A&P lab practical 2

Scapula (R)

Clavicle (L)

Glenoid fossa/cavity

Acromion process

Coracoid process

Infraspinous fossa

Supraspinous fossa

Subscapular fossa

Superior border

Medial border

Lateral border

Superior angle

Inferior angle

Acromial end

Sternal end

Supraspinatus

O: Supraspinous fossa of scapula

I: greater tubercle of humerus

A: Shoulder Abduction,
stabilizes humerus

Infraspinatus

O: Infraspinous fossa of scapula

I: Greater tubercle of Humerus
A: Shoulder lateral (external) rotation, stabilizes humerus

Teres minor 

O: Lateral boarder of scapula
I: Greater tubercle of humerus
A: Shoulder lateral (external) rotation,
adduction, stabilizes humerus

Subscapularis

O: Subscapular fossa of scapula
I: Lesser tubercle of humerus
A: Shoulder medial (internal)
rotation, stabilizes humerus

Deltoid

O: Lateral clavicle, acromion, scapular
spine
I: Deltoid tuberosity of the humerus
A: Shoulder abduction
N: Axillary Nerve

Teres Major

O: Inferior angle of the scapula
I: Lesser tubercle of the humerus
A: Shoulder extension, shoulder adduction, and
medial (internal) rotation

Latissimus Dorsi

O: Spinous processes of T7-L5 & Iliac crest
I: Intertubercular groove of the humerus
A: Shoulder extension, shoulder
adduction, and shoulder medial
(internal) rotation

Trapezious

O: Occipital bone, spinous processes of
thoracic vertebrae (C7-T12)
I: Acromion, spine of scapula, clavicle
A: Scapular retraction, elevation and
stabilization
N: Cranial Nerve XI – Accessory Nerve

Levator Scapulae

O: Transverse processes of C1-C4
I: Medial boarder of scapula
A: Scapular elevation

Rhomboid major:

O: Spinous processes of T2-T5
I: Medial boarder of scapula
A: Stabilize and retract scapula

Rhomboid minor

O: Spinous processes of C7-T1
I: Medial boarder of scapula
A: Stabilize and retract scapula

Pectoralis minor 

O: ribs 3-5
I: Coracoid process of scapula
A: Scapular depression and
protraction

Serratus anterior

O: Ribs 1-8
I: Medial boarder of scapula
A: Scapular protraction

Pectoralis major

O: Clavicle, sternum
I: Greater tubercle of humerus
A: Shoulder adduction,
Shoulder internal (medial)
rotation

Coracobrachialis

O: Coracoid process of the scapula
I: Shaft of the humerus
A: Shoulder Adduction and flexion
N: Musculocutaneous nerve

Pectoral Girdle

Humerus

Greater tubercle 

Lesser tubercle

Intertubercular groove

Deltoid tuberosity

Trochlea

Capitulum

Coronoid fossa

Olecranon fossa

Medial epicondyle

Lateral epicondyle

Radial fossa

The radius 

Head of Radius

Radial tubercle

Styloid process of radius

Ulna

Coronoid process ulna

Olecranon process ulna

Trochlear notch

Styloid process ulna

Head of ulna

Wrist carpals

Straight Line To Pinky, Here Comes The Thumb

Scaphoid

Lunate

Triquetrum

Pisiform

Hamate

Capitate

Trapezoid

Trapezium

• Metacarpals (I, II, III, IV, V)
• Proximal phalanges
• Middle phalanges (note no middle
phalanx present in thumb)
• Distal phalanges

Biceps Brachii OIAN
- Long Head
- Short Head

O: Short Head: Coracoid Process
Long Head: Supraglenoid tubercle
I: Radial Tuberosity of Radius
A: Elbow Flexion
N: Musculocutaneous Nerve

Brachialis (OIAN)
*Deep to the Biceps Brachii*

O: Distal humerus
I: Coronoid process of the ulna
A: Elbow Flexion
N: Musculocutaneous nerve

Brachioradialis (OIAN)

O: Lateral Supracondylar ridge at
distal end of humerus
I: Radial styloid process
A: Synergist of Forearm Flexion
*when forearm is partially flexed and semi-pronated
N: Radial Nerve

Triceps Brachii (OIAN)
• Long Head
• Lateral Head
• Medial Head

O: 

Long Head: Infraglenoid tubercle of
scapula
Lateral Head: Posterior shaft of
humerus
Medial Head: Distal shaft of humerus
I: Olecranon of ulna
A: Elbow Extensor
N: Radial Nerve

Pronator Teres (OIA)
*Deep to brachioradialis

O: Medial epicondyle of humerus
I: Midshaft of radius
A: Pronates forearm

Supinator (OIA)
*Deep to the wrist extensors*

O: Lateral epicondyle of humerus
and proximal ulna
I: Proximal end of the radius
A: Supinates Forearm

Flexors of the wrist and digits OAN

O: Medial epicondyle of humerus

I: Wrist and digits
A: Flexion of wrist and digits
N: Median Nerve

Extensors of the wrists and digits OAN

O: Lateral epicondyle of humerus
I: Wrist and digits
A: Extension of wrist and digits
N: Radial nerve

Anconeus A 

Extension