Name Kladiza khan November 10, 2010 Lecture Quiz 4A is the ability of a muscle c

Question

Name Kladiza khan November 10, 2010 Lecture Quiz 4A is the ability of a muscle cell to recoil and resume its resting length? ^ ElaSticty B Extensibility. C. Contractility. D Excitabnty E None of the above 2 Awhich differentiates skeletal from cardiao muscle? A Skeletal muscle has sarcomeres C. Skelelal muscie has gap junctions. E. None of the above Skeletal muscle is primarily involuntary D. Skeletal muscle needs a nerve to contract 3 Which is is a function of skeletal muscle? C. Stabilizing joints. B. Maintaining posture. E. All of the above. R Producing movement D. Generating heat 4, Which connective tissue layer is continuous with a tendon? A Supramysium. B. Perimysium. c. Endomysium E. None of the above. D. Ectomysium 5 Which is the primary function for myoglobin? A. Store ATP C. Store oxygen. B. Store calcium. E. None of the above. D. Store acetylcholine Which part of the sarcomere becomes smaller during relaxation? B. Zone of overlap. E. None of the above. A A band C. I band. D. H zone. T. Which is FALSE about myosin? A. It is part of the thick filament B. It has an ATPase in its tail. C. It has a head that binds actin. D. It forms the A band. None of the above. Which is CORRECT about the thin filament? Actin has myosin binding sites B. Troponin T binds the Thick filaments. C. Tropomyosin functions to block the calcium binding sites on troponin C. D. Troponin A binds to actin. E. All of the above.

Explanation / Answer

(1)A.Elasticity

Muscle elasticity is the ability of your muscles to extend in an activity and resume their contracted position.

(2)B.Skeletal muscle is primarily involuntary

contraction of cardiac muscle is not under voluntary control (involuntary)

(3)E. All of the above

Functions of skeletal muscle system — support, movement, protection, blood cell production, calcium storage and endocrine regulation

(4)E. None of the above

Epimysium is the connective tissue which is continuous with the tendons

(5)E.None of the above

Myoglobin is responsible for carrying of oxygen molecules to muscle tissues.

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