% of GFR is absorbed in proximal tubule C: Absorption of water occurs in ascending loop of Henle D: The filtrate reaching distal convoluted tubule is hypertonic with respect to surroundings

Q7 : Renin secretion is stimulated by all except_____________?

A: Cardiac failure B: Low Na+ in proximal tubule C: Low Na+ in proximal tubule D: High Na+ in proximal tubule

Q8 : Glucocorticoids have all the following actions except_______________?

A: Increase in blood glucose level B: Increase in protein catabolism C: Anti – insulin action in peripheral tissues D: Decrease in glucose uptake by the heart

Q9 : The effect which is seen due to decrease in serum calcium concentration is_______________?

A: Relaxation of muscle B: Excitability of the muscle C: Increase the renal absorption D: Depression of Nervous system

Q10 : Increase in partial pressure of CO2 leading to release of oxygen to the tissues is________________?

A: Haldane effect B: Bohr effect C: Breur effect D: Hamburger effect

Q11 : Pancreatic juice rich in water and electrolytes but poor in enzymes is secreted in response to ______________?

A: Pancreatozymine B: Cholecystokinin C: Secretin D: Proteins

Q12 : Which of the following is not a cause of secondary polycythemia ?

A: High Altitude B: Myeloproliferative changes C: Pheochromocytoma D: Cerebellar hemangioblastoma

Q13 : Within which parts of a gastric gland are chief cells located_____________?

A: Fundus B: Isthmus C: Neck D: Gastric pit

Q14 : Christmas factor is_____________?

A: PTA B: PTC C: VWA D: Prothrombin

Q15 : Increased blood viscosity and slow circulation causes______________?

A: RBC rouleax formation B: Increased plasma skimming C: Increased number of RBC in capillaries D: None

Q16 : Site of RBC formation in 20 years old healthy male is____________?

A: Flat bones B: Long bones C: Liver D: Yolk sac

Q17 : Hormone released during increased stress is_____________?

A: Cortisol B: Thyroxine C: Growth hormone D: Somatostatin

Q18 : Progesterone production in the ovary is primarily by______________?

A: Stroma B: Corpora albicans C: Corpora lutea D: Mature follicles

Q19 : Proximal renal tubule is most permeable to _______________?

A: Sodium B: Potassium C: Bicarbonate D: Ammonia

Q20 : Secretin does not cause _______________?

A: Bicarbonate secretion B: Augments the action of CCK C: Contraction of pyloric sphincter D: Gastric secretion increase

Q21 : In renal glycosuria, the renal threshold for glucose is_______________?

A: Low B: High C: Same D: Greatly increased

Q22 : FSH is secreted by_____________?

A: Chromophobes B: Basophils C: Acidophiles D: Theca intern cells

Q23 : Which of the following events DO NOT occur in rods in response to light_______________?

A: Structural changes in rhodopsin B: Activation of transducin C: Decreased intracellular cGMP D: Opening of Na+ channels

Q24 : Patient with anemia tends to have all, except________________?

A: Compensatory increase in cardiac output B: Increased incidence of heart murmurs C: Pallor of mucous membranes D: A low PO2 in arterial blood

Q25 : Of the following is a reflex mediated by vagus ?

A: Bile flow from liver B: Pancreatic secretion of bicarbonate C: Cephalic phase of gastric secretion D: Mucous secretion from the Brunner’s glands

Q26 : Plasma cells are constituent of_____________________?

A: Nervous tissue B: Muscular tissue C: Epithelial tissue D: Connective tissue

Q27 : Hormones FSH & LH of anterior pituitary gland acts on___________________?

A: Testis but not ovaries B: Ovaries but not testis C: Both Testis and ovaries D: Adrenal cortex

Q28 : What is the glomerular filtration rate ?

A: 100 ml/min B: 125 ml/min C: 150 ml/min D: 175 ml/min

Q29 : Adrenal gland has two parts; cortex and medulla. Which of the following is correct______________?

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

Q30 : In osmotic diuresis there is_______________?

