Lab E: Origins and Insertions

Pectoralis minor

Origin: Ribs 3-5

Insertion: Scapula: Coracoid process

Serratus anterior

Origin: Ribs 1-9

Insertion: Scapula: Medial border

Trapezius

Origin: Vertebrae: Cervical 7 - Thoracic 12; Occipital

Insertion: Scapula: Spine, acromion; Clavicle

Levator scapulae

Origin: Vertebrae: Cervical 1 - Cervical 4

Insertion: Scapula: Superior angle, medial border

Rhomboid minor

Origin: Vertebrae: Cervical 7 - Thoracic 1

Insertion: Scapula: Medial border

Rhomboid major

Origin: Vertebrae Thoracic 2 - Thoracic 5

Insertion: Scapula: Medial border

Pectoralis major

Origin: Clavicle, sternum, ribs

Insertion: Humerus: Intertubercular sulcus

Latissimus dorsi

Origin: Vertebrae: Thoracic 7 - Lumbar 5; Ribs 9-12; Iliac crest

Insertion: Humerus: Intertubercular sulcus

Teres major

Origin: Scapula: Inferior angle

Insertion: Humerus: Intertubercular sulcus

Coracobrachialis

Origin: Scapula: Coracoid process

Insertion: Humerus: Middle shaft

Supraspinatus

Origin: Scapula: Supraspinous fossa

Insertion: Humerus: Greater tubercle

Infraspinatus

Origin: Scapula: Infraspinous fossa

Insertion: Humerus: Greater tubercle

Teres minor

Origin: Scapula: Lateral border

Insertion: Humerus: Greater tubercle

Subscapularis

Origin: Scapula: Subscapular fossa

Insertion: Humerus: Lesser tubercle

Deltoid

Origin: Scapula: Acromion, spine; Clavicle

Insertion: Humerus: Deltoid tuberosity

Brachialis

Origin: Humerus: Anterior distal shaft

Insertion: Ulna: Coronoid process, ulnar tuberosity

Biceps brachii, long head

Origin: Scapula: Supraglenoid tubercle

Insertion: Radius: Radial tuberosity

Biceps brachii, short head

Origin: Scapula: Coronoid process

Insertion: Radius: Radial tuberosity

Triceps brachii, long head

Origin: Scapula: Infraglenoid tubercle

Ulna: Olecranon

Triceps brachii, lateral head

Origin: Humerus: Middle shaft

Insertion: Olecranon

Triceps brachii, medial head

Origin: Humerus: Distal shaft

Insertion: Ulna: Olecranon

Brachioradialis

Humerus: Lateral supracondylar ridge

Insertion: Radius: Distal shaft

Anconeus

Origin: Humerus: Lateral epicondyle

Insertion: Ulna: Proximal shaft

Pronator quadratus

Origin: Ulna: Distal shaft

Insertion: Radius: Distal shaft

Pronator teres

Origin: Humerus & ulna

Insertion: Radius: Proximal shaft

Supinator

Origin: Humerus & ulna

Insertion: Radius: Proximal shaft

Flexor carpi radialis

Origin: Humerus: Medial epicondyle

Insertion: Metacarpals II & III

Flexor carpi ulnaris

Origin: Humerus: Medial epicondyle

Insertion: Carpals & metacarpal V

Palmaris longus

Origin: Humerus: Medial epicondyle

Insertion: Flexor retinaculum and palmar aponeurosis

Flexor digitorum superficialis

Origin: Humerus: Medial epicondyle; Radius: Middle shaft

Insertion: Middle phalanges II-V

Flexor digitorum profundus

Origin: Ulna: Proximal shaft

Insertion: Distal Phalanges II-V

Flexor pollicis longus

Origin: Radius: Middle shaft

Insertion: Distal phalanx I

Extensor carpi radialis longus

Origin: Humerus: Lateral supracondylar ridge

Insertion: Metacarpal II

Extensor carpi radialis brevis

Origin: Humerus: Lateral epicondyle

Insertion: Metacarpal III

Extensor digitorum

Origin: Humerus: Lateral epicondyle

Insertion: Middle, distal phalanges II-V

Extensor digiti minimi

Origin: Humerus: Lateral epicondyle

Insertion: Middle, distal phalanges V

Extensor carpi ulnaris

Origin: Humerus: Lateral epicondyle

Insertion: Metacarpal V

Abductor pollicis longus

Origin: Radius & ulna

Insertion: Metacarpal I

Extensor pollicis brevis

Origin: Radius: Distal shaft

Insertion: Proximal phalanx I

Extensor pollicis longus

Origin: Ulna: Middle shaft

Insertion: Distal phalanx I

Extensor indicis

Origin: Ulna: Distal shaft

Insertion: Middle, distal phalanges II

Diaphragm

Origin: Xiphoid, ribs, costal cartilages, lumbar vertebrae

Insertion: Central tendon of diaphragm

External intercostals

Origin: Inferior margins of ribs

Insertion: Superior margins of ribs

Internal intercostals

Origin: Superior margins of ribs and costal cartilages

Insertion: Inferior margin of ribs & costal cartilages

External abdominal oblique

Origin: Ribs 5-12

Insertion: Ilium: Iliac crest, pubis, linea alba

Internal abdominal oblique

Origin: Ilium: Iliac crest, thoracolumbar fascia

Insertion: Ribs 10-12, linea alba

Transverse abdomnial

Origin: Ilium: Iliac crest, costal cartilages 7-12, thoracolumbar fascia

Insertion: Linea alba, pubis

Rectus abdominis

Origin: Pubis: Pubic crest, pubic symphysis

Insertion: Xiphoid process, costal cartilages 5-7

Spinalis thoracis

Origin: Spinous processes of vertebrae: Thoracic 11 - Lumbar 3

Insertion: Spinous processes of vertebrae: Thoracic 2 - Thoracic 8

Longissimus thoracis

Origin: Spinous processes of lumbar vertebrae, sacrum

Insertion: Transverse processes of lumbar and thoracic vertebrae, ribs

Iliocostalis lumborum

Origin: Ilium: Iliac crest, sacrum

Insertion: Transverse processes of lumbar vertebrae, ribs 5-10

Quadratus lumborum

Origin: Ilium: Iliac crest

Insertion: Transverse processes of lumbar vertebrae, rib 12