PHYSIOLOGY QUESTIONS

PHYSIOLOGY

1.Hartmann’s solution contains no: 
A. Na
B. Ca
C. Mg
D. Lactate
ANS C
2.All of the following histamine effects are mediated by H2- receptors EXCEPT: 
A. Vasodilatation 
B. Bronchoconstriction 
C. Gastric acid secretion 
D. Tachycardia
ANS B
3.In a patient with diabetic ketoacidosis, the following are true except: 
A. There is decreased PaCO2
B. There is decreased concentration of H+ intracellularly 
C. Renal excretion of titratable acids will be increased 
D. There is increased synthesis of bicarbonate 
ANS B
4.Which biologically active substances are partially degraded by the lung? 
A. Surfactant 
B. Histamine 
C. Angiotensin 
D. Noradrenaline
ANS D
5.Changes with raised intracerebral pressure (ICP): 
A. BP increase, HR decrease, RR decrease 
B. BP increase, HR increase, RR decrease 
C. BP decrease, HR increase, RR increase 
D. BP increase, HR decrease, RR increase 
E. No change in BP or HR
ANS A
6.The hepatic artery : portal vein blood flow ratio is: 
A. 1 : 10 
B. 3 : 1 
C. 2 : 1 
D. 1 : 6 
E. 1 : 3
ANS E
7.The highest oxygen extraction is found in the: 
A. Carotid body 
B. Heart 
C. Kidney 
D. Brain 
ANS B
8.Which part of heart has fastest conduction? 
A. AV node  
B. His bundle 
C. Purkinje fibres 
D. SA node  
ANS C
9. Baroreceptors located in all EXCEPT: 
A. Carotid sinus 
B. Carotid body 
C. Right atrium 
D. Aortic arch 
E. Large veins 
ANS B
10.Significant tubular reabsorption occurs with: 
A. Phosphate 
B. Creatinine 
C. Urea 
D. Sulphate 
E. All of the above
ANS A

11. Which of the following is NOT a function of the lungs?
A. Metabolism
B. Serves as a reservoir of blood for the left ventricle.
C. It is a filter to protect the systemic vasculature
D. Facilitates the exchange of O2 and CO2 between air and blood.
E. All of the above are true.

ans E

12. Which of the following is in the correct path of CO2 from the tissue to the atmosphere?
A. Reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, H+ combines with imidazole side chain of hemoglobin, carried back to lungs as HHb+ and HCO3-, reverse reaction forms CO2.
B. O2 is metabolized to CO2, reaction with H2O to make H2CO3, H2CO3 combines with imidazole side chain of hemoglobin, H2CO3Hb+ is carried back to the lungs, reverse reaction forms CO2.
C. Reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, HCO3- combines with imidazole side chain of hemoglobin, carried back to the lungs as HCO3-Hb+ and H+, reverse reaction forms CO2.
D. O2 is metabolized to CO2, reaction with H2O to make H2CO3, dissociation to H+ and HCO3-, carried back to lungs in this form, reverse reaction forms CO2.

ANS A

13.Calculate PAO2 for a person at sea level for R = 0.82 and PACO2 = 40 Torr.

A. 110 Torr.
B. 95 Torr
C. 80 Torr
D. 101 Torr

ANS D

14.Mechanism of development of edema in nephrotic syndrome is?

A. Sodium and water retention
B. Loss of proteins
C. Hyperlipidemia
D. Increased venous pressure

ans: B.

15. Chemotaxis – Main feature is

a) Unidirectional locomotion of neutrophils
b) Increase in phagocytosis
c) Increased random motion of neutrophils
d) Increased adhesiveness to intima

ANS A

16. Appetite is stimulated by A/E
a) Agouti related peptide
b) Melanocyte concentrating hormone
c) Melanocyte stimulating hormone
d) Neuropeptide Y

ANS C

17. Capacitation occurs in
a) Uterus
b) Seminal vesicle
c) Epididymis
d) Vas deferens

ANS A

18. The main cause of increased blood flow to exercising muscles is
a) Raised blood pressure
b) Vasodilatation due to local metabolites
c) Increased sympathetic discharge to peripheral vessels
d) Increased heart rate

ANS B

19. Intrinsic factor of Castle is secreted by
a) Chief cells
b) Parietal cells
c) Mucus cells
d) B cells

ANS B

20. Somatomedin mediates
a) Deposition of chondroitin sulphate
b) Lipolysis
c) Gluconeogenesis
d) Decreased rate of glucose uptake by cells

ANS A

21. Hyperaldosteronism associated with all except
a) Hypernatremia
b) Hypokalemia
c) Hypertension
d) Metabolic acidosis

ANS D

22. Spinocerebellar tract – Function is
a) Equilibrium
b) Vision
c) Initiation & planning of movements
d) Smoothens & co-ordinates movement

ANS D

EACH OF YOU WHO VISITED PLEASE SHARE ONE QUESTION IN PHYSIOLOGY IN COMMENT BOX BELOW.WE WILL UPLOAD MORE QUESTIONS TOMORROW