14 - AIIMS may 2005 physiology mcqs with answers part 3

10q: there is a mutation of gene coding for the ryanodine receptors in malignant hyperthermia . which of the following statements best explains the increased heat production in malignant hyperthermia ?

a. increased muscle metabolism by excess of calcium ions
b. thermic effect of food
c. increased sympathetic discharge
d. mitochondrial thermogenesis

answer a. increased muscle metabolism by excess of calcium ions

11q: which of the following conditions lead to tissue hypoxia without alteration of oxygen content of blood ?

a. CO poisoning
b. Meth Hb
c. Cyanide poisoning
d. Respiratory acidosis

answer c. cyanide poisoning

12q: which of the following hormones is an example of peptide hormone ?

a. parathormone
b. adrenaline
c. cortisol
d. thyroxine

answer a. parathormone

13q: which of the following methods is not used for measurement of body fluid volumes?

a. antipyrin for total body water
b. inulin for extracellular fluid
c. evan’s blue for plasma volume
d. I 125 albumin for blood volume

answer d. Iodine 125 albumin for blood volume

14q: which of the following is not a transportor binding protein ?

a. erythropoietin
b. ceruloplasmin
c. lactoferrin
d. transferrin

answer a. erythropoietin

13 - AIIMS may 2005 physiology mcqs with answers part 2

6q: all of the following enzymes are active with in a cell except?

a. trypsin
b. fumarase
c. exokinase
d. alcohol dehydrogenase

answer a. trypsin

7q: exercise is also prescribed as an adjuvant treatment for depression . most probably this acts by ?

a. increasing pulse pressure
b. improving hemodynamics
c. raising endorphin levels
d. inducing good sleep

answer c. raising endorphin levels

8q: the intrapleural pressure is negative both during inspiration and expiration because ?

a. intrapulmonary pressure is always negative
b. thoracic cage and lungs are elastic structures
c. transpulmonary pressure determines the negativity
d. surfactant prevents the lungs from collapse

answer b. thoracic cage and lungs are elastic structures

9q: the velocity of blood is maximum in the ?

a. large veins
b. small veins
c. venules
d. capillaries

answer a. large veins

12 - AIIMS may 2005 physiology mcqs with answers part 1

1q: group A nerve fibers are more susceptible to ?

a. pressure
b. hypoxia
c. local anaesthetics
d. temperature

answer a. pressure

2q: in a fetus the insulin secretion begins by ?

a. 3 months
b. 5 months
c. 7 months
d. 9 months

answer a . 3 months

3q: phantom limb sensations are best described by ?

a. weber Fechner law
b. power law
c. bell magendie law
d. law of projection

answer d. law of projection

4q: synaptic potential can be recorded by ?

a. patch clamp technique
b. voltage clamp technique
c. microelectrode
d. EEG

answer d. EEG

5q: the ECG of 40 year old male was recorded using standard bipolar limb leads . the sum of voltages of the three standard leads was found to be 5 millivolts. This indicates ?

a. a normal heart
b. right ventricular hypertrophy
c. left ventricular hypertrophy
d. increased cardiac muscle mass

answer d. increased cardiac muscle mass