GT_Muscle_Tissue_Test_Review_ANSWER_KEY

GT_Muscle_Tissue_Test_Review_ANSWER_KEY - Name_Date_Mod...

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Name:_______________________________________Date:_____________Mod:______ Muscle Tissue Review Matching __ h __ 1. sarcolemma __ f __ 2. sarcoplasma __ d __ 3. sarcoplasmic reticulum __ n __ 4. T tubules __ i __ 5. myofibril __ g __ 6. I band __ m _ 7. A band __ J __ 8. Z disc __ k __ 9. H zone __ c __ 10. sarcomere __ a __ 11. actin __ b __ 12. myosin __ l __ 13. fascicle __ e __ 14. muscle fiber Short Answer 15. Label the diagram of muscle tissue, including the four layers of connective tissue. a. thin protein filaments b. thick protein filaments c. contractile unit of muscle d. stores calcium e. muscle cell f. cytoplasm of muscle cell g. composed of thin filaments and shortens when muscle contracts h. plasma membrane i. bundle of contractile filaments in muscle cells j. distance between two of these makes up the sarcomere k. only exists in relaxed muscle l. bundle of muscle cells m. contains thick filaments with lateral end regions overlapping with thin filaments n. conducts action potential deep into muscle cell fascia (muscle) epimysium permysium (fascicle) endomysium (muscle fiber) myofilaments myofilaments myofibril sarcoplasmic reticulum sarcolemma perimysium endomysium fascicle tendon epimysium
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Name:_______________________________________Date:_____________Mod:______ Muscle Tissue Review 15. What are the four main functions of muscles? Skeletal: Movement (contraction and relaxation), Respiration (breathing), Posture support, heat production Properties of all muscles: extensibility, excitability, contractility, elasticity 16. This is a diagram of a __________________. Label the Z discs, H zone, M line, I band, A band, actin, myosin. 17. When the muscle cell contracts what happens to the: a. H zone Disappears b. Z discs Move closer together c. I band - Shortens d. A band Remains the same 18. What is a motor unit?
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