PHYSIOLOGY MCQs


1. which statement is false regarding muscle characteristic…
a. Excitability
b. Contractibility
c. Extensibility
d. Elasticity
e. Conductibility ✅


2. Which of the following is not released by the anterior pituitary gland?
a. Anti-diuretic Gland✅
b. Follicle stimulating hormone
c. Luteinizing hormone
d. Prolactin
e. Thyroid stimulating hormones


3. The “thick” muscle filament is composed of
a. Actine
b. Myosin✅
c. sarcomeres
d. Troponin
e. Z-Lines


4. Hormone are chemical messenger secreted by the
a. Endocrien organ
b. Endocrine and exocrine organ ✅
c. Exocrine organ
d. Liver
e. Kidney


5. Which of the one is Best Definition of Hemeostasis…
a. Osmoregulation of body
b. Control of Temperature
c. Independence of the external environment
d. Is essential for the normal functioning of the cell
e. Maintenance of constancy of internal environment ✅


6. Type of major salivary glands are
a) 3 ✅
b) 4
c) 5
d) 6


7. Secretions from Parotid Glands glands are emptied into the oral cavity by
a) Stensen duct.✅
b) Wharton duct.
c) Duct of ravines.
d) Barthilon duct.


8. In the sublingual glands saliva is poured through small ducts that are open on small papillae
a) Beneath the tongue✅.
b) Beneath the teeth.
c) Inside the cheeks
d) At the upper molar tooths.


9. Excess calcium is secreted in saliva during.
a) Hyperparathyroidism✅
b) Nephritis
c) Diabetes
d) Tonsillitis


10. An autoimmune disorder in which the immune cells destroy exocrine glands such as lacrimal glands and salivary glands is
a) Sjögren Syndrome ✅
b) Xerostomia
c) Chorda Tympani Syndrome
d) Autoimmune syndrome


Surface acting material or agent that is responsible for lowering the surface tension of a fluid.
a) Elastic property of lung
b) Surface tension
c) Intraplural pressure ✅
d) Extra plural pressure
e) Surfactant


11. The pressure existing in pleural cavity between the visceral and parietal layers of pleura is
a) Surface tension
b) Surfactant
c) Intraplural pressure ✅
d) Plural pressure


12. Normal atmospheric pressure
a) 760 cm H2O
b) 780 mm H2O
c) 760 nn Hg
d) 760mm Hg✅


13. Intraplural pressure is always
a) Positive
b) Depends upon atmospheric
c) Negative ✅
d) Zero


14. In valsalva maneuver intraplural pressure is
a) Positive✅
b) Negative
c) Zero
d) Not accessible


15. Pressure exsiting in the alveoli of the lungs is called
a) Intra alveolar pressure
b) Intra pulmonary pressure
c) Plural pressure
d) A and B ✅


16. Ability of lung and thorax to expand is called
a) Elasticity
b) Compliance✅
c) Compatibility
d) Friction


17. Ability of thorax and lungs measure during breathing is called.
a) Dynamic compliance ✅
b) Static compliance
c) Abnormal compliance
d) Normal compliance


18. In old age compliance of lungs
a) Decrease
b) Increase ✅
c) Remain unchanged
d) Become zero


19. The volume of air breathed in and out of lung in a single normal quiet respiration
a) Respiration
b) Residual volume
c) Tidal volume ✅
d) Lung volume


20. Normal tidal volume is
a) 760ml
b) 550ml
c) 600ml
d) 500ml ✅


 

21. Vital capacity of lung can b find out by
a) VC = RV + ERV
b) VC = IRV + TV + ERV✅
c) VC = IRV + RV + ERV
d) VC = IRV + TV + RV


22. The maximum amount of gases that can be exhaled after a full deep inspiration is called
a) Expiratory reserve volume
b) Vital capacity ✅
c) Total lung capacity
d) Functional residual capacity


23. Decrease in oxygen affinity of Hb when the pH of blood tissue fall is
a) Bohr effect ✅
b) Halden effect
c) Hamburger effect
d) Hawthorn effect


