Mcq Subject: Physiology
cGMP is second messenger for which of the following harmone
A. Atrial natriuretic factor
B. Nitric acid
C. Both of the above
D. None of the above
View DescriptionWhich among the following statement regarding skeletal and cardiac muscle is false
A. Both require calcium for excitation contraction coupling
B. The excitation contraction coupling of skeletal muscle is independent of extracellular calcium
C. Both have graded contraction
D. Plateau phase is seen in action potential of cardiac muscle. (Repeat, 09)
View DescriptionFollowing changes are seen during capacitation of a sperms except ?
A. Increased permeability to calcium
B. Decreased permeability to calcium
C. Removal of cholesterol from acrosome
D. Increased motility
View DescriptionMacula densa in kidney is located in relation to –
A. PCT
B. DCT
C. Afferent aeriole
D. Efferent aeriole
View DescriptionActive agent of cannabis resemble which endogenous compound
A. Endorphin
B. Endomorphins
C. Anandamine
D. Enkaphalin
View DescriptionWhich of the following is most dependent on vasovagal reflex?
A. Chewing
B. Swallowing
C. Receptive relaxation
D. Segmentation of intestine
View DescriptionFollowing acute failure of the left ventricle is the hea is man, pulmonary edema generally begins to appear when left atrial pressure approaches
A. 7 mm Hg
B. I5 mm Hg
C. 20 mm Hg
D. 30 mm Hg
View DescriptionThe cyclical flexion and extension motions of a leg during walking result from activity at which level of the nervous system?
A. Cerebral coex
B. Cerebellum
C. Globus pallidus
D. Spinal cord
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