36.) Blocking Ca from entering a skeletal muscle cell would prevent a.) action p

Question

36.) Blocking Ca from entering a skeletal muscle cell would prevent a.) action potentials from forming on the T tubule membrane b.) myosin heads from binding to actin c) the troponin-tropomyosin complex from binding to actin subunits d.) a and b e.) a. b, and e 37.) Immediately before myosin heads pivot (power stroke) on an actin filament a.) ATP is hydrolyzed to ADP b.) the troponin-tropomyosin complex binds to actin c.) ADP is released d.) a and b e.) a, b, and c 38.) Motor neurons release at a synapse with a skeletal muscle a.) K+ b.) Ca2 C.)ATP d.) Na e.) acetylcholine 39.) T tubules a. ) release acetylcholine into muscle cells b.) block actin subunits c.) are part of the dark band of a sarcomere d.) carry action potentials into a muscle cell e.) get shorter when a muscle contracts 40.) The sarcoplasmic reticulum of a skeletal muscle cell a.) releases Ca2+ ions when stimulated b.) causes an action potential to spread through the cytoplasm of a muscle cell c.) receives acetylcholine from motor neurons d.) is part of a sarcomere e.) none of the above

Explanation / Answer

36. e. a,b,c

37. a. ATP is hydrolysed to ADP

38. e. Acetylcholine

39. d. Carry action potential to a muscle cell

40. a. Release calcium ions when stimulated.

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