Muscles And Neuromusclar Junction Mcqs
Q.1: Calcium ions triggers muscle contraction by binding to ___________________?K
A. Actin
B. Myosin
C. Troponin
D. Tropomyosin
Q.2: Contractile element in myofibril is_______________?3
A. H band
B. Sarcoplasm
C. Sarcomere
D. A line
Q.3: The following electrodes are used to detect the muscle activity without pain_________________?^
A. Surface electrode
B. Round electrode
C. Hook electrode
D. Needle electrode
Q.4: The study of the electrical activity of the muscle is_______________?E
A. EEG
B. EMG
C. Venn diagram
D. ECG
Q.5: In an isotonic contraction of the muscle________________?9
A. The muscle moves a load through a distance*
B. The muscle is not able to move the load'
C. The latent period of contraction is shorter than isometric contractionF
D. The length of muscle is increased!
Q.6: Tendon (or) ligament is attached to a bone through ____________?@
A. Tomes fibers
B. Interstitial fibers
C. Sharpeys fibers
D. Haversian fibers
Q.7: In myasthenia gravis_______________?$
A. there is lack of acetyl choline
B. Lack of acetyl choline receptors
C. There is isometric contraction
D. Muscles are rigid and tough
Q.8: The neuromuscular transmitter released at neuromuscular junction is_______________?S
A. Dopamine
B. Epinephrine
C. Nor epinephrine
D. Acetylcholine
Q.9: A motor unit is made up of______________?)
A. A flexor muscle and an extensor muscle&
B. A single skeletal muscle and all the motor peurons that supply itA
C. A single motor neuron and all the muscle fibers it innervates=
D. All the motor neurons in which response are observed after maximal stimulation of a single sensory nerveh
Q.10: Non true regarding Na/K pump is______________?.
A. Pumps Na against a gradient
B. 5 Na+ exchanged for 2K+
C. Increase in intracellular Na
D. Hypocalcemia inhibits the pump

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