Multiple Choice: Identify the
choice that best completes the statement or answers the question.
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1.
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Isometric contractions produce: (p 195)
A | contractions | B | movement | C | muscle
shortening | D | contractions and movement, but not
shortening | E | contractions and shortening, but not
movement |
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2.
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Anaerobic glycolysis occurs without:
(p 194)
A | ATP | D | carbon
dioxide | B | oxygen | E | glucose | C | lactic
acid |
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3.
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Which of these pathways is the fastest way to
regenerate ATP during muscle activity: (p 194)
A | direct phosphorylation of ADP by creatine
phosphate | B | aerobic respiration | C | anaerobic glycolysis and lactic acid formation | D | oxidative phosphorylation | E | both aerobic respiration and anaerobic
glycolysis |
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True/False: Indicate whether the
statement is true or false.
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4.
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The neurotransmitter used by the nervous system to
activate skeletal muscle cells is acetylcholine. (p
188)
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5.
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The effect of the neurotransmitter on the muscle
cell membrane is to temporarily modify its permeability of ions such as Na+ and K+. (p 190)
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6.
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When a muscle fiber contracts, the I bands diminish
in size, the H zones disappear, and the A bands move closer together but do not diminish in length.
(p 191)
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7.
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A muscle twitch results when the muscle is
stimulated so rapidly that no evidence of relaxation is seen. (p
192)
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8.
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Aerobic respiration requires the use of oxygen to
generate ATP. (p 193)
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9.
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Oxygen debt promotes lactic acid accumulation on
muscles from anaerobic cellular respiration.(p 194)
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10.
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A sustained partial contraction of skeletal muscle
is called muscle tone. (p 195)
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Matching
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A | enzymes | F | anaerobic respiration | B | calcium ions | G | potassium ions | C | creatine phosphate | H | aerobic respiration | D | acetylcholinesterase | I | sodium ions | E | acetylcholine |
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11.
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Chemical that serves as the actual "go"
signal for muscle contraction. (p 187)
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12.
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Neurotransmitter substance released at motor end
plates by the motor neuron. (p 188)
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13.
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Chemical stored in the sarcoplasmic reticulum
((p 187/p 191)
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14.
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A metabolic pathway that produces water, carbon
dioxide, and ATP, and provides for a large amount of ATP per glucose because oxygen is used.
(p 193)
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15.
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A reserve, high-energy compound used to convert
ADP to ATP by the transfer of a high-energy phosphate group. (p
193)
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16.
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Enzyme that breaks down acetylcholine (ACh).
(p 189/p 190)
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