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muscles MTI
muscle overview
| Question | Answer |
|---|---|
| Antagonist | Opposes action of another muscle. |
| Prime Mover | primary actor in movement |
| Synergist | acts w/another muscle to produce movement |
| Muscles are identified by: | location, size, action, shape |
| Frontalis | raises eyebrows |
| Zygomaticus | makes us smile |
| Latissimus dorsi | provides extention, adduction and rotation of the arm inwardly. |
| Triceps Brachii | extends the arm at the elbow |
| Diaphragm | seperates the thoracic cavity from the abdominal cavity |
| Rectus Abdominus | flexes vertebral column and compresses the abdominal wall |
| Gastrocnemius | flexes the foot and aids in moving the body foward |
| Atrophy | wasting of muscles due to disease over a long period of time |
| Fibromyalgia | widespread musculoskeletal pain and fatigue disorder |
| Muscular Dystrophy | MD genetic disorder weakness and degeneration of skeletal muscle |
| Myasthenia gravis | CHRONIC neuromuscular disease |
| Sprain | injury to a ligament |
| Strain | injury to a muscle or a tendon |
| Muscular system functions | movement, tonicity, heat production, stability |
| Fascia | connective tissue held together by a fibrous sheath called... |
| Muscles must.... | ...be supplied with proper oxygen and nutrition to perform properly |
| Muscles are composed of | 75% water, 20% protien, 5% carbs, lipids, and salts |
| 3 types of muscle tissue | Cardiac, smooth, skeletal |
| Skeletal muscles | allow movement by being attached to bones, voluntary |
| Smooth muscles | found in digestive, bladder, involuntary |
| Cardiac muscle | quadrangular, cross striated, heart |
| how many different muscles are there | 600 |
| Epimysium | thin covering which surrounds muscle |
| Muscles are attached to bone | by tendons |
| Aponeuroses | wide thin sheet-like tendon that attached muscle to muscle |
| Perimysium | responsible for dividing muscles into sections called fasicles |
| Endomysium | covering made up of connective tissue that surrounds individual muscle cell |
| Origin | site of attachment to bone that is more fixed or still |
| Insertion | site of attachment to a bone that moves |
Created by:
colleenl2009
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