Muscle Anatomy Test 1

Front 1

Pectoralis minor

Back 1

O: anterior-superior surface of ribs 3-5
I: coracoid process of scapula
A: depresses and protract shoulder, rotates scapula downward, elevates ribs

Front 2

Serratus anterior

Back 2

O: anterior and superior margins of ribs 1-8/9
I:anterior surface of vertebral border of scapula
A: protract shoulder rotates scapula upward

Front 3

trapezius

Back 3

O: occipital bone, ligamentum nuchae, and spinous process of thoracic vertebrae.
I: clavicle, acromium process and spine of scapula.
A: Elevate, retract, depress and rotate scapula upward, elevate clavicle and extend neck

Front 4

levator scapulae

Back 4

O: transverse process of first four cervical vertebrae
I: vertebral border of scapula
A:elevates scapula

Front 5

Rhomboid major

Back 5

O:spinous process of superior thoracic vertebrae
I: vertebral border of scapula from spine to inferior angle
A: adducts scapula and performs downward rotation

Front 6

Rhomboid minor

Back 6

O: spinous process of vertebrae C7 - T1
I: vertebral border of scapula near spine
A: adducts scapula and performs downward rotation

Front 7

subclavius

Back 7

O: R1
I: inferior border of the clavicle
A:depresses and protracts shoulder

Front 8

Pectoralis major

Back 8

O: cartilages of Ribs 2-6, body of sternum, and inferior medial portion of clavicle
I: crest of greater tubercle and lateral lip of intertubercular groove of humerus
A: flexion, adduction and medial rotation at shoulder

Front 9

Latissimus dorsi

Back 9

O: spinous process of inferior thoracic and all lumbar vertebrae, ribs 8-12, and lumbodorsal fascia
I: floor of intertubercular groove of humerous
A: extension, adduction, and medial rotation at shoulder

Front 10

deltoid

Back 10

O: clavicle, acromion process and spine of scapula
I: deltoid tuberosity of humerus
A: abduction at shoulder, flexion and medial rotation, extension and lateral rotation

Front 11

supraspinatus

Back 11

O:supraspinous fossa of scapula
I:greater tubercle of humerus
A: abduction at shoulder

Front 12

infraspinatus

Back 12

O: infraspinous fossa of scapula
I: greater tubercle of humerus
A: lateral rotation at shoulder

Front 13

teres major

Back 13

O: inferior angle of scapula
I: intertubercular groove of humerus
A: extension, adduction and medial rotation at shoulder

Front 14

teres minor

Back 14

O: lateral border of scapula
I: greater tubercle of humerus
A: lateral rotation at shoulder

Front 15

subscapularis

Back 15

O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: medial rotation at shoulder

Front 16

coracobrachialis

Back 16

O:coracoid process of the scapula
I: medial margin of shaft of humerus
A: adduction and flexion at shoulder

Front 17

biceps brachii (short head)

Back 17

O: coracoid process of the scapula
I: radial tuberosity
A: flexion at elbow and shoulder, supination

Front 18

biceps brachii (long head)

Back 18

O: supraglenoid tubercle of the scapula
I: radial tuberosity
A: flexion at elbow and shoulder, supination

Front 19

brachialis

Back 19

O: anterior distal surface of humerus
I: ulnar tuberosity
A: flexion at elbow

Front 20

brachioradialis

Back 20

O: ridge superior to the lateral epicondyle of humerus
I: lateral aspect of styloid process of radius
A: flexion at elbow

Front 21

triceps brachii (lateral head)

Back 21

O: superior lateral margin of humerus
I: olecranon process of ulna
A: extension at elbow

Front 22

triceps brachii (long head)

Back 22

O: infraglenoid tubercle of scapula
I: olecranon process of ulna
A: extension at elbow, extension and adduction at the shoulder

Front 23

triceps brachii (medial head)

Back 23

O: posterior surface of humerus inferior to radial groove, .
I:olecranon process of ulna
A: extension at elbow

Front 24

anconeus

Back 24

O: posterior inferior surface of lateral epicondyle of humerus
I:lateral margin of olecranon process of ulna
A: extension at elbow

Front 25

pronator quadratus

Back 25

O: anterior and medial surfaces of distal portion of ulna
I: anterolateral surface of distal portion of radius
A: pronation

Front 26

pronator teres

Back 26

O: medial epicondyle of humerus and coronoid process of ulna
I: midlateral surface of radius
A: pronation

Front 27

supinator

Back 27

O: lateral epicondyle of humerus, annular ligament and ridge of near radial notch of ulna
I: anerolateral surface of radius distal to the radial tuberosity
A: supination

Front 28

flexor carpi radialis

Back 28

O: medial epicondyle of humerus
I: bases of second and third metacarpals
A: flexion and abduction at wrist

Front 29

flexor carpi ulnaris

Back 29

O: medial epicondyle of humerus, adjacent medial surface of olecranon and anteromedial portion of ulna
I: pisiform, hamate and base of 5th Metacarpals
A: flexion and adduction at wrist

Front 30

palmaris longus

Back 30

O: medial epicondyle of humerus
I: palmar aponeurosis and flexor retinaulum
A: flexion at wrist

Front 31

extensor carpi radialis longus

Back 31

O: lateral supracondylar ridge of humerus
I: base of 2nd metacarpal
A: extension and abduction at wrist

Front 32

extensor carpi radialis

Back 32

O: lateral epicondyle of humerus
I: base of 3rd metacarpal
A: extension and abduction at wrist

Front 33

extensor carpi ulnaris

Back 33

O: lateral epicondyle of humerus, adjacent dorsal surface of ulna
I: base of 5th metacarpal
A: extension and adduction at wrist

Front 34

extensor digitorum

Back 34

O: lateral epicondyle of humerus
I: posterior surfaces of phalanges 2-5
A: extension at finger joint and wrist

Front 35

Rectus Abdominus

Back 35

O: superior surface of pubis around symphysis
I: inferior surfaces of costal cartilages of ribs 5-7 and xiphoid process
A: depresses ribs, flexes vertebral column, compresses abdomen

Front 36

Spinalis thoracis

Back 36

O: spinous processes of inferior thoracic and superior lumbar vertebrae
I: spinous processes of superior thoracic vertebra
A: extends vertebral column

Front 37

longissimus thoracis

Back 37

O: broad aponeurosis and transverse process of inferior thoracic and superior lumbar vertebrae, joins iliocostalis
I: transverse processes of superior vertebrae and inferior surface of ribs
A: extends verebral column, alone--each produces lateral flexion to that side.

Front 38

illiocostalis thoracis

Back 38

O: superior borders of inferior seven ribs medial to the angles
I: upper ribs and transverse processes of last cervical vertebrae
A: stabilizes thoracic vertebrae in extension

Front 39

multifidus

Back 39

O: sacrum and transverse process of each vertebra
I: spinous process of 3rd and 4th more superior vertebrae
A:extends vertebral column and rotates toward opposite side

Front 40

quadratus lumborum

Back 40

O: iliac crest and iliolumbar ligament
I: last rib and transverse process of lumbar vertebrae
A: depress ribs, alone each side laterally flexes vertebral column