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Muscle Unit Test B
Name:_______________________________Hr____________Date_______________________
I. Vocab
1. Troponin
A. Contractile fibers in muscle cells
2. Triad
B. Protein that attaches myosin to the Z lines in the myofibril
3. Titin
C. Enzyme that catalyzes breakdown of acetylcholine
4. Tendon
D. End of a muscle that attaches to a relatively immovable
part
E. A prime mover
5. Synaptic Cleft
6. Sarcomeres
7. Peristalsis
8. Origin
9. Neuromuscular Junction
10. Myofibrils
11. Muscle Impulse
12. Motor Unit
13. Motor Neuron
14. Motor End Plate
15. Insertion
16. Cisternae
F. Rhythmic waves of contraction in the walls of certain
tubular organs
G. Neuron that transmits impulses from the central nervous
system to an effector.
H. Specialized part of a muscle fiber membrane at a
neuromuscular junction.
I. Protein that functions with tropomyosin to block muscle
contraction until calcium ions are present
J. A narrow extracellular space between the presynatptic and
postsynaptic membrane
K. Enlarged portion of the sarcoplasmic reticulum near the
actin and myosin filaments of a muscle fiber
L. A motor neuron and its associated muscle fibers
M. Cordlike of bandlike mass of white fibrous connective
tissue that connects muscle to a bone
N. Synapse between a motor neuron and a skeletal muscle
fiber.
O. End of a muscle attached to a movable part
17. Aponeuroses
P. Sheet of connective tissue that attaches muscle to bone and
fascia
Q. Structural and functional unit of a myofibril.
18. Antagonist
R. Group of three structures
19. Agonist
S. A muscle that opposes the prime mover
20. Acetylcholinesterase
T. Impulse propagated along the sarcolemma into the
transverse tubules.
II. Muscle Naming
Identify how the following muscles were named:
A = Action
B = Location
C = Shape
D = Size
There may be multiple answers for each muscle, you only need to put one letter on the answer
sheet. Letters will be used more than once.
21. Temporalis
26. Gluteus maximus
22. Fibularis Longus
27. Rhomboid major
23. Adductor magnus
28. Tibialis anterior
24. Trapezius
29. Pectoralis minor
25. Flexor carpi radialis
30. Extensor digitorum
III. Multiple Choice
31. The motor protein found in the thick filament is called:
A. Myosin
B. Tropomyosin
C. Troponin
D. Actin
32. Cells in the same fiber of cardiac muscle are separated from each other by a(n):
A. Mesophyll
B. Synapses
C. Intercalated disks
D. Periosteum
33. Which of the tissues contain multinucleated cells?
A. Smooth muscle
B. Skeletal muscle
C. Cardiac muscle
D. Visceral muscle
34. A skeletal muscle contraction is called a ________________
A. twitch
B. peristalsis
C. jerk
d. pull
35. Calcium ions are released into the myofibrils from which organelle?
A. Mitochondria
B. Sarcoplasmic Reticulum
C. Sarcoplasm
D. Nucleus
36. Muscle fibers contracting together is called:
A. Summation
B. Grouping
C. Relaxation
D. Refraction
37. ____________ ions bind to troponin
A. Sodium
B. Copper
C. Calcium
D. Carbon
38. The conductive cell membrane that covers the muscle fiber is called the ________________
A. Mitochondria
B. Sarcoplasmic Reticulum
C. Myelin
D. Sarcolemma
39. 80% of a muscle fiber’s volume is made up of
A. Sarcoplasmic reticulum
B. Fascicles
C. Myofibrils
D. Perimysium
40. Muscles work by ____________________ bones in specific directions
A. Pushing
B. Pulling
C. Ossifying
D. Constructing
41. ____________________build up is the most common cause of muscle fatigue.
A. Sodium
B. Lactic Acid
C. Acetic Acid
D. Calcium
42. The neurotransmitter that signals muscle contraction is called:
A. Dopamine
B. Epinephrine
C. Serotonin
D. Acetylcholine
43. A forceful, sustained contraction is called a ____________________ contraction.
A. latent
B. summation
C. threshold
D. tetanic
44. Thick filaments are held in place by:
A. ATP
B. Titin proteins
C. Myoglobin
D. Acetylcholine
45. The ends of smooth muscle tissue are described as:
A. tapered
B. blunt
C. flared
D. rounded
46. Neurotransmitters are released from ____________ found in the distal ends of neurons
A. mitochondria
B. vesicles
C. sarcolemma
D. sarcoplasmic reticulum
47. The connective tissue that surrounds the muscle fiber is called
A. Epimysium
B. Perimysium
C. Endosteum
D. Endomysium
IV. Matching
Identify the following structures Use the word bank
(Fascicle orientation)
49
48
50
52
51
Muscle Identification
54
55
56
53
57
Word Bank (Not all words will be used)
A. Pectoralis malor
E. Tranversus abdominus
I. Orbicularis oculi
M. Unipennate
B. Bipennate
F. Parallel
J. Triceps brachii
N. Deltoid
C. Multipennate
G. External Oblique
K. Circular
O. Cubic
D.Fusiform
H. Rectus abdominus
L. Convergent
Form B
Name_______________________________Hr__________Date__________________________
1.__________
20. ___________
39.___________
2.__________
21.___________
40.___________
3.__________
22.___________
41.___________
4.__________
23.___________
42.___________
5.__________
24.___________
43.___________
6.__________
25.___________
44.___________
7.__________
26.___________
45.___________
8.__________
27.___________
46.___________
9.__________
28.___________
47.___________
10._________
29.___________
48.___________
11._________
30.___________
49.___________
12._________
31.___________
50.___________
13._________
32.___________
51.___________
14._________
33.___________
52.___________
15._________
34.___________
53.___________
16._________
35.___________
54.___________
17._________
36.___________
55.___________
18._________
37.___________
56.___________
19._________
38.___________
57.___________
V. Choose TWO of the following to answer (3 pts each)
What are the three types of muscle tissue and identify where each type can be found
What are the three organelles that are modified for muscle sell specific functions? (List the
muscle cell names)
Name and describe a muscle disorder talked about in class. Include how this disorder is treated
What gives slow twitch muscles their red appearance and what advantage does slow twitch
muscles have over fast twitch?
***Extra Credit*** (3 pts)
What are you looking forward to doing now that the weather is starting to warm up?