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HAP Chapter 8
HA&P vocab
| Question | Answer |
|---|---|
| calat- | something inserted |
| intercalted disk | membranous band that connects cardiac muscle cells |
| erg- | work |
| synergist | muscle that works with a prime mover to produce a movement |
| hyper- | over, more |
| muscular hypertrophy | enlargement of muscle fibers |
| inter- | between |
| laten- | hidden |
| latent period | time between application of a stimulus and the beginning of a muscle contraction |
| myo- | muscle |
| myofibril | contractile structure within a muscle cell |
| sarco- | flesh |
| sarcoplasm | material(cytoplasm) within a muscle fiber |
| syn- | together |
| tetan- | stiff |
| tetanic contraction | sustained muscular contraction |
| -troph | well fed |
| actin | protein that, with myosin, contracts muscle fibers |
| antagonist | muscle that opposes a prime mover |
| aponeurosis | sheetlike tendon that attaches certain muscles to other parts |
| fascia | sheet of fibrous connective tissue that encloses a muscle |
| insertion | the end of a muscle attached to a movable part |
| motor neuron | neuron that transmits impulses from central nervous systems to an effector |
| motor unit | motor neuron and its associated muscle fibers |
| muscle impulse | impulse that travels along sarcolemma and down transverse tubules |
| myosin | protien that, with actin, contracts and relaxes muscle fibers |
| neurotransmitter | chemical that axon end secretes to control another neuron or an effector |
| origin | end of muscle that attaches to a immovable part |
| oxygen debt | amount of oxygen required after physical exercise to convert accumulated lactic acid to glucose |
| prime mover | muscle responsible for a particular body movement |
| recruitment | increase in number of motor units activated as stimulation intensity increases |
| sarcomere | structural and functional unit of a myofibril |
| threshold stimulus | stimulation level that must be exceeded to elicit nerve impulse or muscle contraction |
Created by:
caitlynnham
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