When acetylcholine diffuses across the synaptic cleft and binds to receptors o t

Question

When acetylcholine diffuses across the synaptic cleft and binds to receptors o the folded sarcolemma it initially causes channels to open in the sarcolemma. voltage-gated Ca++ chemically-gated Na+ chemicaly-gated K+ voltage-gated Na+ voltage-gated K+ A contraction in which the muscle changes in length with the same tension applied to it is called: muscle twitch. isotonic contraction. isometric contraction. An individual accidentally transected the spinal cord between T1 and L2. This would result in: paraplegia. Hemiplegia. quadriplegia. spinal shock only. Smooth muscles that act like skeletal muscles but are controlled by autonomic nerves and hormones are: single-unit muscles.

Explanation / Answer

36. The Ca2+ ions helps to release acetylcholine from synaptic vesicles. When acetylcholine diffuses across the synaptic cleft and binds to receptors on the folded sarcolemma it initially causes chemically-gated Na+ channels to open in the sarcolemma. It allows Na+ ions to enter into the muscle fiber and K+ ions to exit the muscle fiber.

Answer : B

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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