A: Increase in renal blood flow B: Increase in glomerular filtration rate C: Increase in NaCl concentration in urine D: Decrease in reabsorption of Na Cl

Q31 : Oxytocin causes all accept_______________?

A: Lactogenesis B: Milk ejection C: Contraction of uterine muscle D: Myoepithelial cell contraction

Q32 : Bile acids are derived from_____________?

A: Bile salts B: Bile pigments C: A & B D: Cholesterol

Q33 : In peripheral tissues which of the following contains substance P______________?

A: Plasma cell B: Mast cell C: Nerve terminal D: Vascular endothelium

Q34 : The supraoptic nucleus of the hypothalamus is believed to control secretion of which of the following hormones ?

A: Antidiuretic hormone B: Oxytocin C: Growth hormone D: Adreno corticotrophic hormone

Q35 : The approximate amount of air left in the lungs after maximal forced expiration in a normal woman______________?

A: 0.5 L B: 2.0 L C: 1.1 L D: 1.8 L

Q36 : The hormone , which stimulates uterus contraction and lets down milk, is_____________?

A: Progesterone B: Prolactin C: Prostaglandin D: Oxytocin

Q37 : Skeletal muscles______________?

A: Contracts when calcium is taken up by sarcoplasmic reticulum B: Contracts when actin and myosin filaments shorten C: Contraction is initiated by calcium binding to troponin D: Contraction is initiated by calcium binding to tropomyosin

Q38 : The part of nephron” least permeable to water” is______________?

A: Proximal tubule B: Descending limb of loop of Henle C: Ascending limb of loop of Henle D: Collecting tubule

Q39 : All the following hormones are secreted by adrenal cortex except_______________?

A: Estriol B: Cortisol C: Corticosterone D: Aldosterone

Q40 : Valve of Hasner is present at________________?

A: Stensons duct B: common bile duct C: Naso lacrimal duct D: D. maxillary Sinus

Q41 : To measure renal plasma clearance compound should be_________________?

A: <70,000 Mol.wt B: Bound to plasma protein C: Secreted by the tubules D: Completely filtered by glomerulus

Q42 : Contraceptive action of combined pill is mainly due to_______________?

A: Decrease in tubal motility B: Prevents the fertilization C: Prevents the implantation of fertilized egg D: Inhibits ovulation

Q43 : Amount of glucose absorbed in proximal convoluted tubule_______________?

A: 100% B: 0% C: 60% D: 50%

Q44 : Which of the following hormones act via cAMP ?

A: Insulin B: Parathormone C: Vasopressin D: Adrenalin

Q45 : Blood coagulation is impaired in___________?

A: Tetany B: Hyperparathyrodism C: Rickets D: None

Q46 : Normal intrapleural pressure during the start of inspiration is _________ mm of Hg?

A: -2 B: -5 C: 0 D: -7

Q47 : AB blood group antigen are known as ________ factors?

A: Duffy B: Landsteiner C: Rhesus D: Lutheran

Q48 : The renal blood flow in (in ml/mt) is______________?

A: 250 B: 800 C: 1260 D: 1500

Q49 : Excess of cortisol causes______________?

A: Conn’s syndrome B: Cushing ‘s syndrome C: Acromegaly D: Diabetes insipidus

Q50 : Bone metabolism is controlled by ____________?

A: Vit – D & Calcium B: Parathormone C: Calcitonin D: All of the above

Q51 : Citrate is a useful anticoagulant because of its ability to_____________?

A: Buffer basic groups of coagulation factors B: Bind factor XII C: Bind vitamin K D: Chelate calcium

Q52 : Inhibit b hormone has effect on_______________?

A: Sertoli cells B: FSH C: Seminiferous tubules D: Spermatogenesis

Q53 : Differential white blood cell counts in the laboratory are useful in the diagnosis of_______________?

A: Anemia B: Eosinophilia C: Vitamin deficiency D: Spherocytosis

Q54 : In children, hypothyroidism causes_____________?

A: Acromegaly B: Cretinism C: Gigantism D: Myxodedema

Q55 : Iron is stored in_______________?

