Muscle Contraction and Structure Quiz
Authored by Lacoya Hall
Other
12th Grade
Used 8+ times
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens first in muscle contraction?
Cross-bridge cycling
Delivery of an action potential at the neuromuscular junction
Myosin detachment
Calcium release from the sarcoplasmic reticulum
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cross-bridge forms when which two specific components meet?
Actin & troponin
Myosin & ATP
Myosin heads & myosin binding sites
Calcium ions & troponin
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cross-bridge can only form when which two substances are present?
ATP and calcium ions
ADP and potassium ions
ATP and acetylcholine
Acetylcholine and dopamine
4.
DRAG AND DROP QUESTION
30 sec • 1 pt
The thick myofilament is composed of (a)
5.
DRAG AND DROP QUESTION
30 sec • 1 pt
A group of muscle fibers is called a (a)
6.
DRAG AND DROP QUESTION
30 sec • 1 pt
The CT sheath that surrounds an entire muscle is called (a)
7.
DRAG AND DROP QUESTION
30 sec • 1 pt
The smallest unit of a muscle to contract is (a)
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