The contractile element in a skeletal muscle is present in______________?

Related Mcqs:

1. Contractile element in myofibril is_______________?

   A. H band
   B. Sarcoplasm
   C. Sarcomere
   D. A line

2. The skeletal muscle action potential______________?

   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

3. All are features of skeletal muscle except______________?

   A. Cylindrical
   B. Transverse striation
   C. Centrally placed nuclei
   D. Multiple nuclei

4. 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

5. All of the following decrease skeletal muscle tone by CNS effects except____________?

   A. D-tubocurarin
   B. Diazepam
   C. Beclofen
   D. Mephensin

6. The number of muscle fibers in a motor unit are least in______________?

   A. Laryngeal muscles
   B. Pharyngeal muscles
   C. Muscles of middle ear
   D. Extraocular muscles

7. 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

8. 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

9. 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

10. A child is below the third percentile for height. Growth velocity is normal, but chronologic age is more than skeletal age. The most likely diagnosis is______________?

    A. Constitutional delay in growth
    B. Genetic short stature
    C. Primordial dwarfism
    D. Hypopituitarism