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3 TYPES OF MUSCLE
Muscles
Question | Answer |
---|---|
3 TYPE OF MUSCLE CELLS | SKELETAL, CARDIAC, SMOOTH MUSCLE |
SKELETAL MUSCLE | ATTACH TO BONE PROVIDE MOVEMENT & SUPPORT PARALEL, CYLINDRICAL CELLS WITH STRIATIONS - UP TO 12" LONG (LARGEST) OF THE 3 |
MULTINUCLEATE | SKELETAL MUSCLE CELL |
SKELETAL MUSCLE UNDER WHICH CONTROL | VOLUNTARY - UNDER CONSCIOUS CONTROL CONTRACTS RIPIDLY, TIRES EASILY - EXERTS VARYING AMOUNTS TO FORCE |
CARDIAC | FORMS HEART WALL, CONTRACTIONS PUMP BLOOD STRIATED, UNINUCLEATED |
CARDIAC CONTAINS | INTERCALATED DISC - INTERCELLULAR CONNECTIONS BETWEEN CELLS 1) DESMOSOMES - PROVIDE STRENGTH 2) GAP JUNCTIONS - SPEADS CONTRACTION IMPULSE FROM CELL TO CELL |
CARDIAC MUSCLE IS - VOLUNTARY OR INVOLUNTARY | INVOLUNTARY - CONTRACTS AT STEADY RATE; RESPONDS TO ANS, HORMONES |
SMOOTH MUSCLE | FOUND IN VALLS OF HOLLOW ORGANS USUALLY 2 LAYERS - LONGITUDINAL, CIRCULAR * UNINUCLEATE, NON STRIATED |
SMOOTH MUSCLE IS INVOLUNTARY OR VOLUNTARY | INVOLUNTARY - CONTRACTS SLOWLY, GENERATES SUSTAINED CONTRACTIONS RESPONDS TO ANS HORMONES HELP BRAKE UP MOVE FOOD, FLOODS THRU BODY - ELIMINATES WASTES |