Multiple Choice
Control of interaction of thin filament with thick filament in skeletal muscle is amplified because
A) Binding of Ca to calmodulin activates CAMK phosphorylation of the myosin light chains
B) Binding of Ca to TnC causes movement of tropomyosin that covers multiple myosin
binding sites on the thin filament
C) Greater release of Ca from the sarcoplasm ic reticulum activates m ore m yofilaments
D) Ca inhibits the protein phosphatases that dephosphorylate the myosin light chains
E) Repetitive stimulation keeps the [Ca2+] up longer
Correct Answer:
Verified
Correct Answer:
Verified
Q1: The protein that confers Ca<sup>2+</sup> sensitivity onto
Q2: In a motor neuron, the action potential
Q3: The acetylcholine in the neuromuscular junction is
Q4: In the neuromuscular junction, the junctional folds
Q5: Force lags behind the Ca<sup>2+</sup> transient because<br>A)
Q7: A neurotransmitter released onto a motor neuron
Q8: The acetylcholine receptor at the neuromuscular junction
Q9: All of the following are true about
Q10: If we excite a motor neuron to
Q11: Spatial summation refers to<br>A) Sum ma tion