A: RBC B: Reticule endothelial system C: Plasma D: All

Q56 : Decreased basal metabolic rate is seen in_______________?

A: Obesity B: Hyperthyroidism C: Feeding D: Exercise

Q57 : Pancreas produce_____________?

A: Pepsinogen B: Chymotrypsinogen C: Hydrochloric acid D: All of the above

Q58 : The number of muscle fibers in a motor unit are least in______________?

A: Laryngeal muscles B: Pharyngeal muscles C: Muscles of middle ear D: Extraocular muscles

Q59 : Major basic protein is an important constituent of which leucocyte_____________?

A: Neutrophil B: Eosinophil C: Basophil D: Lymphocyte

Q60 : Which one of the following is a precursor of both gonadal and adrenocortical hormones_____________?

A: Progesterone B: Cortisol C: Testosterone D: Corticosterone

Q61 : A phaeochromocytoma is a tumour of the____________?

A: Adrenal cortex B: Parathyroids C: Pituitary D: None of the above

Q62 : Removal of parathyroid gland produces the following changes EXCEPT_________________?

A: Decline plasma calcium level B: Decrease in plasma phosphate level C: Neuromuscular hyperexcitability D: hypo calcemic tetany

Q63 : Posterior pituitary insufficiency leads to______________?

A: Diabetes mellitus B: Diabetes insipidus C: Dwarfism D: Cretinism

Q64 : Arterial PO2 is reduced in_____________?

A: Anemia B: KCN poisoning C: Pulmonary hypoventilation D: CO poisoning

Q65 : Decreased MCHC is found in_____________?

A: Microcytic hypochromic anemia B: Megaloblastic anemia C: Sideroblastic anemia D: Vit B12 deficiency

Q66 : Bronchial circulation is associated with__________________?

A: Air conditioning B: Drug absorption C: Gaseous exchange D: Reserve volume

Q67 : Cholagogues are the substances, which cause______________?

A: Contraction of the gallbladder B: Increase concentration of bile C: Increase secretion of bile D: Favours acidification of bile

Q68 : The decreased phosphate level seen in hyper parathyroidism is due to ________________?

A: Decreased intestinal phosphate absorption B: Increased calcium excretion C: Decreased renal phosphate absorption D: Increased loss of phosphate in urine

Q69 : The hormone whose deficiency causes diabetes insipidus is released from which nucleus of pituitary ________________?

A: Supraoptic B: Pre optic C: Suprachiasmatic D: Paraventricular

Q70 : Energy expenditure during normal breathing____________?

A: 25% – 50% of total energy spent B: 50% -75% of total energy spent C: 15% – 20% of total energy spent D: 2% – 3% of total energy spent

Q71 : Glucocorticoids decrease inflammatory reaction by reducing_______________?

A: Activity of histamine B: Release of histamine C: Fibroblastic activity D: Neutrophils

Q72 : The renal threshold for glucose is_______________?

A: 180 mg / dl B: 100 mg/dl C: 120 mg/dl D: 80 mg/dl

Q73 : The duodenum secretes a hormone which has following effects except_______________?

A: Causes copious pancreatic juice rich in bicarbonate and poor in enzymes B: Increases gastric motility C: Causes gall bladder to contract and sphincter of oddi to relax D: Leads to meager flow of pancreatic juice rich in enzymes

Q74 : Acromegaly is a disorder of____________?

A: Excess growth hormone secreting B: Excess thyroxine secretion C: Excess ACTH secretion D: Excess FSH secretion

Q75 : Maximum absorption of bile occurs at_____________?

A: Jejunum B: Duodenum C: Ileum D: Colon

Q76 : Skeletal muscles_____________?

A: Contracts when calcium is taken up by sarcoplasmic reticulum B: Contracts when actin and myosin filaments shorten C: Contraction is initiated by calcium binding to troponin D: Contraction is initiated by calcium binding to tropomyosin

Q77 : Cephalic phase of gastric secretion is mediated by ______________?

A: Neuro hormones B: Vagus C: Hormones D: Gastric

Q78 : Non true regarding Na/K pump is______________?

