Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 45, Problem 7TY
Stimulation of a muscle fiber by a motor neuron occurs at
- a. the neuromuscular junction.
- b. the transverse tubules.
- c. the myofibril.
- d. the sarcoplasmic reticulum.
- e. none of the above.
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Stimulation of a muscle fiber by a motor neuron occurs ata. the neuromuscular junction.b. the transverse tubules.c. the myofibril.d. the sarcoplasmic reticulum.e. none of the above.
Which of the following statements are true of the neuromuscular junction? (Read carefully and select all the correct statements.)
A.
A synapse is the space between two muscle fibers.
B.
Acetylcholine is released from vesicles in the sarcolemma.
C.
The axon terminal is the end of a sensory neuron.
D.
Acetylcholine makes the sarcolemma more permeable to calcium ions.
E.
Cholinesterase is an enzyme that destroys acetylcholine so that the impulse will continue at the same strength.
F.
The receptors for acetylcholine are in the sarcolemma.
The part of the sarcolemma that invaginates into the interior of skeletal muscle fibers is thea. T tubule system. c. myofibrils. e. mitochondria.b. sarcoplasmic reticulum. d. terminal cisternae.
Chapter 45 Solutions
Biology
Ch. 45.1 - Prob. 1CCCh. 45.2 - Prob. 1CCCh. 45.2 - Prob. 1CSCh. 45.2 - Prob. 2CSCh. 45.3 - What is the normal function of the PPAR- protein...Ch. 45.3 - CoreSKILL What was the hypothesis proposed by...Ch. 45.3 - CoreSKILL Assume that the mean weight of both...Ch. 45 - Prob. 1TYCh. 45 - Prob. 2TYCh. 45 - Prob. 3TY
Ch. 45 - Prob. 4TYCh. 45 - The function of ATP during muscle contraction is...Ch. 45 - The function of Ca2+ in skeletal muscle...Ch. 45 - Stimulation of a muscle fiber by a motor neuron...Ch. 45 - Muscle fibers that have a large number of...Ch. 45 - Which of the following statements about movement...Ch. 45 - Prob. 10TYCh. 45 - Compare the structural and functional features of...Ch. 45 - Describe as many types of animal locomotion as you...Ch. 45 - Prob. 3CQCh. 45 - List and briefly describe the steps in the...Ch. 45 - Discuss the three types of muscle tissues found in...
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- Nervous stimulation of musclesa. occurs at a neuromuscular junction.b. results in an action potential that travels down the T system.c. causes calcium to be released from expanded regions of the sarcoplasmic reticulum.d. All of these are correctarrow_forwardTo stimulate muscle contraction, acetylcholine is released from the into the synaptic cleft. a. junctional folds O b. sarcolemma c. synaptic knob O d. terminal cisterna e. sarcoplasmic reticulumarrow_forwardWhich of the following is a microscopic feature of a skeletal muscle fiber? a. It contains multiple nuclei that are centrally located b. it contains myoglobin for oxygen storage c. it contains glycosomes for glycogen storage d. a and b e. b and carrow_forward
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