A. Is not essential for contraction to occur
B. Has a prolonged plateau phase?
C. Spreads in ward to all parts of the muscle via the t- tubule system
D. Begins with an, in ward movement of K+ ins
Related Mcqs:
- The contractile element in a skeletal muscle is present in______________?
A. Sarcolemma
B. Sarcoplasm
C. Myofibril
D. Endomysium - All are features of skeletal muscle except______________?
A. Cylindrical
B. Transverse striation
C. Centrally placed nuclei
D. Multiple nuclei - All of the following are true about skeletal muscle except _________________?
A. They are cylindrical in shape
B. Have multiple nuclei
C. Have transverse striations
D. The nuclei are central - All of the following decrease skeletal muscle tone by CNS effects except____________?
A. D-tubocurarin
B. Diazepam
C. Beclofen
D. Mephensin - Among the muscles of TMJ the following muscle opposing stabilizing and antagonistic muscle force as far as the disc is concerned_____________?
A. Medial pterygoid
B. Temporalis
C. Lateral pterygoid
D. External pterygoid - The action of styloglossus muscle is______________?
A. Protrusion of tongue
B. Posteriorly retracts the tongue
C. Depression of tongue
D. Elevation of tongue - The action of digastric muscle is__________________?
A. Depression of mandible
B. Protrusion of mandible
C. Side- to- side movement of mandible
D. Depressing the floor of the mouth - Side of action of muscle selanant is______________?
A. Myoneural junction
B. Central
C. Ascending reticular
D. Red nucleus activating system - Which one of the following muscle relaxant has the maximum duration of action ?
A. Atracurium
B. Vecuronium
C. Rocuronium
D. Doxacurium - 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
