Chp 7 Packet #1 (starting with pg 130)
Labeling Exercise Fig 7-1
1. tendon; 2. skeletal muscle; 3. epimysium; 4. blood vessels & nerves; 5. perimysium; 6. muscle fascicle; 7. endomysium; 8. muscle fiber
Objective 3
1. a; 2. b; 3. d; 4. a; 5. b
Labeling exercise Fig 7-2
1. actin; 2. A band; 3. I band; 4. M line; 5. myosin 6. Z line
Labeling Exercise Fig 7-3
1. resting sacromere; 2. active site exposure; 3. cross- bridge attachment; 4. pivoting of myosin head; 5. cross-bridge detachment; 6. myosin reactivation
1. temporalis; 2. orbicularis oculi; 3. zygomaticus; 4. orbicularis oris; 5. pectoralis major; 6. deltoid; 7. biceps brachii; 8. rectus abdominis; 9. external oblique; 10. adductor muscles; 11. gracilis; 12. sartorius; 13. tribialis anterior; 14. frontalis; 15. masseter; 16. sternocleidomastoid; 17. transversus abdominis; 18. tensor fascia lata; 19. rectus femoris; 20. vastus lateralis; 21. vastus medialis; 22. pernoeus longus
Fig 7-5
1. gluteus maximus; 2. semimembranosus; 3. biceps femoris; 4. semitendinosus; 5. gastrocenemius; 6. occipitalis; 7. trapezius; 8. deltoid; 9. triceps brachii; 10. latissiumus dorsi; 11. external oblique; 12. gluteus medius; 13. soleus
Concept Map 1 - Muscle Tissue
1. heart; 2. striated; 3. smooth; 4. involuntary; 5. nonstriated; 6.bones; 7. multinucleated
Concept Map 2 - Muscle Structure
1. fascicles; 2. myofibrils; 3. sarcomeres; 4. actin; 5. Z line; 6. thick filaments; 7. H zone
Study Guide - Chp 7
1. Epimysium; perimyseium; endomysium Pg 186
2. actin, mysoin
3. All the muscle finbers controlled by a single motor neuron
4. Axon; skeletal muscle fiber; synaptic cleft; synaptic terminal; sarcolemma; vesicles; ACh; AChE Pg 191
5. acetylcholine causes changes in the srcolemma, releasing Ca++; aceetylcholinesterase breaks down ACh and removes it from the synaptic cleft
6. A muscle cell is called a muscle fiber and bundles of these are called fascicles and bundles of those make up a skeletal muscle.
7. True
8. a. sarcoplasmic reticulum; b. myosin; c. actin; d. t tubules; e. sarcomere
9. myofibrils lying parallel and sarcomeres lying side by side.
10. synaptic terminal of the axon
11. Helps ADP convert to ATP.
12. Latic acid which converts to hydrogen ion (interferes with cell's ph and enzyme activity) and lactate ion
14. The active site is uncovered allowing cross-bridge formation between acting and myosin.
15. mitochondria
16. Tension pulls an object toward the source of tension; compression pushes an object away from the source of compression; Muscles can only perform tension (contraction).
17. incomplete tetanus
18. striated
19. t tubules
20. Fatigue is when a muscle can no longer contract despite neural stimulation. I t is caused by the exhaustion of energy sources or a buildup of lactic acid.
21. neurotransmitter; acetylcholine
22. tendons; aponeuroses
23. sliding filament model; 2, 1, 4, 3
24. atrophy
25. calcium ions
26. dark; light
27. cardiac involuntary striated; smooth involuntary; skeletal involunatry striated
28. It is the part of the membrane with ACh receptors
29. Activation of more and more motor units until you get a mooth steady increase in muscular tension.
30. myofibrils; actin; myosin