Lab 6: Pectorial Girdle/ Brachial Plexus

Question 1

OIANB of Pectoralis Minor?

Answer 1

Anterior surface of ribs 3,4,5 Coracoid process of scapula Protraction of scapula Downward rotation of scapula Depression of scapula Medial Pectoral nerve Pectoral Artery

Question 2

OAINB of serratus anterior

Answer 2

Outer surface of 1st 8 ribs Anterior surface of vertebral border of scapula Protraction of scapula Hold scapula to thoracic wall Upward rotation of scapula Long thoracic nerve Lateral thoracic artery

Question 3

OAINB of subclavius

Answer 3

Costal cartilage of ribs 1 Middle 1/3 of inferior border of clavicle Stabilize clavicle during shoulder movement Nerve to subclavius Clavicular branch of thoracoacrominal trunk

Question 4

OAINB of pectoralis major?

Answer 4

Clavical head: middle of clavicle And sternal head: sternum and costal cartilage of 1st 6 ribs Lateral lip of bicipital (intertubercular) groove of humerus Adduction of shoulder Horizontal adduction of shoulder Internal rotation of shoulder Clavical head: flexion of humerus/ medial+ lateral pectoral nerve Sternal head: extension of flexed humerus/ medial pectoral nerve Pectoral nerve

Question 5

Bicipital Groove Muscles attachment?

Question 6

Tips for Brachial Plexus Root, cord, division?

Question 7

What is this part of scapula? Muscle Insertions?

Answer 7

Lateral (axillary) border of scapula

Teres Major (Upper 1/3 of axillary border)

Teres Minor (Upper 2/3 of axillary border)

Question 8

What is this part of scapula? Muscle Insertions?

Answer 8

Spine of Scapula

Posterior Deltoid

Question 9

Muscle Insertions on Supraglenoid Tubercle of the Scapula

Muscle Insertions on Infraglenoid Tubercle of the scapula

Answer 9

Long head of biceps

long head of triceps

Question 10

What is this part of scapula? Muscle Insertions?

Answer 10

Coracoid process of scapula

Pec Minor

Short head of biceps

Coracobrachialis

Question 11

What is this part of scapula? What attaches to it?

Answer 11

Glenoid Fossa of Scapula

Head of humerus

Question 12

Muscle insertion on supraspinous fossa of the scapula

Answer 12

Supraspinatus

Question 13

What is this part of scapula? What is its position to scapula? Muscle Insertions?

Answer 13

infraspinous fossa of scapula

posterior side of scapula

infraspinatus

Question 14

What is this part of scapula? Is it on anterior or post of scapula?

Answer 14

Superior Border of Scapula

Question 15

What is this part of scapula? What is its position to scapula? Muscle Insertions?

Answer 15

Subscapular Fossa of Scapula

Anterior Surface of Scapula

Subscapularis

Question 16

What is this part of scapula? Muscle Insertions?

Answer 16

Inferior border of scapula

Teres Major

Question 17

What is this part of scapula?

Answer 17

Acromion Process of Scapula

Question 18

What is this part of scapula? Muscle Insertions?

Answer 18

Medial (vetebral) border of scapula

serratus anterior

Question 19

What is this part of scapula?

Answer 19

Suprascapular Notch of Scapula

Question 20

Border of cross-section of axilla

Answer 20

Medial: ribs

anterior: pec major

Lateral: latissimus dorsi / teres major

Question 21

Name the muscles insertions for each color

Answer 21

Pink: Pec major

Light green: Lats

Green: Teres Major