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Muscle Contraction and Structure Quiz

Authored by Lacoya Hall

Other

12th Grade

24 Questions

Used 8+ times

Muscle Contraction and Structure Quiz
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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)  

MYOSIN
ACTIN
TROPONIN
TROPOMYOSIN

5.

DRAG AND DROP QUESTION

30 sec • 1 pt

A group of muscle fibers is called a (a)  

FASCICLE
TENDON
LIGAMENT
MYOFIBRIL

6.

DRAG AND DROP QUESTION

30 sec • 1 pt

The CT sheath that surrounds an entire muscle is called (a)  

EPIMYSIUM
PERIMYSIUM
ENDOMYSIUM
FASCIA

7.

DRAG AND DROP QUESTION

30 sec • 1 pt

The smallest unit of a muscle to contract is (a)  

SARCOMERE
MYOFIBRIL
MYOSIN
ACTIN

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