Small packets of acetylcholine released randomly from the nerve cell membrane at rest Produces_______________?
(A) Inhibitory post synaptic potential
(B) Miniature end plate potential
(C) Action potential
(D) End plate potential
Cardiac muscle contracts due to______________?
(A) Extracellular Ca+2
(B) Sarcoplasmic ca+2
(C) Extracellular Na+
(D) Intracellular Na+
Skeletal muscles_____________?
(A) Contracts when calcium is taken up by sarcoplasmic reticulum
(B) Contracts when actin and myosin filaments shorten
(C) Contraction is initiated by calcium binding to troponin
(D) Contraction is initiated by calcium binding to tropomyosin
Which one of the following is a regulatory protein of the muscle ?
(A) Troponin
(B) Myosin
(C) Actin
(D) Protein- C
Contractile element in myofibril is_______________?
(A) H band
(B) Sarcoplasm
(C) Sarcomere
(D) A line
The following electrodes are used to detect the muscle activity without pain_________________?
(A) Surface electrode
(B) Round electrode
(C) Hook electrode
(D) Needle electrode
The study of the electrical activity of the muscle is_______________?
(A) EEG
(B) EMG
(C) Venn diagram
(D) ECG
In an isotonic contraction of the muscle________________?
(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 contraction
(D) The length of muscle is increased
Tendon (or) ligament is attached to a bone through ____________?
(A) Tomes fibers
(B) Interstitial fibers
(C) Sharpey’s fibers
(D) Haversian fibers
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