Transcript 1. What are the three types of muscles found in the muscular system

1. What are the three types of
muscles found in the muscular system
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A.
B.
C.
D.
Skeletal, cardiac, muscle fibers
Skeletal, cardiac, smooth
Skeletal, smooth, connective
Smooth, cardiac, connective
2. The contraction of a muscle is due
to the movement of
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B.
C.
D.
Skeletal muscle
Muscle fibers
Myofibrils
sarcolemma
3. Striated, multi-nucleated cells
belong to
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A.
B.
C.
D.
Skeletal muscle
Cardiac muscle
Smooth muscle
Connective tissue
5. All muscles are involved in
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A.
B.
C.
D.
Movement
Digestion
Posture
support
7. Muscle cells are surrounded and
bundled by
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A.
B.
C.
D.
Tendons
Muscle fibers
Ligaments
Connective tissue
8. The prefix that is used when
referring to muscle structure
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A.
B.
C.
D.
Myo, mys
Mys, endo
Epi, endo
Myo, peri
9. All of the following are functions of
skeletal muscles EXCEPT
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B.
C.
D.
Posture
Heat generation
Movement
physique
10. The connective tissue that wraps
and protects each individual muscle
fiber
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A.
B.
C.
D.
Epimysium
Perimysium
Endomysium
fascia
11. The connective tissue that
surround and protects the fascicle
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B.
C.
D.
Epimysium
Perimysium
Endomysium
fascia
12. Another name for muscle fiber is
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B.
C.
D.
Sarcolemma
Sarcomere
Muscle cell
Myofibril
13. The _____________ is the plasma
membrane of the muscle fiber
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A.
B.
C.
D.
Sarcolemma
Sarcomere
Sarcoplasmic reticulum
Myosin filament
14. This organelle is responsible for
the shortening of the muscle during
contraction
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A.
B.
C.
D.
Sarcolemma
Sarcomere
Sarcoplasmic reticulum
Myofibril
15. Thick filaments are composed of
the protein
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B.
C.
D.
Actin
Myosin
Insulin
Leucine
16. The thin filaments are anchored to
the Sarcomere by the
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B.
C.
D.
I band
A band
H zone
Z disc
17. One motor neuron and all the
skeletal muscle cells stimulated by that
neuron is called a
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B.
C.
D.
Fascicle
Nerve bundle
Motor unit
Motor cell
18. The junction between the axon
terminal and the muscle it is
stimulating
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A.
B.
C.
D.
Synaptic cleft
Neuromuscular junction
Synaptic junction
Neurotransmitter junction
19. When an action potential reaches
the axon terminal, ____________ are
released
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A.
B.
C.
D.
Neurons
Vesicles
Neurotransmitters
hormones
20. The specific neurotransmitter
involved in skeletal muscle contraction
is
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B.
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Adenosine triphosphate
Adenosine diphosphate
Deoxyribonucleic acid
Acetyl Choline
Energy for muscle contraction
primarily comes from
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B.
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ATP
ADP
Ach
CP
24. During a contraction the
__________ gets shorter
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B.
C.
D.
Sarcomere
Neuromuscular junction
Motor Unit
neurotransmitter
The protein actin is found on the
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B.
C.
D.
Thick filament
Myosin
Thin filament
Muscle cell
26. Ca⁺ is stored and released by the
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B.
C.
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Sarcoplasmic reticulum
Nucleus
Sarcomere
Myofibril
27. During contraction the ________
slide over the ____________, taking
up the space of the ___________
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B.
C.
D.
Thick filaments, thin filaments, bare zone
Thin filaments, thick filaments, bare zone
Thin filaments, thick filaments, z disc
Thick filaments, thin filaments, z disc
28. The previous action is part of the
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B.
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Sliding filament theory
Graded response
Extensibility
contractility
29. Ability to receive and respond to a
stimulus
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B.
C.
D.
Excitability
Contractility
Extensibility
Elasticity
30. Ability of muscle cells to shorten
when an adequate stimulus is received
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B.
C.
D.
Excitability
Contractility
Extensibility
Elasticity
31. Ability of muscle cells to be
stretched
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B.
C.
D.
Excitability
Contractility
Extensibility
Elasticity
32. Ability of muscle cells to recoil and
resume resting length after stretching
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B.
C.
D.
Excitability
Contractility
Extensibility
Elasticity
Study diagram
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Muscle fiber
Endomysium
Fascicle
Perimysium
epimysium
Muscle fiber diagram
• Has nucleus so it
MUST be the
muscle cell
– Myofibril
– Nucleus
– Sarcolemma (cell
membrane of
muscle)
Myofibril diagram
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Myofibril
Sarcomere
Z disc
Light band (I band)
Dark band(A band)
Thick and thin
filaments
Microfilaments (thick and thin)
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Sarcomere
Z disc
Thin fimaments
Thick filaments
Answers
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