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