Anterior Axio-Appendicular Muscles + Deltoid and Omohyoid

Question 1

Pectoralis major (clavicular head and sternocostal head)
Clavicular: 1 PA,
Sternocostal: 3 PA
1 DA, 2N (5R), 2 A together, 2 A alone

Answer 1

PA:
\+ clavicular head: anterior surface of medial half of clavicle
\+ sternocostal head: 
     anterior surface of sternum
     superior 6 costal cartilages
     aponeurosis of external oblique 

DA:
+ lateral lip of intertubercular sulcus of humerus

N:
+ lateral and medial pectoral nerves
+ clavicular head: C5, C6*
+ sternocostal head: C7, C8, T1

A:
together:
+ adducts and medially rotates shoulder
+ draws scapula anteriorly and inferiorly
alone:
+ clavicular head: flexes shoulder joint
+ sternocostal head: extends shoulder joint from flexed position

Question 2

pectoralis minor

1 PA, 2 DA, 1N2R, 1A

Answer 2

PA:
+ 3rd-5th ribs near costal cartilages

DA:
+ medial border of scapula
+ superior surface of coracoid process of scapula

N:
+ medial pectoral nerve (C8, T1)

A:
+ stabilizes scapula, draws it inferiorly and anteriorly against thoracic wall

Question 3

Serratus anterior

1 PA, 1 DA, 1N3R, 2A

Answer 3

PA:
+ external surfaces of lateral parts of 1st-8th ribs

DA:
+ anterior surface of medial border of scapula

N:
+ long thoracic nerve (C5, C6, C7)

A:
+ protracts scapula
+ rotates scapula

Question 4

Subclavius

1 PA, 1 DA, 1N2R, 2 A

Answer 4

PA:
+ junction of 1st rain and costal cartilage

DA:
+ inferior surface of middle third of the clavicle

N:
+ subclavian nerve (C5*, C6)

A:
+ anchors clavicle
+ depresses clavicle

Question 5

Deltoid (clavicular part and acromial part)

2 PA, 1 DA, 1 N2R, 3A

Answer 5

PA:
+ lateral third of the clavicle
+ acromion and spine of the scapula

DA:
+ deltoid tuberosity of the humerus

N:
+ axillary nerve (C5, C6)

A:
anterior (clavicular) part:
     \+ flexes the shoulder joint
     \+ medially rotates the shoulder joint
middle (acromial) part:
     \+ abducts the shoulder joint
posterior (spinal) part:
     \+ extends the shoulder joint
     \+ laterally rotates the shoulder joint

Question 6

omohyoid

1 O, 1I, 3NR, 3A

Answer 6

O:
+ superior border of scapula near suprascapular notch

I:
+ inferior border of the hyoid bone

N:
+ C1-C3 by a branch of ansa cervicalis

A:
+ depresses hyoid bone
+ retracts hyoid bone
+ steadies hyoid bone