MCQ on muscle physiology
01.Which of the following are true
 |
| Image from wikipedia |
a) Aα -pain sensory
b) Aγ-give motor supply to the muscle spindle
c) Ia –motor supply to the extrafusal fibres
d) Ib – sensory to golgi tendon organ
e) C- faster conduction velocity
Click For answer here
02. Acetylcholine is neurotransmitter at
a) Pregaglionic sympathetic ending
b) Postganglionic Parasympathetic neuron of cardiac muscle
c) Postganglionic sympathetic neuron of sweat glands
d) Postganglionic sympathetic neuron of adrenal medulla
e) Neuromuscular junction at skeletal muscle
Click For answer here
03. Which of the following is/are competitive blockers of neuromuscular junction?
a). D – tubocurarine
b). Neostigmine
c). Botulinum toxin
d). Nicotine
e). Methacholine
Click For answer here
a). Shows no plateau phase in the action potential
b). Can be tetanized
c). Spontaneous depolarization does not take place
d). Does not have intercalated discs
e). All of above
Click For answer here
a). Non depolarizing muscle relaxant
b). Depolarizing muscle relaxant
c). Alpha bungarotoxin
d). Botulinum toxin
e). Antibodies in myasthenia gravis
Click For answer here
a)Myosin
b)Actin
c)Actinin
d)Tropomysin
e)Desmin
Click For answer here
a)It is electrogenic
b)It can be inhibited by cardiac glycoside
c)Do not contribute to the resting membrane potential
d)Maintain a low Na+ concentration inside the cell
e)It is universally present in all living cells
Click For answer here
a)Low amplitude action potential
b)Reduction of conduction velocity
c)Increase in the effective membrane resistance
d)Reduction in the nerve diameter
e)Failure of conduction of nerve impulse
Click For answer here