skeletal muscle Word Scramble
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| Question | Answer |
| 1st class lever system | R-F-E. seesaw. occipital condyles. |
| 2nd class lever system | F-R-E. wheelbarrow. foot flexion. |
| 3rd class system | F-E-R. shovel. biceps. |
| mnemonic for skeletal heirarchy | every monkey prefers friends eating m& m's on monday |
| every monkey prefers friends eating m&m's on mondays | epimysium, muscle organ, perimysium, fasicle, endomysium, endomysium, muscle fibers, myofibrils, myofilaments |
| define Sarcolema | plasma membrane of muscle fiber |
| fxn of neuromuscular jxn | where motor neurons synapse with muscle fibers. step 1 of muscle contraction. has 3 parts. |
| 3 parts of neuromuscular jxn | axon terminal (synaptic knob), synaptic cleft, motor end plate |
| axon terminal (synaptic knob) | releases neurotransmitter, AcH |
| CONNECTIVE TISSUE SHEATHS | EPIMYSIUM, PERIMYSIUM, ENDOMYSIUM |
| EPIMYSIUM | surrounds whole muscle, made of WFCT |
| PERIMYSIUM | surrounds the fascicle, made of areolar CT/WFCT |
| ENDOMYSIUM | surrounds individual muscle fibers, made of areolar CT |
| fasicle | bundle of muscle fibers: surrounded by perimysium, contains nuclei, endomysium and bundles of muscle fiber |
| muscle fibers | is a muscle cell: surrounded by endomysium, contains sarcoplasm, myofibrils, nuclei and satellite cells |
| muscle organ | muscle made up of various tissues, including skeletal, nerve, connective, vascular |
| myofibril | elongated contractile threads found in striated muscle cells |
| myofilaments | filaments of myofibrils constructed from proteins |
| sarcoplasm | "cytoplasm" in muscle fiber |
| sarcoplasmic reticulum | made of smooth ER, stores and releases calcium |
| motor end plate | folded sarcolema, site of Ach receptors |
| t-tubule | carries signal to sarcoplasmic reticulum, made od sarcolema |
Created by:
sometimeslacey