Comp I Muscle Origins/Insertions (Attachments)

Weeks 1-3

Attachments of the Trapezius are:

• Nuchal Ligament

• Spinous processes of thoracic vertebrae

• Clavicle

• Spine of scapula

Attachments of the Levator Scapulae are:

• Transverse processes of cervical vertebrae

• Superior angle of scapula

Attachments of Rhomboid Major

• Spinous Processes of thoracic vertebrae

• Medial border of scapula

Attachments of Latissimus Dorsi

– Thoracolumbar fascia
– Iliac crest
– Ribs 10–12
– Thoracic and lumbar transverse processes
– Intertubular sulcus of humerus (bicipital groove)

Attachments of Pectoralis Major:

• Clavicle

• Sternum

• Greater tubercle

Attachments of Serratus Anterior:

• Lateral Surface of Ribs 1-9

• Medial border of scapula

Attachments of Pectoralis Minor:

• Ribs 3-5

• Coracoid process of scapula

Attachments of Supraspinatus:

• Supraspinous Fossa

• Greater tubercle

Attachments of Infraspinatus:

• Infraspinous Fossa

• Greater tubercle

Attachments of Subscapularis:

• Subscapular Fossa

• Lesser tubercle

Attachments of Teres Major:

• Inferior Angle of Scapula

• Bicipital groove

Attachments of Deltoid:

• Spine of Scapula

• Acromion

• Clavicle

• Deltoid tuberosity of humerus

Attachments of Teres Minor:

• Lateral Border of Scapula

• Greater tubercle

Attachments of short head of Biceps Brachii:

• Coracoid process of the scapula

• Radial tuberosity

Attachments of Coracobrachialis:

• Coracoid Process of Scapula

• Medial shaft of humerus

Attachments of Brachialis:

• Anterior surface of humerus

• Coronoid process of ulna

Attachments of Pronator Teres:

• Medial epicondyle

• Shaft of radius

Attachments of the Flexor Carpi Radialis:

• Medial epicondyle

• Base of 1-2 metacarpals

Attachments of Palmaris Longus

• Medial Epicondyle

• Palmar aponeurosis

Attachments of Flexor Digitorum Superficialis:

• Medial Epicondyle

• Base of middle phalanx

Attachments of Flexor Carpi Ulnaris:

• Medial Epicondyle

• Base of 5th metacarpal

Attachments of Abductor digit minimi:

• Pisiform

• Base of 5th proximal phalanx

Attachments of the 3-4 Lumbricals:

• Flexor digitorum tendons

• Extensor expansion of 4th/5th digits

Attachments of Dorsal Interosseous Muscles:

• Adjacent surfaces of metacarpals

• Base of the proximal phalanx and the extensor expansion of the corresponding finger

Attachments for Adductor Pollicis:

• Capitate, second, and third metacarpals

• Proximal Phalanx of the Thumb

Attachments of Flexor Digitorum Profundus:

• Anterior Surface of Ulna

• Distal end of Phalanxes 2-5

Attachments of Flexor Pollicis Longus:

• Anterior Surface of Radius

• Base of the Thumb

Attachments of the Pronator Quadratus:

• Anterior surface of ulna

• Anterior surface of radius

Attachments of the Opponens Pollicis:

• Flexor retinaculum

• First metacarpal

Attachments of the Abductor Pollicis Brevis:

• Flexor retinaculum

• Proximal phalanx of thumb

Attachments of the Flexor Pollicis Brevis:

• Anterior surface of radius

• Base of the distal phalanx of the thumb

Attachments of the 1-2 Lumbricals:

• Flexor Digitorum Tendons

• Extensor expansion of 2nd and 3rd digits

The attachment of the Long Head of the Triceps Brachii is the:

Infraglenoid tubercle of scapula

Attachments of Brachioradialis:

• Supracondylar ridge of distal humerus

• Styloid process of radius

Attachments of the extensor carpi radials longs:

• Lateral epicondyle

• 2nd metacarpal

Attachments of the Extensor Carpi Radialis Brevis:

• Lateral epicondyle

• 3rd metacarpal

Attachments of the Extensor Digitorum:

• Lateral Epicondyle

• Extensor Expansion of Digits 2-5

Attachments of the Extensor Digiti Minimi:

• Lateral Epicondyle

• Extensor Expansion of 5th Digit

Attachments of the Extensor Carpi Ulnaris:

• Lateral epicondyle

• Base of the metacarpal bone of the 5th digit

Attachments of the Supinator:

• Lateral epicondyle

• Lateral aspect of proximal radius

Attachments of the Abductor Pollicis Longus:

• Posterior surfaces of the radius and ulna

• Base of the thumb

Attachments of the Extensor Pollicis Brevis:

• Base of the thumb

• Dorsal aspect of base of proximal phalanx of thumb

Attachments of the Extensor Pollicis Longus:

• Posterior surface of ulna

• Base of the distal phalanx of the thumb

Attachments of the Extensor Indicis is the:

• Posterior surface of ulna

• Extensor expansion of index finger

Attachments of Rhomboid Minor:

• Spinous processes of cervical and thoracic lumbar

• Medial border of scapula

Attachments of External Intercostals:

• Inferior border of rib above

• Superior border of rib below

Attachments of Internal Intercostals:

• Inferior border of rib above

• Superior border of rib below

Attachments of the innermost intercostals:

• Medial aspect of rib above

• Superior border of rib below

Attachments of the Transversus Thoracis:

• Xiphoid process

• Internal surfaces of ribs

Attachments of the diaphragm:

• Xiphoid Process, internal Surfaces of ribs

• Central tendon

Attachments of Erector Spinae:

• Sacral crest

• Spinous processes of thoracic and lumbar vertebrae

Attachments of Multifidus:

• Sacrum, Illium, Transverse processes of thoracic and lumbar vertebrae

• Spinous processes of cervical, thoracic, and lumbar vertebrae

Attachments of Semispinalis:

• Transverse processes of cervical, thoracic, and lumbar vertebrae

• Spinous processes of cervical vertebrae

Attachment of the Lateral Head of the Triceps Brachii is the:

Posterior surface of humerus

Attachments of the Medial Head of the Triceps Brachii are:

Posterior surface of humerus, olecranon process of ulna

Attachment of Triceps Brachii

Olecranon process of ulna

The attachment of the Long Head of the Biceps Brachii is the:

Supraglenoid tubercle of the scapula