A: Pumps Na against a gradient B: 5 Na+ exchanged for 2K+ C: Increase in intracellular Na D: Hypocalcemia inhibits the pump

Q79 : The transport of CO is diffusion limited because_______________?

A: Bind avidly with Hb B: Partial pressure of CO is less C: CO is less absorbed in water D: Alveolar membrane is less permeable

Q80 : Which of the following is called hunger hormone______________?

A: Epinephrine B: Glucagon C: Pituitary D: Thyroxine

Q81 : Glucose tolerance test is usually done to assess_____________?

A: Acute Pancreatitis B: Carcinoma of Head of Pancreas C: Acinar Function of the Pancreas D: Endocrine Dysfunction of Pancreas

Q82 : CO2 is carried in the blood________________?

A: In combination with hemoglobin B: In physical solution in plasma C: In combination with plasma proteins D: All of the above

Q83 : Hypercalcemia associated with malignancy is most often mediated by _____________?

A: Parathyroid hormone ( PTH) B: Parathyroid hormone related protein (PTHrP) C: Interleukin – 6 ( IL- 6) D: Calcitonin

Q84 : Meiotic division of male germ cells commence_______________?

A: During intra – uterine life B: just before birth C: by around 6 years after birth D: by around 16 years

Q85 : Oxygen dissociation cure is shifted to the right in all except_____________?

A: Fall in pH B: Rise in temperature C: Increase of 2, 3 3 DPG D: HbF

Q86 : Which of the following is not useful for coagulation______________?

A: Plasmin B: Thrombin C: Calcium D: Fibrin

Q87 : Embryonic hemoglobin is composed of________________?

A: Gamma and beta B: Epsilon and gamma C: Alpha and beta D: Gamma and alpha

Q88 : Which of these following is not an effect of insulin ?

A: Decreased gluconeogenesis B: Increased glycogenolysis C: Increased transport of glucose into cells D: Induction of lipoprotein lipase

Q89 : The function common to neutrophils, monocytes & macrophages is______________?

A: Immune response B: Phagocytosis C: Liberation of histamine D: Destruction of old erythrocytes

Q90 : Hemostasis depends upon all the following, EXCEPT_______________?

A: Calcium B: Prothrombin C: Vitamin B D: Vitamin K

Q91 : Test for estimating kidney function is_______________?

A: Serum creatinine B: Serum phosphatase C: Inulin test D: Insulin test

Q92 : Iodine is primarily important in the biochemical synthesis of______________?

A: ACTH B: Thyroxine C: Adrenaline D: Calcitonin

Q93 : In a blood sample antiserum A and antiserum B and Rh+ ve factor is added. No agglutination is seen. This is_______________?

A: O group and Rh+ ve B: O group and Rh- ve C: AB group and Rh+ ve D: AB group and Rh – ve

Q94 : tidal volume in adult is_____________?

A: 125 ml B: 500 ml C: 1500 ml D: 2200 ml

Q95 : In an isotonic contraction of the muscle________________?

A: The muscle moves a load through a distance B: The muscle is not able to move the load C: The latent period of contraction is shorter than isometric contraction D: The length of muscle is increased

Q96 : Menopausal hormonal relations are______________?

A: T3 more potent than T4 B: T4 binds to prealbumin C: Absorption of T4 is more than T3 D: Concentration of T4 is more than T3

Q97 : What effect does hyperventilation have on the oxygen binding affinity of hemoglobin ?

A: P50 and oxygen affinity decrease B: P 50 and oxygen affinity increase C: P 50 decreases and the oxygen affinity increases D: P50 increase and the oxygen affinity decreases

Q98 : Functional unit of kidney is______________?

A: Nephron B: Glomerulus C: Collecting ducts D: Loop of Henle

Q99 : The work of breathing__________________?

A: is inversely related to lung compliance B: remains constant during exercise C: is not affected by respiratory D: decreased in lying posture

Q100 : Histamine stimulate the secretion of_______________?

A: Gastrin by stomach B: Pancreatic enzymes C: HCL by stomach D: Amylase by salivary gland

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