Multiple Choice
Which of the following provides the final 'go signal' for muscle contraction?
9. Muscle Tissue
Steps of Muscle Contraction
Back9. Muscle Tissue
Steps of Muscle Contraction
- Multiple ChoiceThe most efficient means of producing ATP for muscle contraction is __________.1views
- Textbook Question
After ACh attaches to its receptors at the neuromuscular junction, what is the next step?
a. Sodium channels open
b. Calcium binds to regulatory proteins on the thin filaments
c. Cross bridges attach
d. ATP is hydrolyzed
2views - Textbook Question
Explain how a slight (but smooth) contraction differs from a vigorous contraction of the same muscle. Use the concepts of multiple motor unit summation.
- Multiple ChoiceThe type of muscle contraction in which the muscle fibers produce increased tension although the muscle neither shortens nor lengthens is called __________.1views
- Multiple ChoiceWhich of the following statements about muscle contraction is true?
- Multiple ChoiceWhich of the following correctly describes the initial step in the process of muscle contraction?
- Textbook Question
Tell where each of the three types of muscle tissue would be found in the body. What is meant by the statement, 'Smooth muscles are involuntary in action'?
1views - Multiple ChoiceDuring the phase of excitation-contraction coupling of skeletal muscle, what occurs immediately after the action potential spreads down the T tubule?1views
- Textbook Question
A smooth, sustained contraction resulting from very rapid stimulation of the muscle, in which no evidence of relaxation is seen, is called:
a. A twitch
b. Temporal summation
c. Multiple motor unit summation
d. Fused tetanus
1views - Multiple ChoiceWhat would occur if a contracting muscle became totally depleted of ATP?
- Textbook Question
Aerobic exercise results in all of the following except:
a. More capillaries surrounding muscle fibers
b. More mitochondria in muscle cells
c. Increased size and strength of existing muscle cells
d. More myoglobin
1views - Multiple ChoiceWhich of the following correctly lists the steps of muscle fiber contraction in the proper sequence?
- Textbook Question
Explain what is meant by the term excitation-contraction coupling.
- Multiple ChoiceWhich of the following allows recoil of the muscle fiber when contraction ends?