b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less perme to Ca2+ ions. I Select] c. When an action potential travels down a motor neuron to the axon terminal, voltage-gated Ca channels open and the membrane potential of the axon terminal increases (becomes more posit ( Select ) d. The "cocked" position of a myosin head is an energetically favorable structural conformation. ( Select) e. The "power stroke" action of a myosin head is an energetically favorable action.
b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less perme to Ca2+ ions. I Select] c. When an action potential travels down a motor neuron to the axon terminal, voltage-gated Ca channels open and the membrane potential of the axon terminal increases (becomes more posit ( Select ) d. The "cocked" position of a myosin head is an energetically favorable structural conformation. ( Select) e. The "power stroke" action of a myosin head is an energetically favorable action.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
1
![Which of the following statements are true about muscle contraction?
a. When acetylcholine binds to acetylcholine receptors in the neuromuscular junction, then voltage-
gated Na+ channels will open, followed by voltage-gated K+ channels.
[ Select )
b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less permeable
to Ca2+ ions. ( Select ]
c. When an action potential travels down a motor neuron to the axon terminal, voltage-gated Ca2+
channels open and the membrane potential of the axon terminal increases (becomes more positive).
[ Select )
d. The "cocked" position of a myosin head is an energetically favorable structural conformation.
( Select )
e. The "power stroke" action of a myosin head is an energetically favorable action.
[ Select )
f. The movement of Ca2+ ions down their electrochemical gradient from the sarcoplasmic reticulum
is energetically unfavorable. ( Select)
options=true/false](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88814538-a089-4bce-98ba-0d7ebce5f95a%2F08160448-c430-46ef-bc33-75a906b85d25%2F7mt4f4p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Which of the following statements are true about muscle contraction?
a. When acetylcholine binds to acetylcholine receptors in the neuromuscular junction, then voltage-
gated Na+ channels will open, followed by voltage-gated K+ channels.
[ Select )
b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less permeable
to Ca2+ ions. ( Select ]
c. When an action potential travels down a motor neuron to the axon terminal, voltage-gated Ca2+
channels open and the membrane potential of the axon terminal increases (becomes more positive).
[ Select )
d. The "cocked" position of a myosin head is an energetically favorable structural conformation.
( Select )
e. The "power stroke" action of a myosin head is an energetically favorable action.
[ Select )
f. The movement of Ca2+ ions down their electrochemical gradient from the sarcoplasmic reticulum
is energetically unfavorable. ( Select)
options=true/false
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