Structures
Sliding Filament Theory
Muscle Contraction
Identify the Muscle
Miscellaneous
100
What myofilament is attached to the Z line?
Actin
100
Where is calcium stored?
SR (sarcoplasmic reticulum)
100
You are doing a pushup. What muscle is the agonist?
pectoralis major
100
What muscles are these?
Intercostals
100
What are the deep back muscles that extend the length of your spine?
Errector Spinae
200
What is the smallest part of the skeletal muscle?
Sarcomere
200
What initially blocks the myosin binding site?
tropomyosin
200
Give an example of each
Isometric
Isotonic
Isometric- plank
Isotonic- bending the knees
200
What muscle is this?
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Buccinator
200
What are the three muscles used for chewing?
Masseter, Buccinator, Temporalis
300
What is the name for the muscle cell membrane?
Sarcolemma
300
For troponin to rotate what has to attach to it?
Calcium
300
Give the definition of an antagonist.
A muscle that's action opposes the action of the agonist/prime mover
300
What are these two muscles?
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1- Sartorius
2- Vastus Lateralis
300
Name all 4 abdominal muscles and note which one is the most deep.
Rectus Abdominis
External Obliques
Internal Obliques
Transverse Abdominis (most deep)
400
What creates the striated appearance on skeletal muscles?
Alternating I and A bands
400
What role does acetylcholine play in muscle contraction?
Released from neuron and crosses the synaptic cleft to attach to the muscle cell to stimulate muscle contraction
400
What is an involuntary muscle contraction called?
Muscle twitch
400
Which one is semimembranosus?
B
400
What are the 4 rotator cuff muscles?
subscapularis, supraspinatus, infraspinatus, teres minor
500
There are 7 fascicle arrangements. Pick 4 and give me the name. For example H=blank
A=circular
B=convergent
C=parallel
D=unipennate
E= multipennate
F= fusiform
G= bipennate
500
Draw a picture that represents a cross bridge.
500
You are doing a bicep curl. Name the agonist, antagonist, and one synergist.
Agonist- Biceps Brachii
Antagonist- Triceps Brachii
Synergist- Brachialis, Brachioradialis
500
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Name the 3 anterior lower leg muscles we discussed. Bonus points for most lateral to most medial.
Most Lateral- peroneus longus
Middle- peroneus brevis
Most Medial- tibialis anterior
500
Name all 4 quadricep muscle and all 3 hamstring muscles.
Quadriceps- Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius
Hamstrings- Biceps Femoris, Semitendinosus, Semimembranosus