24. In oxygen hemoglobin dissociation curve if affinity of oxygen decrease, cure will shift towords
a) Left
b) Right ✅
c) Remain unchanged
d) Zero


25. Glucagon is secreted by _____ islets of Langerhans
a) Alpha cells ✅
b) Beta cells
c) Delta cells
d) PP cells


26. Hyperkalemia causes.
a) Muscle weakness
b) Insomnia
c) Cardiac toxicity✅
d) Headache


27. Glucocorticoid has permission action on
a) Gluconeogenesis effect of glucagon.
b) Carbohydrate metabolism by insulin
c) Calorigenic effect of glucagon ✅
d) Inhibition of secretion of gastric juice by glucagon


28. Which vitamin activated in kidney
a) Vitamin A
b) Vitamin B3
c) Vitamin K
d) Vitamin D ✅


29. The pH of extracellular fluid is.
a) 7.6
b) 7.2
c) 7.0
d) 6.9
e) 7.4 ✅


30. Which one of the following in an example of negative feedback mechanism?
a) Secretion of thyroxin✅
b) Milk ejection reflex
c) Coagulation of blood
d) Parturition


 

31. Juxtacrine messenger involves which of following substance?
a) Insuline
b) Histamine ✅
c) Leukotrines
d) Dopamine


32. Receptor of adrenal modularly hormones are situated at
a) Cytoplasm
b) Cell membrane✅
c) Nucleoli
d) Nucleus


33. Catecholamine acts through
a) By altering permeability of cell membrane
b) By altering permeability of nuclear membrane
c) By activating intracellular enzyme✅
d) By acting on genes


34. Growth hormones effects increase the release of which hormones
a) TSH
b) Oxytoxin
c) Insulin ✅
d) Calcitonin


35. Which of following action is carried out by thyroxin?
a) Reduce the glucose uptake by cell.
b) Increase glycogen production
c) Accelerate gluconeogenesis✅
d) Increase peripheral utilization of glucose.


36. The primary funcation of Juxtaglomerular apparatus is.
a) Formation of urine.
b) Secreation of hormones✅
c) Re-absorption of sodium
d) Uric acid formation.


37. Angiotensin II causes the constriction of
a) Large blood vessels
b) Small blood vessels
c) Arterioles ✅
d) Capillaries


38. Hypertrophy is caused by
a) Angiotensis II ✅
b) Aldosterone
c) Angiotensin
d) Prostaglandin


39. Loup diuretic inhibit electrolyte re-absorption form
a) Thin descending segment
b) Thick descending segment
c) Hair pin bends
d) Thin ascending segments
e) Thick ascending segments✅


40. Increase in urine volume indicates
a) Carbohydrate catabolism
b) Increase in lipolytic activity
c) Catabolism of proteins✅
d) Diabetic mellitus


 

41. Colour of skin depends upon
a) Melanin ✅
b) Dermis
c) Epidermis
d) Keratin
e) Hypodermis


42. Enzyme Collagenase is responsible for
a) Colour of skin
b) Production of melanin
c) Wound healing✅
d) Both a & b


Lysosome also called
a) Collecting system
b) Garbage system ✅
c) Synthetic system
d) A and C


43. Largest organ of body is
a) Heart
b) Intestine
c) Skin ✅
d) Hairs


44. Acceleration of thyroxin
a) Decrease metabolic rate
b) Increase metabolic✅
c) Do not effect metabolic rate
d) Produce ADP + iP


45. Control of skeletal muscle is
a) Only neurogenic✅
b) Myogenic
c) Neurogenic and myogenic
d) All of above


46. Neuromuscular junction is a juncation between
a) Nerve fiber and muscle fiber✅
b) Nerve fiber and parathyroid
c) Nerve fiber and thyroid
d) Nerve fiber and skin directly


47. which of following enzyme that breakdown a neurotransmitter
a) Serotonin
b) Dopamine
c) Acetylcholinestrase ✅
d) Acetylcholine


48. A rapid rise in depolarization and rapid fall in repolarization are together called
a) Overshoot
b) Spike potential ✅
c) Latent period
d) Action potential


