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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
trapezius and latissimus dorsi
B
levator scapulae and thomboideus
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
Stylohyoid
C
External intercostals
D
Internal intercostals
3) Muscle fibers are arranged in bundles called ___.
A
aponeuroses
B
fascicles
C
retinacula
D
compartments
4) Which of the following would be caused by a contraction of smooth muscle?
A
Elevatiing the eyebrows
B
Blinking the eyelids
C
Goose bumps
D
Blood leaving the left vintricle of the heart
5) Which of the following is not a purpose of the excess postexercise oxygen consumption (EPOC) in muscle?
A
To replenish the phosphagen system
B
To neutralize carbon dioxide buildup
C
To oxidize lactic acid
D
To serve elevated metabolic rate
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
longer aerobic respiration
B
increased glycolysis
C
increased use of myokinase
D
longer anaerobic fermentation
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
incomplete tetanus
B
complete tetanus
C
fatigue
D
spasm
8) Which of the following is true?
A
An insertion generally moves towards another insertion in contraction.
B
An origin generally moves towards an insertion in contraction.
C
An insertion generally moves towards an origin 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 intercalated discs of cardiac muscle.
B
The A bands of skeletal and cardiac muscle.
C
The sarcoplasmic reticulum of skeletal muscle.
D
The sarcolemma of skeletal muscle.
10) An isometric contraction
A
shortens the muscle
B
reduces the tension
C
does not change muscle length
D
lengthens 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
I band
C
Z line
D
A band
12) Which muscle(s) can contract without the need for nervous stimulation?
A
Skeletal, smooth, and cardiac muscle
B
Smooth muscle only
C
Smooth and cardiac muscle
D
Cardiac muscle only
13) Skeletal muscle is called ___, because it is usually subject to conscious control.
A
voluntary
B
striated
C
excitable
D
contractile
14) All muscle types will respond to an electrical stimulus because all muscle cells are ___.
A
excitable
B
contractile
C
striated
D
isometric
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
Depressor anguli oris
B
Orbicularis oris
C
Quadriceps femoris
D
Platysma
16) Which of the following describes muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
A
Direct attachment
B
Insertion
C
Indirect attachment
D
Origin
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 consumes more ATP to maintain a given level of muscle tension.
C
Smooth muscle contracts and relaxes more slowly.
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
parallel; bipennate
D
fusiform; parallel
19) Should I study the muscle diagrams?
A
A word bank will be provided for you.
B
Yes, there will be one on the exam.
C
You will have to label 10 muscles on the diagram.
D
Yes definitely choose this answer.
20) Shortening a muscle while it maintain constant tension is called ____.
A
complete tetanus
B
isotonic contraction
C
incomplete tetanus
D
isometric contraction
*select an answer for all questions
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