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anatomy quiz 3
muscular system
| Questionhttp://www.studystack. | Answer |
|---|---|
| 4 functions: | *movement *structures/postures *heal productions *protection |
| movement: | all body movement depends of muscle action |
| structure/posture: | muscle accounts for @ least 50% body weight |
| heal productins: | wounds close after time, fascia re-closes an open area. |
| Protection: | limits movement to avoid injury:golgi tendon organ/muscle spindle |
| 1.muscle: | skeletal (voluntary) A. attached to bone B. slow twitch/fast twitch |
| 2.muscle: | cardiac (involuntary) A. heart b. controls itself & its rhythm: mechanical/electrical C. designed for endurance |
| 3.muscle | smooth (involuntary) A. found in visera, blood vessels, intestines B. designed to maintain long contractions. |
| 1.muscle cell: | muscle fiber |
| 2.endomysium: | surrounds fibers |
| 3.perimysiun: | surrounds fasicles |
| 4.muscle: | bundles of fasicles |
| 5.epimysium: | surrounds muscle |
| deep fascia: | surrounds groups, become tendons @ the end of muscle |
| aponeurosis: | broad sheet of connective tissue |
| retinaculum: | bandage like connective tissue, holds structures in place. |
| muscletone: | partial state of muscle |
| contraction: | posture |
| flacid: | lack of tone |
| hypertonicity: | too much tone |
| agonist: | prime mover |
| synorgist: | assists the prime mover |
| antagonist: | opposes prime mover |
| fixator: | stabilize proximal aspects so that dostal can move to it's max |
| isometric contraction: | no change in movement |
| isotonic contraction: | change in muscle lenght |
| lever system: | *class 1 (FAR) *class 2 (FRA): wheel barrel; power speed *CLASS 3 (AFR): bicep curl |
| suport: | holds bones in place; every bone is connected to another bone by ligaments (except hyoid) |
| synovial joints: | hinge/ball socket/gliding/saddle |
| amphiarthrotic | slightly movable, vertabrae |
| synarthrotic: | no mov't skull sutures |
| synovial darthrotic: | freely moving; knees, elbows, shoulders |
| flexability: | 3 different joints in body; based on mov't or degree of mov't |
Created by:
jesmaria
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