34. The refractory property of sodium channels is the reason that an action pote

Question

34. The refractory property of sodium channels is the reason that an action potential driven wave of depolarization spreads A. in both directions along the axon B. towards the cell body C. away from cell the body D. towards the dendritic synapses 35. The passage of an action potential from the external muscle cell membrane through the center of the muscle cell is facilitated by the A. neuromuscular junction B. ryanodine receptors C. sarcoplasmic reticulum D. transverse tubules 36.The nerve cell action potential is converted into a muscle cell action potential because of the depolarization of the A. neuromuscular junction B. sarcoplasmic reticulum C. transverse tubules D. ryanodine receptors 37. Activation of skeletal muscle contraction requires calcium binding to on the thin filament A. tropomyosin B. nebulin C. troponin D. calmodulin 38. In relaxed muscle, the crossbridge cycle pauses with most of the myosin active sites occupied by A. ADP B. ADP and phosphate (P) C. ATP D. ATP and calcium 39. In the first few seconds of fast-twitch muscle activity, ATP is regenerated as it is used because of the activity of A. glycolysis B. creatine kinase C. creatine D. oxidative phosphorylation 40. In smooth muscle, the activation mechanism requires that A. dihydropyridine (DHP) receptors open on the t-tubules B. troponin binds calcium C. calmodulin binds myosin light-chain phosphatase D. myosin light-chain kinase (MLCK) phosphorylates myosi

Explanation / Answer

answer 34. towards the dendritic synapses

answer 35 neuromuscular junction

answer 36. neuromuscular junction

answer 37.topomyosin

answer 38.ADP and phosphate pi

answer 39.oxydative phosphprylation

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.