Big back/shoulder muscles

Question 1

All 12 sites

Answer 1

Corocoid

Suprascapular Notch

Superior Margin

Superior Angle

Lateral Margin

Inferior angle

Medial Margin

Spine of Scapula

Acromium

Glenoid Fossa

Infraspinous Fossa

Supraspinous Fossa

Question 2

Origins, 4

Answer 2

Superior nuchal line

Occipital protuberance

Medial margin of migamentum nuchae

Spinous process of C7-T12

Question 3

Lateral Attachments

(Insertions)

Answer 3

Superior edge of the crest of the spine of the scapula,

Acromion,

Posterior border of lateral 1/3 of clavicle

Question 4

Innervation

Function

Answer 4

Innervation:
Cranial Nerve XI: aka Accessory Nerve

Elevates and rotates the scapula,

Middle fibers retract scapula,

Lower fibers depress scapula

Question 5

Answer 5

Question 6

Attachments, Movements

4 Orig.

1 Insert.

Answer 6

Orig. Spinous process of lower six thoracic vertebrae, Thoracolumbar fasia to the spinous processes of the lumbar vertebrae, Iliac crest, Lower 3-4 ribs.

Insert. Floor of intertubercular sulcus.

Move. Adduction, Medial rotation, Extension.

Question 7

Latissimus Dorsi Innervation

Answer 7

Thoracodorsal Nerve.

Question 8

Identify these muscles. What do they hold in place?

Answer 8

Levator Scapulae

Rhomboid Minor

Rhomboid Major

Scapula.

Question 9

Levator Scapula

A?
N?
F?

Answer 9

Origin: Transverse process of C1 and C2 and Posterior tubercles of transverse processes of C3 and C4.

Insertion: Posterior surface of medial border of scapula from superior angle to root of the spine of the scapula.

Dorsal Scapular Nerve

Elevates Scapula

Question 10

Trio innervation

Answer 10

Question 11

Rhomboid Minor

A?
N?

F?

Answer 11

Origin: Lower end of ligamentum nuchae. Spinous proesses of C7 and T1.

Insertion: Posterior surface of medial border of scapula at the root of the spine of the scapula

Dorsla Scapular Nerve.

Elevates and Retracts Scapula.

Downward rotation of Scapula.

Question 12

Rhomboid Major

A?
N?
F?

Answer 12

Origin: Spinous processes of T2-T5 and intervening supraspinous ligaments.

Insertion: Posterior surface of medial border of scapula from root of the spine of the scapula Inferior angle.

Dorsal Scapular Nerve.

Elevates and retracts scapula.

Downward rotation of scapula.

Question 13

Triceps Brachii

(Posterior Fibers)

A?
N?
F?

Answer 13

Long head:Origin: Infraglenoid tubercle on scapula.

Insertion: Medial and lateral heads of olecranon process on the ulna. (Common tendon insertion)

Radial Nerve

Extension of forearm and at glenohumeral joint.

Accessory adductor!!!!