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Unlv Kin 223 Exam 4 With Complete Solutions And Correct Answers Latest Version
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Unlv Kin 223 Exam 4 With Complete Solutions And Correct Answers Latest Version
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Unlv Kin 223 Exam 4 With CompleteSolutions And Correct Answers Latest
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The characteristic of muscle that allows it to be passively stretched is Answer: extensibility.
Which are possible functions of skeletal muscles? Answer: Maintenance of posture.b: Both highly
coordinated and localized simple movements.c: Temperature regulation.d: Support of certain body
organs.e: Regulation of the movement of material through certain body tracts.
One feature that helps provide fast energy to a muscle cell is the presence of granules containing the
complex carbohydrate Answer: glycogen.
nvaginations of the muscle cell membrane that extend deep into the cell are known as the Answer:
T-tubules.
A motor unit consists of Answer: a single motor neuron and the multiple muscle fibers it controls.
Which letter is associated with the light band and contains thin filaments only? Answer: I
The multiple nuclei in skeletal muscle cells are the result of the Answer: fusion of myoblasts.
For relaxation to occur, Answer: sarcoplasm calcium levels fall, calcium is removed from troponin,
and tropomyosin blocks binding sites on actin.
2024
, Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle
cell and thereby initiates the steps of contraction? Answer: Acetylcholine
An end plate potential is an event that involves a gain of Answer: positive charge along the inside of
the cell membrane, as sodium rapidly enters.
Glycolysis is an Answer: anaerobic process that occurs in the cytosol.
"Intermediate fiber" is another name for Answer: a fast-twitch, oxidative fiber.
The type of fibers specialized to continue contracting for extended periods of time, as would be required
in running a marathon, for example, are _____ fibers. Answer: slow-twitch
n a lab, wave summation is demonstrated by increasing the _________ of the stimulus. Answer:
frequency
Events of excitation contraction coupling, such as the release of calcium from intracellular stores, occur
during the ________ period of a muscle twitch. Answer: latent
One of the reasons you might struggle to lift a heavy object with your arm fully extended is because
Answer: full extension results in decreased overlap between thick and thin filaments in the muscle.
Lifting weights will cause muscles to enlarge. This is primarily due to Answer: an increase in the size
of muscle cells.
The type of muscle fibers that are striated, form Y-shaped branches, and are joined by intercalated discs
are Answer: cardiac.
2024
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