Kerala PGMEE February 2009 Questions and answers Discussion : Physiology

Q NO : 1 Ion mostly concentrated intracellularly is

a. Na+
b. Ca2+
c. Mg2+
d. Cl-

Q No : 2 On acclimatizing to a new height the pH of the blood is maintained by

a. By retention of HCO3- by kidneys.
b. By excretion of HCO3-
c.
d.

Q3 : About oxygen - Hemoglobin interaction all are true except :

a. ? Hb bound with O2 is a strong base .. not sure of the choice
b. O2 binding depends upon the nature of globin chains in Hb.
c. Dissociation of OxyHb depends on HCO3- ions in blood
d. " " " on the pH of blood

Q4 : Regarding acid secretion which of the following is true

a. H+ is secreted by the Chief cells
b. Secreted in part by a number of H+pumps
c. CAI increases H+ ion secretion.
d. ?

Q5: Basophils secrete all except -

a) Histamine
b) Major Basic Protein (MBP)
c) Heparin
d) Bradykinin

Q6 : Amount of CHO on plasma membrane ?

a) 5 %
b) 10%
c) 15%
d)20%

Q7 : If the alvelolar ventillation is halved, then PaCo2 will

a) doubled immediately
b) halved immediately
c) doubled over several minutes
d) halved over several minutes

Q8 : pO2 of air at atmospheric pressure (760mm Hg) is
a) 141 mm Hg
b) 160 mm Hg ... 760 x 21/100 ~ 160
c)
d)