
Muscle Unit Review
Flashcard
•
Science
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is summation in muscle physiology?
Back
Summation refers to the process where multiple stimuli are applied to a muscle in quick succession, leading to a stronger contraction than a single stimulus.
2.
FLASHCARD QUESTION
Front
What is the sarcoplasmic reticulum?
Back
The sarcoplasmic reticulum is a specialized type of endoplasmic reticulum in muscle cells that stores calcium ions, which are essential for muscle contraction.
3.
FLASHCARD QUESTION
Front
What is the result of summation and recruitment working together?
Back
The result is sustained contraction, which allows for increased strength and endurance in muscle performance.
4.
FLASHCARD QUESTION
Front
What is the neuromuscular junction?
Back
The neuromuscular junction is the synapse or connection point between a motor neuron and a muscle fiber, consisting of the nerve terminal, synaptic cleft, and motor end plate.
5.
FLASHCARD QUESTION
Front
What molecule is required for myosin head activation during muscle contraction?
Back
ATP (adenosine triphosphate) is required to charge the myosin head, enabling it to bind to actin and facilitate muscle contraction.
6.
FLASHCARD QUESTION
Front
Define muscle fatigue.
Back
Muscle fatigue is the decline in ability of a muscle to generate force, often due to prolonged activity, depletion of energy sources, or accumulation of metabolic byproducts.
7.
FLASHCARD QUESTION
Front
What is recruitment in muscle physiology?
Back
Recruitment is the process of activating additional motor units to increase muscle force during contraction.
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