Muscular Tissue
Filaments
Action Potential
Muscles
Misc.
100
What is the term for the muscle's ability to stretch?
Extensibility
100
Which regulatory protein blocks myosin from binding to actin?
Tropomyosin
100
Where does the action potential occur?
Neuromuscular Junction
100
What is the attachment of muscle tendon to movable bone?
Insertion
100
What is the difference between concentric and eccentric contractions?
Concentric contractions cause the muscle to shorten and Eccentric contractions cause the muscle to lengthen.
200
Distinguish the differences between skeletal and smooth muscle.
Skeletal muscle is striated and movement is voluntary. Smooth muscle movement is involuntary and the tissue contains no striations.
200
What are the regulatory proteins?
Tropomyosin and troponin
200
What is the neurotransmitter that communicates across synaptic cleft?
Acetylcholine
200
Describe the second class lever.
Fulcrum is at one end, effort at the other end, and the resistance in between. (Think wheelbarrows)
200
What are the three ways to produce ATP?
Creatine Phosphate, Anaerobic Glycolysis, Aerobic Respiration
300
What is the term for dense irregular connective tissue that supports and surrounds muscles of similar function, and has 3 layers that extend to skeletal muscle.
Fascia
300
What does excitation in muscle tissue mean?
The occurrence of an action potential
300
How many acetylcholine receptors do motor end plates have?
30-40 million
300
What fascicle arrangement is short and directed obliquely toward the tendon?
Pennate
300
What is the cherophobia the fear of?
The fear of fun
400
What is the term for a flat sheet of fibrous connective tissue?
Aponeurosis
400
What are the steps of the contraction cycle?
ATP hydrolysis, attachment of myosin and actin, power stroke, and detachment of myosin and actin
400
What are the four steps of a nerve impulse?
Release of acetylcholine, activation of ACh receptors, production of muscle action potential, and termination of ACh activity.
400
What is the term for muscles that assist the prime mover to steady a movement?
Synergists
400
Why is there continued heavy breathing following ending of exercise?
Body temperature is elevated, Muscles are still at an elevated state, and tissue repair is taking place
500
What is the inner most layer of reticular fibers inside of the fascicle extension between individual muscle fibers?
Endomysium
500
What happens following death?
Ca2+ lead from sarcoplasmic reticulum, myosin her binds to actin, ATP synthesis stops.
500
What are junctional folds?
Grooves that increase surface area of the membrane exposed to the synaptic cleft
500
Describe what pronators do?
Turn the hand palm downward
500
Which fibers are dark red and have large amounts of myoglobin and capillaries?
Slow oxidative fibers
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