muscle physiology
by jeremy dobbins
1. special features of skeletal muscle cells
1.1. myofibers
1.2. sarcoplasm
1.3. sarcoplasmic reticulum
1.4. calcium
2. skeletal muscle cell struture
2.1. myofiber
2.2. myofibrils
2.3. myofilamets
3. sarcomere/myofilaments
3.1. thick filaments
3.2. thin filaments
3.3. tropomyosin
3.4. actin
3.5. troponin
4. parts of sacromere
4.1. A band
4.2. I band
4.3. H zone
4.4. Z line
5. skeletal muscle function
5.1. nerve inpulse triggers the release of calcium
5.2. calcium binds to troponin
5.3. myosis head engages with the actin
5.4. Myosin head releases actin
5.5. myosin crossbridge returns to original position
6. chemistry of muscle contration
6.1. ATP
6.2. Mitochondria
6.3. aerobic cellular respiration
6.4. creatine phosphate
6.5. anarobic cellular respiration
6.6. muscle fatigue
6.7. build-up of lactic acid
7. funtions of the muscle system
7.1. body movement
7.2. balance and posture
7.3. heat production
7.4. hearbeat
7.5. respiration
7.6. constriction of organs and blood vessels
8. smooth muscle properties
8.1. cell shape: spindle
8.2. nucleus: single
8.3. control: involuntary
8.4. striations: none
9. cardiac muscle properties
9.1. cell shape: branched
9.2. nucleus: single
9.3. control: involuntary
9.4. striations: yes
10. skeletal muscle properties
10.1. cell shape: long, cylindrical
10.2. nucleus: multiple
10.3. control: voluntary
10.4. striations: yes