1. Name the type of muscle below that does not contain the vertical striations seen in this picture:

2. What is the name of the structure at the pointer and identity of the type of muscle below:

a) Striations/Skeletal muscle

b)b) IC disc/Cardiac IC disc/Cardiac musclemuscle

c) Muscle tear/Smooth muscle

d) Visceral musclee) Both c and d

3. What muscle is antagonistic to muscle #3 ?

a) Trapezius.Trapezius.b) Sternocleidomastoid

.c) Pectoralis minor.d) Serratus anerior.e) Rhomboideus minor. 11

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4. Identify structure A and name the ion that travels within it. T-tubules containing Na+ ionsT-tubules containing Na+ ions

A.A.

myofibrimyofibrill

sarcoplasmic sarcoplasmic reticulumreticulum

5. Name region #5. Is this muscle partially contracted ? Explain. Contracted due to actin overlapping in the H zone

a) A bandb) H zonec) Z lined) I bande) M zone

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6. Which of the following must occur in order for the Na+ gates to open and generation of an action potential within skeletal muscle?

a) Repolarization.b) Propagation of nerve impulse down the

muscle fiber.c) Ach binding to the motor end plate.c) Ach binding to the motor end plate.d) A sudden positive change in membrane potential.e) None of the above.

7. Name the muscle at the arrow:

a) Rectus abdominis

b)b) Transversus Transversus abdominisabdominis

c) External obliqued) Internal obliquee) Latissimus dorsi

8. The main action of muscle # 8 is:

a) Extends the arm at the shoulder joint

b) Stabilizes the shoulder joint

c) Abducts the arm at the shoulder joint

d)d) Extends the elbowExtends the elbowe) Adducts the arm at the

shoulder joint

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9. Which of the following are the correct actions of muscle #9?

a) Adducts and flexes the forearm

b) Extends and medially rotates the arm at the shoulder

c)c) Abducts the arm at Abducts the arm at the shoulderthe shoulder

d) Adducts and extends the arm at the shoulder

e) Adducts and flexes the arm at the shoulder

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10. Name the white connective tissue that would compartmentalize the structure at the arrow.

a)a) EndomysiuEndomysiumm

b) Epimysiumc) Perimysiumd) Fasciae) Both b and d

11. Which of the following muscles are rotator cuff muscles? Choose every letter that applies.

a)a) InfraspinatusInfraspinatus

b)b) SubscapularisSubscapularisc) Trapezius

d)d) SupraspinatusSupraspinatus

e)e) Teres minorTeres minor

12. What muscle is a synergist to muscle #12?

a) Buccinatorb) Masseterc) Orbicularis oris

d)d) TemporalisTemporalise) Zygomaticus

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13. Name the muscle at the arrow.

a) Rectus abdominisb) Transversus abdominisc) External oblique

d)d) Serratus anteriorSerratus anteriore) Latissimus dorsi

14. The main action of muscle # 14 is:

a) Extends the arm at the shoulder joint

b) Stabilizes the elbow joint

c)c) Abducts the arm at the Abducts the arm at the shoulder jointshoulder joint

d) Extends the elbowe) Adducts the arm at the

shoulder joint

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15. Name muscle #15

a) Teres minor

b)b) SternocleidomastoiSternocleidomastoidd

c) Pectoralis minord) Serratus anteriore) Coracobrachialis

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16. Which of the following states the correct actions of muscle #16?

a)a) Adducts and flexes the Adducts and flexes the arm at the shoulder jointarm at the shoulder joint

b) Extends and medially rotates the arm at the shoulder

c) Abducts the arm at the shoulder

d) Adducts and extends the arm at the shoulder

e) Abducts and extends the arm at the shoulder

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17. Name muscle #17

a) Levator scapulaeb) Trapeziusc) Rhomboideus major

d)d) Rhomboideus Rhomboideus minorminor

e) Supraspinatus1717

18. Name the type of muscle below and write two characteristics that are unique to this muscle type: Voluntary and multi-nucleated

a)a) Skeletal muscleSkeletal muscleb) Cardiac musclec) Smooth muscled) Visceral musclee) Both c and d

19. What is the insertion of muscle #19 ?

a) Lateral clavicleb) Vertebraec) Iliac crest

d)d) Anterior Anterior humerushumerus

e) Spine of scapula1919

20. Identify muscle A. What group of muscles, medial to region A, would act upon the fingers ?Flexors

a) All antebrachial musclesb) Flexor digitorum

musclesc) Extensor musclesd) Thenar muscles

e)e) BrachioradialisBrachioradialis

Supine positionSupine position

AA

21. Name muscle #21

a) Orbicularis oculib) Orbicularis orisc) Buccinatord) Frontalis

e)e) Zygomaticus Zygomaticus majormajor 2121

22. Which of the following muscles originates at two separate points on the scapula and inserts on the proximal radius?

a) Triceps brachiib) Coracobrachialis

c)c) Biceps brachiiBiceps brachiid) Brachioradialise) Subscapularis

23. Name region #23a)a) A bandA bandb) H zonec) Z lined) I bande) M line

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24. Name the white connective tissue at the arrow

a) Endomysiumb) Epimysium

c)c) PerimysiumPerimysiumd) Fasciae) Both b and d

25. Which of the following are correct actions of muscle #25 ?

a) Pulls scapula towards the ribs

b)b) Elevates the scapulaElevates the scapulac) Abducts the arm at the

shoulder jointd) Flexes the vertebraee) Flexes the head

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