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kmganatomy2
upper extremities and pectoral girdle
| Question | Answer |
|---|---|
| medial end of clavicle articulates with... | manubrium and first rib. (sternal end) |
| lateral end of each clavicle joins with... | the scapulae. (acromial end) |
| scapulae | lies on dorsal side of rib cage; located between ribs 2-7 |
| glenoid cavity | articulates with the head of the humerous and forms shoulder joint which is classified as a ball and socket joint |
| acromion | process that articulates with acromial end of clavical |
| humerus | only bone of the arm |
| head of humerous | located on the proximal end of the humerus and fits into the glenoid cavity of scapula |
| trochlea | medial condyle that articulates with the ulna |
| capitulum | lateral condyles that articulate with the radius |
| olecranon fossa | located superior to the trochlea on posterior surface of humerous |
| coronoid fossa | directly located superior to the trochlea and anterior surface of the humerus. |
| ulna | main bone responsible for forming the elbow joint with humerus |
| radioulnar joints | proximal and distal joints |
| olecranon process | prominent projection on the proximal end of ulna that fits into the olecranon fossa |
| coronoid process | prominent projection on the proximal end of the ulna that fits into the coronoid fossa |
| radial notch | smooth depression on the lateral side of the proximal end of the ulna |
| radius | superiour surface of the head of the radius that articulates with the capitulum |
| ulnar notch | located on distal end of radius and receives head of ulna |
| carpal bones-proximal | scaphoid, lunate, triquetral, pisiform |
| carpal bones-distal | trapezium, trapezoid, capitate, hamate |
| how many metacarpals | 5. radiate distally from the wrist |
| phalanges | 28 except for thumb,which has two, each finger has three phalanges |