Rasmussen BSC2087 Module 4 Quiz Latest 2021
Question 1
Which of the following substances is the neurotransmitter released from motor neurons
initiating muscle contraction?
Acetylcholine
Norepinephrine
Dopamine
Acetylcholinesterase
Question 2
Which statement best describes a sarcomere?
It provides an anchor for the thick and thin filament
Store and release calcium ions into the cell interior for muscle contraction
It is the smallest contractile unit of a muscle fiber
It is the plasma membrane of the muscle fiber
Question 3
Which of the following is the first phase of muscle contraction?
Excitation-contraction coupling
Relaxation
Contraction
Excitation
Question 4
Which of the following is true of muscle contraction?
ATP is converted to ADP during a power stroke.
The Z-disks move farther apart during contraction.
Question 1
Which of the following substances is the neurotransmitter released from motor neurons
initiating muscle contraction?
Acetylcholine
Norepinephrine
Dopamine
Acetylcholinesterase
Question 2
Which statement best describes a sarcomere?
It provides an anchor for the thick and thin filament
Store and release calcium ions into the cell interior for muscle contraction
It is the smallest contractile unit of a muscle fiber
It is the plasma membrane of the muscle fiber
Question 3
Which of the following is the first phase of muscle contraction?
Excitation-contraction coupling
Relaxation
Contraction
Excitation
Question 4
Which of the following is true of muscle contraction?
ATP is converted to ADP during a power stroke.
The Z-disks move farther apart during contraction.
