[Answered] Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions ...

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Author Question: Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions ... (Read 42 times)

Frost2351

Hero Member
Posts: 557

on: Jun 22, 2018

Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions result in the __________ of the muscle fibers.

a. shortening
b. lengthening
c. activating
d. stretching

Question 2

Depolarization of the muscle fiber opens voltage-gated ______ channels, which trigger contractions.

a. Ca2+
b. Na+
c. K+
d. Cl-

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helenmarkerine

Sr. Member
Posts: 324

Reply #1 on: Jun 22, 2018

Answer to Question 1

Answer: A

Answer to Question 2

Answer: A

Frost2351

Hero Member
Posts: 557

Reply #2 on: Jun 22, 2018

Thank you

helenmarkerine

Sr. Member
Posts: 324

Reply #3 on: Jun 22, 2018

No problem

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Author Question: Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions ... (Read 42 times)

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