Mader's Understanding Human Anatomy & Physiology (Longenbaker), 8th Edition

Chapter 7: The Muscular System

True or False Quiz

1
All muscle tissue has the ability to contract or shorten.
A)True
B)False
2
Cardiac muscle is under voluntary control.
A)True
B)False
3
Skeletal muscle is autorhythmic.
A)True
B)False
4
The plasma membrane of a skeletal muscle fiber is called the sarcolemma.
A)True
B)False
5
A muscle cell is called a fiber because it is elongated instead of roundish.
A)True
B)False
6
The light region of a sarcomere is called the Z-line.
A)True
B)False
7
Each skeletal muscle fiber must be stimulated by a motor neuron to start the contraction process.
A)True
B)False
8
ATP is needed to activate the myosin head so it can bind to the actin.
A)True
B)False
9
Calcium is needed to detach the myosin head from actin.
A)True
B)False
10
Muscle cramping seems to be due to lack of ATP needed to detach the myosin from the actin.
A)True
B)False
11
Creatine phosphate is used to regenerate ATP in muscle fibers.
A)True
B)False
12
Individual muscle fibers obey the all-or-none law.
A)True
B)False
13
A maximal sustained contraction is a tetanic contraction.
A)True
B)False
14
Muscle organs obey the all-or-none law.
A)True
B)False
15
The muscle that does most of the work in a group of muscles working together is called the synergist.
A)True
B)False
16
Muscle mass and strength tend to decrease with age.
A)True
B)False
17
The muscular system does NOT play a significant role in body homeostasis.
A)True
B)False
18
The lack of dystrophin is the cause of Duchenne muscular dystrophy.
A)True
B)False
Maders Understanding Human Anatomy & Physiology
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