49. Red muscle also called
a) slow muscle
b) slow twitch muscle
c) fast muscle
d) fast twitch muscle
e) A and B ✅


50. Hormone necessary for spermatogenesis at stage of maturation is
a) Testosterone, estrogen
b) Testosterone, growth hormone ✅
c) Follicle-stimulating hormone, growth hormone
d) Estrogen


 

51. Testes secretes male sex hormones, which are collectively called
a) Androgen
b) Growth hormone
c) Testosterone ✅
d) FSH


52. From abdominal cavity, ovum enter fallopian tube through the
a) Fimbriated end✅
b) Vagina
c) Uterus
d) B and C


53. During parturition the irritation of uterine muscle during initial contraction leads to further reflex contractions. It is called
a) Reflex mechanism
b) Negative feedback mechanism
c) Positive feedback mechanism✅
d) A and C


54. The endocrine system plays an important role homeostasis and control of various other activity in the body through.
a) Nervous
b) Hormones ✅
c) Pancreas
d) Liver


55. Vitamin B12 is an important maturation factor during erythropoiesis, absence of intrinsic factor in gastric juice causes deficiency of vitamin B12, leading to
a) Pernicious anemia✅
b) Sickle cell anemia
c) Aplastic anemia
d) Polycythemia vera


56. Pepsinogen activates into pepsin through
a) HYDROCHLORIC ACID✅.
b) Gastric amylase
c) Gastric peptidase
d) Trpsinogen


57. ZollingerEllison syndrome is characterized by
a) excess hydrochloric acid✅
b) inhibit secreation of hydrochloric acid
c) gastric atrophy
d) gastritis


58. An autoimmune disorder characterized by the damage of mucosa and atrophy of villi in small intestine, resulting in impaired digestion and absorption is
a) Celiac disease✅.
b) Tropical sprue
c) Crohn,s disease
d) Malabsorption


59. In the mouth enzymes involved in the digestion of carbohydratesare known as
a) amylolytic enzymes✅
b) Gastric amylase
c) Lypolytic enzyme
d) Lingual lipase


60. During digestion of protein in small intestine succus intericus act on large polpeptides through amino peptidases and convert them into
a) Dipeptides
b) Tripeptides
c) Amino acid ✅
d) Maltose


 

61. In digestion of lipid gastric juice act on triglycerides through gastric lipase and converted them into
a) Mono glycerides fatty acid
b) Fatty acid glycerol ✅
c) Lysophospholipids
d) Phosphocholine


62. Vitamin which is synthesized in skin by the action of ultraviolet rays from sun is
a) A
b) K
c) D3✅
d) E


63. Skin regulates water balance and electrolyte balance by excreting water and salts through
a) Kidney
b) Sebaceous gland
c) Sweat gland✅
d) Absorption


64. Centrosome are responsible for the
a) Movement of chromosomes during cell division✅
b) ATP production
c) Synthesis of protein
d) Cellular movment


65. Pleural space contains a thin film of serous fluid which is secreted by the visceral layer of the pleura.
a) intrapleural fluid✅
b) extraplural fluid
c) serous fluid
d) Visceral fluid.


66. Structural and functional unit of lung is.
a) Plural unit
b) Respiratory unit
c) Alveoli ✅
d) Bronchi


67. Which one of the following is not non-respiratory function of respiratory tract?
a) Olfaction
b) Vocalization
c) Maintenance of water balance
d) Exchange of gases


68. Plural cavity expands with accumulation of air is called
a) Hydrothorax
b) Hemothorax
c) Pneumothorax✅
d) Pyothorax


69. A modified respiratory process characterized by forced expiration, and caused by irritation of nasal mucous membrane is called
a) Cough reflex
b) Sneezing reflex ✅
c) Respiratory reflex
d) Expiratory reflex


70. A modified respiratory process characterized by forced expiration and caused by irritation of respiratory tract is called
a) Sneezing reflex
b) Expiratory reflex
c) Cough reflex✅
d) Respiratory reflex


 

   
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