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Muscles Exam Part 1
Test Description: Muscular system
Instructions: Answer all questions to get your test result.
1) The muscles that laterally rotate and depress the scapula, as in shrugging and lowering the shoulders, are the ___.
A
levator scapulae and thomboideus
B
trapezius and latissimus dorsi
C
trapezius and serratus anterior
D
pectoralis minor and serratus anterior
2) Which of the following muscles is the prime mover for inhalation?
A
Diaphragm
B
External intercostals
C
Stylohyoid
D
Internal intercostals
3) Muscle fibers are arranged in bundles called ___.
A
aponeuroses
B
compartments
C
fascicles
D
retinacula
4) Which of the following would be caused by a contraction of smooth muscle?
A
Blinking the eyelids
B
Blood leaving the left vintricle of the heart
C
Goose bumps
D
Elevatiing the eyebrows
5) Which of the following is not a purpose of the excess postexercise oxygen consumption (EPOC) in muscle?
A
To oxidize lactic acid
B
To replenish the phosphagen system
C
To serve elevated metabolic rate
D
To neutralize carbon dioxide buildup
6) Athletes who train at high altitudes increase their red blood cell count, which increases their oxygen supply during exercise. Increased oxygen supply results in ___.
A
increased use of myokinase
B
increased glycolysis
C
longer anaerobic fermentation
D
longer aerobic respiration
7) If one nerve stimulus arrives at a muscle fiber so soon that the fiber has only partially relaxed from the previous twitch, the most likely result will be ___.
A
fatigue
B
complete tetanus
C
spasm
D
incomplete tetanus
8) Which of the following is true?
A
An origin generally moves towards an insertion in contraction.
B
An insertion generally moves towards an origin in contraction.
C
An insertion generally moves towards another insertion in contraction.
D
An origin generally moves towards another origin in contraction.
9) Where would you expect to find numerous gap junctions in muscular tissue?
A
The sarcolemma of skeletal muscle.
B
The sarcoplasmic reticulum of skeletal muscle.
C
The A bands of skeletal and cardiac muscle.
D
The intercalated discs of cardiac muscle.
10) An isometric contraction
A
lengthens the muscle
B
reduces the tension
C
does not change muscle length
D
shortens the muscle
11) A dark band formed by parallel thick filaments that partly overlap the thin filaments is known as an ___.
A
M band
B
Z line
C
I band
D
A band
12) Which muscle(s) can contract without the need for nervous stimulation?
A
Cardiac muscle only
B
Skeletal, smooth, and cardiac muscle
C
Smooth muscle only
D
Smooth and cardiac muscle
13) Skeletal muscle is called ___, because it is usually subject to conscious control.
A
contractile
B
voluntary
C
excitable
D
striated
14) All muscle types will respond to an electrical stimulus because all muscle cells are ___.
A
contractile
B
isometric
C
excitable
D
striated
15) After taking their wedding vows, a bride and groom often ceremonially use which of the following muscles before walking away from the altar? (i.e. You may now kiss the bride)
A
Quadriceps femoris
B
Platysma
C
Orbicularis oris
D
Depressor anguli oris
16) Which of the following describes muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
A
Origin
B
Indirect attachment
C
Direct attachment
D
Insertion
17) Which of the following is an accurate comparison of skeletal muscle to smooth muscle?
A
Smooth muscle contracts more rapidly but, relaxes more slowly.
B
Smooth muscle contracts and relaxes more slowly.
C
Smooth muscle consumes more ATP to maintain a given level of muscle tension.
D
Smooth muscle contracts more slowly but, relaxes more rapidly.
18) The rectus abdominis is a ___ muscle, while the rectus femoris is a ___ muscle.
A
convergent; unipennate
B
bipennate; parallel
C
fusiform; parallel
D
parallel; bipennate
19) Should I study the muscle diagrams?
A
Yes, there will be one on the exam.
B
Yes definitely choose this answer.
C
You will have to label 10 muscles on the diagram.
D
A word bank will be provided for you.
20) Shortening a muscle while it maintain constant tension is called ____.
A
isometric contraction
B
isotonic contraction
C
incomplete tetanus
D
complete tetanus
*select an answer for all questions
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