Upper Appendicular Skeleton (BYU EXSC 440 Lab)

Clavicle

collar bone

Sternal end of clavicle

articulates with sternum

Acromial end of clavicle

articulates with scapula

Conoid tubercle

prominence on inferior surface of the lateral end of clavicle

Trapezoid line of clavicle

laterally, on the inferior surface

Scapula

shoulder blade

Lateral border

Medial border of scapula

Superior angle

uppermost aspect of scapula where medial border meets superior border

Inferior angle

bottom point of scapula

Suprascapular notch

Coracoid process

process above the glenoid cavity that permits muscle attachment

Acromion process

extension of the scapula, which forms the superior point of the shoulder

Scapular spine

Divides posterior aspect of scapula into supraspinatus fossa (above) and infraspinatus fossa (below)

Supraspinous fossa

Infraspinous fossa

Subscapular fossa

Glenoid cavity

socket in scapular that receives head of humerus

Supraglenoid tubercle

prominence superior to the glenoid cavity

Infraglenoid tubercle

prominence inferior to the glenoid cavity

Humerus

upper arm bone

Head of humerus

articulates with glenoid cavity of scapula

Anatomic neck of humerus

a subtle indentation at the articular margin of the humeral head

Surgical neck of humerus

Lesser tubercle

Greater tubercle

Large lateral prominence; site of the attachment of rotator cuff muscles

Intertubercular (bicipital) groove

groove between the greater and lesser tubercles of the humerus

Shaft of humerus

Deltoid tuberosity

raised area on lateral surface of humerus to which deltoid muscle attaches

Radial groove

Runs obliquely down the posterior aspect of the shaft.

Lateral epicondyle of humerus

Medial epicondyle of humerus

Lateral supracondylar ridge

narrow, bony ridge located along the lateral side of the distal humerus, superior to the lateral epicondyle

Medial supracondylar ridge

Capitulum

Radial fossa

small lateral depression; receives the head of the radius when the forearm is flexed

Trochlea of humerus

articulates with ulna

Coronoid fossa

anterior depression that receives the coronoid process of the ulna during forearm flexion

Olecranon fossa

located on the posterior side of the distal end of the humerus superior to the trochlea and articulates with the olecranon process of the ulna

Ulnar groove

between the medial epicondyle and trochlea

Ulna

medial bone of the forearm

Olecranon process

projection at the upper end of the ulna that forms the bony point of the elbow

Trochlear notch

articulates with trochlea of humerus

Coronoid process of ulna

Ulnar tuberosity

roughened area located on the anterior, proximal ulna inferior to the coronoid process

Shaft of ulna

Radial notch

articulates with head of radius

Supinator crest

short vertical ridge inferior to radial notch

Interosseous border of ulna

Head of ulna

distal end of ulna

Styloid process of ulna

Radius

lateral bone of the forearm

Fovea of radius

Cup on top of radius

Head of radius

articulates with capitulum of humerus

Neck of radius

narrowed region immediately distal to the head of the radius

Radial tuberosity

Oblique line of radius

Shaft of radius

Interosseous border of radius

narrow ridge located on the medial side of the radial shaft; for attachment of the interosseous membrane between the ulna and radius bones

Styloid process of radius

Dorsal (Lister's) tubercle

Huge tubercle on the posterior of the distal radius.

Ulnar notch

depression on the medial distal end of the radius, articulates with the head of the ulna

Scaphoid

Scaphoid (disarticulated)

Lunate

Lunate (disarticulated)

Triquetrum

Pisiform

Pisiform (disarticulated)

Hamate

Hamate (disarticulated)

Hook of hamate

Projection on the anterior surface of the hamate, providing attachment for the transverse carpal ligament

Capitate

Capitate (disarticulated)

Trapezoid

Trapezium

Trapezium (disarticulated)

Tubercle of trapezium

Metacarpals

Phalanges