Excitable tissue physiology MCQs for medical student
1. Contractile protein in skeletal muscle includes
a) Actine
b) Myosin
c) Troponin
d) Tropomyosin
e) Actinin
2. An action potential of a nerve fiber is shown in the picture .During which of the phases is / are the Na channels open
a) 1
b) 2
c) 3
d) 4
e) 5
3. Which of following precedes release of acetylholine at the neuromuscular junction
a) Action potential along a nerve fiber
b) Ca +2 entry into pre-synaptic membrane
c) Activity of acetylcholine esterase
d) Depolarization of the nerve membrane
e) Opening of Na+ channels
4. The acetylcholine receptor at the neuromuscular junction
a) Is described as a muscarinic receptor
b) Combines irreversibly with acetylcholine
c) Is made up of subunits
d) Is found at the motor end plate
e) Is a serpentine receptor
Answers
1.
a) T
b) T
c) T
d) T
e) F
2.
a) F
b) T
c) T
d) T
e) F
3.
a) T
b) T
c) F
d) T
e) F
4.
a) F
b) F
c) T
d) T
e) F
Labels: Excitable tissue, Excitable tissue MCQs, Physiology MCQ
