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WorksheetsA&P - Muscular System
Total questions: 30
Worksheet time: 16mins
Name
Class
Date
1.
Muscle cells differ from most other body cells because they have:
a)
contractibility
b)
more than one nucleus
c)
a cytoskeleton
d)
late formation in the embryo
2.
Striations are responsible for the following muscle cell function:
a)
excitability
b)
multicellularity
c)
contraction
d)
homeostasis
3.
Smooth muscle has the following characteristic
a)
striations
b)
involuntary action
c)
strong contractions
d)
many nuclei
4.
All muscle cells develop from:
a)
fibroblasts
b)
ectoderm
c)
osteoblasts
d)
myoblasts
5.
Which type of muscle is responsible for peristalsis?
a)
cardiac
b)
smooth
c)
striated
d)
skeletal
6.
Which ion stimulates the binding of actin to myosin?
a)
potassium
b)
calcium
c)
iron
d)
sodium
7.
After contraction, a muscle returns to its resting state when this occurs:
a)
Z-lines lengthen
b)
Z-lines come together
c)
actin binds to the myosin heads
d)
calcium escapes the sarcoplasmic reticulum
8.
Which of the following is NOT a property of skeletal muscle?
a)
mostly involuntary
b)
striated
c)
multicellular
d)
makes up over half of the body's weight
9.
A muscle is best described as:
a)
a complex tissue
b)
an organ
c)
separate from any organ system
d)
having no distinct organ structure
10.
Which of the following best describes the role of ATP energy in a muscle contraction?
a)
It binds actin to myosin.
b)
It permits inward movement of the Z-lines
c)
It stimulates the neurotransmitter receptor.
d)
It blocks the action of calcium.
11.
Which of the following neurotransmitters initiates muscle contraction?
a)
adrenaline
b)
acetylcholine
c)
dopamine
d)
serotonin
12.
Muscles carrying out anaerobic metabolism produce this waste product:
a)
glycogen
b)
oxygen
c)
methane
d)
lactic acid
13.
Which muscle shape is noted for having a broad origin?
a)
deltoid
b)
serratus
c)
biceps
d)
pinnate
14.
Which of the following best describes what occurs during an isometric muscle action?
a)
active lengthening
b)
passive lengthening
c)
no perceivable change in length
d)
active shortening
15.
Which muscle type produces the most pull for its size?
a)
serratus
b)
triangular
c)
triceps
d)
pinnate
16.
Which of the following is NOT a necessity for muscle cells?
a)
oxygen
b)
sodium
c)
calcium
d)
carbon dioxide
17.
The embryonic development of muscle tissue
a)
myogenesis
b)
myoblastitis
c)
myoclastis
d)
mesoderm
18.
Which type of muscle contains intercalated discs?
a)
skeletal
b)
smooth
c)
cardiac
d)
gross
19.
What type of fibrous connective tissue surrounds the fascicles of muscles?
a)
endomysium
b)
perimysium
c)
epimysium
d)
famysium
20.
What protein blocks the active site in a sarcomere?
a)
actin
b)
myosin
c)
tropomyosin
d)
troponin
21.
How does an increase in the number of mitochondria in a cell improve performance of muscles?
a)
The cell can perform more cellular respiration
b)
The cell performs less cellular respiration
c)
The cell performs more fermentation
d)
The cell performs less aerobic respiration.
22.
Simple muscle injury caused by sudden or violent stress on a muscle and/or joint.
a)
strain
b)
sprain
c)
contusion
d)
spasm
23.
Cramps are the painful contraction of muscle tissue. What by-product is often a cause of cramping?
a)
lactic acid
b)
ATP
c)
carbon dioxide
d)
alcohol
24.
Which muscle disorder is caused by the bacterial poison tetanus?
a)
rigid paralysis
b)
tetany
c)
flaccid paralysis
d)
simple paralysis
25.
Which of the genetic myopathies is caused by prevention of cellular respiration?
a)
familial periodic paralysis
b)
glycogen storage disease
c)
mitochondrial
d)
tetany
26.
Which muscle disorder often accompanies normal aging processes?
a)
cachexia
b)
muscular dystrophies
c)
mitochondrial
d)
glycogen storage disease
27.
Which of the following is NOT a cause of muscle loss?
a)
sedentary lifestyle
b)
malnutrition
c)
Vitamin E deficiency
d)
increase in aromatase
28.
The latissimus dorsi is an example of which type of muscle?
a)
pinnate
b)
parallel
c)
serratus
d)
rectus
29.
In this type of muscle action, muscles contract together to produce a common effect.
a)
antagonistic
b)
synergistic
c)
sphincter
d)
tensor
30.
If a person wants to increase strength, they should do work to stimulate...
a)
more fascicles
b)
larger groups of fascicles
c)
smaller groups of fascicles
d)
less fascicles
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