Please answer all questions Following death, muscles enter a period of sustained contraction called rigor mortis. This develops because: a) the Na+/K+ active transport pump fails. b) there isn't any more neurotransmitter secretion. c) there isn't any ATP to break actin-myosin bonds. d) calcium is not returned to the cisternae. If a muscle is stimulated to contract at maximum tension yet brief periods of relaxation are possible, the muscle is demonstrating: a) twitch. b) summation. c) incomplete tetany. d) complete tetany.
Please answer all questions
Following death, muscles enter a period of sustained contraction called rigor mortis. This develops because:
a) the Na+/K+ active transport pump fails.
b) there isn't any more neurotransmitter secretion.
c) there isn't any ATP to break actin-myosin bonds.
d) calcium is not returned to the cisternae.
If a muscle is stimulated to contract at maximum tension yet brief periods of relaxation are possible, the muscle is demonstrating:
a) twitch.
b) summation.
c) incomplete tetany.
d) complete tetany.
Muscle twitch- It is an involuntary contraction of muscle usually caused by damage to nerve.
Muscle Summation- It is occurrence of an additional twich before the previous one completely relaxed.
Incomplete Tetany- During incomplete Tetany muscle goes through quick cycles of contraction with a short phase or period of relaxation.
Complet Tetany- When the muscle contraction in a manner that the relaxation is completely inhibited then the muscle is said to be in complete tetany.
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