
Prcatice 2: Muscle Structure
Authored by Mae-Lee Terrell
Science
12th Grade
NGSS covered
Used 1+ times

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1.
MATCH QUESTION
1 min • 1 pt
Match these terms with the correct statement or definition.
Extensibility
The capacity to respond to a stimulus.
Contractility
Ability to recoil to original resting length after being stretched.
Excitability
Ability to be stretched.
Elasticity
Ability to shorten with a force.
2.
MATCH QUESTION
1 min • 1 pt
Match these terms with the correct statement or definition.
Perimysium.
Connective tissue that surrounds muscle fasciculi.
Epimysium.
Connective tissue that surrounds a muscle fiber.
Endomysium.
Muscle bundle.
Muscle fiber
Connective tissue sheath that surrounds each skeletal muscle.
Muscle fasiculus
Single muscle cell; makes up muscle fasciculi.
3.
MATCH QUESTION
1 min • 1 pt
Match the following.
Troponin
Thick myofilaments which resemble bundles of golf clubs.
Tropomyosin
Thread-like structure that extends from one end of the muscle
fiber to the other.
Actin
Covers and uncovers attachment sites for myosin on actin
myofilaments.
Myofibril
Provide calcium binding sites on actin myofilaments.
Myosin
Thin myofilament which resembles two minute strands of
pearls twisted together.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The basic structural and functional unit of the muscle is
the sarcomere.
myosin.
actin.
a muscle fiber.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Forms an attachment site for actin myofilaments; the end of the sarcomere.
troponin
cross-bridge
z-disk
myofibril
6.
MATCH QUESTION
1 min • 1 pt
Match the following.
Sarcolemma
Invaginations (indentions) of the sarcolemma that wrap around sarcomeres.
T tubules
Highly organized, smooth endoplasmic reticulum; contains
high concentrations of calcium.
Sarcoplasm
The cytoplasm of a muscle fiber.
Sarcoplasmic reticulum
The cell membrane of a muscle fiber.
7.
MATCH QUESTION
1 min • 1 pt
Match the numbered label with the term.
label 2
perimysium
label 4
endomysium
label 1
Epimysium
Tags
NGSS.HS-LS1-2
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