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BIO 121-051 #4
Appendicular Skeleton - Upper Extremities
| Bone | Description |
|---|---|
| Clavicle | collarbone |
| Scapula | Shoulder blade |
| Scapular spine | shelf on posterior side |
| Acromion | large lateral tip |
| Coracoid Process | "hook" opposite the acromion |
| Supraspinous Fossa | depression above the scapular spine |
| Infraspinous Fossa | depression below the scapular spine |
| Subscapular Fossa | entire depressed anterior side |
| Glenoid Fossa | depression between coracoid process and acromion |
| Humerus | upper arm bone |
| Head of Humerus | smooth large ball on medial proximal end |
| Anatomical Neck of Humerus | groove around the head |
| Surgical Neck of Humerus | constriction just below the proximal end |
| Greater Tubercle of Humerus | knob on lateral proximal end, opposite the head |
| Lesser Tubercle of Humerus | small knob on anterior proximal end |
| Olecranon Fossa of Humerus | Depression on posterior side of distal end |
| Medial Epicondyle of Humerus | Sharp process on medial side of distal end |
| Lateral Epicondyle of Humerus | process on lateral side of distal end |
| Ulna | Larger of two lower arm bones; looks like a wrench |
| Olecranon Process of Ulna | large process at the proximal end; fits into the olecranon fossa on the humerus |
| Styloid Process of Ulna | tiny process at most distal end |
| Radius | Smaller of two bones in lower arm; lateral (thumb) side; looks like a golf tee |
| Head of Radius | Proximal end (flat, disc-shaped) |
| Radial Tuberosity | rough knob just under the head |
| Styloid Process of Radius | pointed process at most distal end |
| Carpals | wrist bones |
| Metacarpals | five long bones that form the palm of the hand |
| Phalanges | finger bones; three on each finger, two on the thumb |