Question | Answer |
skeletal muscle | movement, posture, joint stability, heat |
smooth muscle | moves organs and structures |
cardiac muscle | pumps blood |
SKELETAL MUSCLE:
excitability | receive a stimulus |
SKELETAL MUSCLE:
contractility | shortens |
SKELETAL MUSCLE:
elasticity | ability to stretch |
SKELETAL MUSCLE:
extensibility | ability to reverse from contracting |
SKELETAL MUSCLE:
creep | direction movement of tissue |
SKELETAL MUSCLE:
plastic range | does not return to nature state |
how is fascia described or defined | bandage - connective tissue |
what are tendons | cords of dense CT...attach muscle to bone |
how do tendons attach to bone | Periosteum |
what is an aponeurosis | flat broad tendon |
perimysium | surrounds each fascicles |
endomysium | surrounds each cell |
epimysium | surronds each muscle belly |
what is a muscle cell | muscle fiber |
what is a fascicle | bundle of muscle cells |
what is sarcomere | part of flesh |
what is considered thick myofilaments | myosin |
what is considered thing myofilaments | actin |
what forms the "corss-bridges" during the sliding mechanism | myosin heads |
what chemicals/nutrients must be available for the myofilaments to shorten | ATP
Calcium
Acetylcholine |
what is the primary neurotransmitter for motor nerve end plate? | acetylcholine |
what is acetlycholinesterase | breaks down acetylcholine |
where does the motor neuron communicate with the muscle? | motor end plate |
the neuron or nervous cell that stimulates a group of muscle fibers that contract a unit is called | motor unit |
which organization of muscle fibers provide the most strength | Pennate |
which organization of muscle fibers provide the greatest ROM | Parallel |
what is the most common lever system | first class |
fast twitch fibers | a nareobic- few mitrochondira |
slow twitch fibers | aerobic - more mitrochondria |
what is the purpose of skeletal muscle tone? | stabilize joint, maintain posture, uncontrolled changes |
what is isotonic contraction | movement |
what is an eccentric contraction? | tension in muscle (elongated) |
what is a concentric contraction? | tension in muscle (shortening) |
what is a isometric contraction? | without movement |
joint kinesthetic receptors | monitor joint movement |
inner ear | space and friction |
origin | point does not move |
insertion | point that moves |
action | what the muscle does |
agonist | movement (prime mover) |
antagonists | opposite does not move |
synergist | helpers |
sacrolemma | muscle cell membrane |
sarcoplasmic reticulum | tuber and channels |
nucleus | the brain of cell |
muscle fiber | muscle cell |