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anatomy muscles
| Question | Answer |
|---|---|
| actin: | light colored |
| myosin: | dark colored |
| A band: | mysosin AND actin (super dark) |
| i band: | actin |
| H band: | myosin (dark) |
| Z band: | seperates/in between sacromeres and looks like a Z lol |
| M band/line: | middle of 1 sacromere |
| relaxes vs contracted sacromeres: | relaxed: less overlap btwn dark and light section contracted: more overlap btwn dark and light section ONLY myosin changes (dark) |
| creatine phosphagen: | -no oxygen -energy source: CP -used for sprinting so like 15 secs of energy -only 1 ATP |
| anaerobic: | -no oxygen -energy source: glucose -only 2 ATP -sprinting so like 30-60 secs |
| aerobic: | -jogging/walking so can go for a long period of time -uses oxygen -lots of energy sources -36 ATP |
| sternocleidomastoid: | -side of neck -flexes |
| trapezius: | -triangle on the back of shoulderblade -extends neck |
| deltoid: | -collarbone area -abducts arm |
| biceps: | -arm in FRONT -flexes elbow |
| triceps: | -arm in BACK -extends elbow |
| flexus abdominis: | -abs |
| quadriceps: | -leg in FRONT -flex hip |
| hamstrings: | -leg in BACK -extend hip |
| gluteus maximus: | -butt area -thigh abduction and adduction |
| tendon vs ligament: | tendon: connects muscle to bone ligament: connects bone to bone |
| how does the muscles in the arm are able to move joint? | by contracting/pulling bones from tendons. aka prime mover vs antagonist |
| flexion: | decreases angle |
| extension: | increases angle |
| aDDuction: | towards midline |
| aBDuction: | away from midline |
| inversion: | how i sit "comfy" at dance class aka twist inward |
| eversion: | opp on how i sit in dance aka twist outward |
| area btwn Z line is... | sacromere |
| insertion: | movable bone to dorsal side |
| golden rules of muscles: | - cross at least 1 joint -proximal to joint crossed -2 attatchments -muscles only pull, never push -insertion moves towards origin |
| 3-5 secs for no oxygen | ok |
| calcium ions bond to _______ | troponin |
| when muscles need more ATP, you need _______ | creatine phosphate (CP) |
| what is the cause of muscle fatigue? | calcium leaking out of channels |
| musclels flex spine = | the answer that shows abs |
| use of cartilage: | decrease friction and ease movement |
| rigor mortis: | lack of ATP when muscles become stiff when u die |
| anatagonist of knee muscle is.... | hamstring |
| muscle fascicles are seperated by...... | perimysium |
| actin filament - myo filament | ok |
| neurotrasmitter: | acepog... |
| crossbridge is a connection of..... | myosin/thick and actin/thin filaments |
| during contraction, ______ will slide together | all of the above (thin and thick) |
| what causes calcium binding? | from action potential. released calcium binds to troponin |