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| 1. | acetabulum | large, cup-shaped cavity located on the lateral side of the hip bone; formed by the junction of the ilium, pubis, and ischium portions of the hip bone |
| 2. | acromial end of the clavicle | lateral end of the clavicle that articulates with the acromion of the scapula |
| 3. | acromial process | acromion of the scapula |
| 4. | acromioclavicular joint | articulation between the acromion of the scapula and the acromial end of the clavicle |
| 5. | acromion | flattened bony process that extends laterally from the scapular spine to form the bony tip of the shoulder |
| 6. | adductor tubercle | small, bony bump located on the superior aspect of the medial epicondyle of the femur |
| 7. | anatomical neck | line on the humerus located around the outside margin of the humeral head |
| 8. | ankle joint | joint that separates the leg and foot portions of the lower limb; formed by the articulations between the talus bone of the foot inferiorly, and the distal end of the tibia, medial malleolus of the tibia, and lateral malleolus of the fibula superiorly |
| 9. | anterior border of the tibia | narrow, anterior margin of the tibia that extends inferiorly from the tibial tuberosity |
| 10. | anterior inferior iliac spine | small, bony projection located on the anterior margin of the ilium, below the anterior superior iliac spine |
| 11. | anterior sacroiliac ligament | strong ligament between the sacrum and the ilium portions of the hip bone that supports the anterior side of the sacroiliac joint |
| 12. | anterior superior iliac spine | rounded, anterior end of the iliac crest |
| 13. | apical ectodermal ridge | enlarged ridge of ectoderm at the distal end of a limb bud that stimulates growth and elongation of the limb |
| 14. | arcuate line of the ilium | smooth ridge located at the inferior margin of the iliac fossa; forms the lateral portion of the pelvic brim |
| 15. | arm | region of the upper limb located between the shoulder and elbow joints; contains the humerus bone |
| 16. | auricular surface of the ilium | roughened area located on the posterior, medial side of the ilium of the hip bone; articulates with the auricular surface of the sacrum to form the sacroiliac joint |
| 17. | base of the metatarsal bone | expanded, proximal end of each metatarsal bone |
| 18. | bicipital groove | intertubercular groove; narrow groove located between the greater and lesser tubercles of the humerus |
| 19. | calcaneus | heel bone; posterior, inferior tarsal bone that forms the heel of the foot |
| 20. | capitate | from the lateral side, the third of the four distal carpal bones; articulates with the scaphoid and lunate proximally, the trapezoid laterally, the hamate medially, and primarily with the third metacarpal distally |
| 21. | capitulum | knob-like bony structure located anteriorly on the lateral, distal end of the humerus |
| 22. | carpal bone | one of the eight small bones that form the wrist and base of the hand; these are grouped as a proximal row consisting of (from lateral to medial) the scaphoid, lunate, triquetrum, and pisiform bones, and a distal row containing (from lateral to medial) the trapezium, trapezoid, capitate, and hamate bones |
| 23. | carpal tunnel | passageway between the anterior forearm and hand formed by the carpal bones and flexor retinaculum |
| 24. | carpometacarpal joint | articulation between one of the carpal bones in the distal row and a metacarpal bone of the hand |
| 25. | clavicle | collarbone; elongated bone that articulates with the manubrium of the sternum medially and the acromion of the scapula laterally |
| 26. | coracoclavicular ligament | strong band of connective tissue that anchors the coracoid process of the scapula to the lateral clavicle; provides important indirect support for the acromioclavicular joint |
| 27. | coracoid process | short, hook-like process that projects anteriorly and laterally from the superior margin of the scapula |
| 28. | coronoid fossa | depression on the anterior surface of the humerus above the trochlea; this space receives the coronoid process of the ulna when the elbow is maximally flexed |
| 29. | coronoid process of the ulna | projecting bony lip located on the anterior, proximal ulna; forms the inferior margin of the trochlear notch |
| 30. | costoclavicular ligament | band of connective tissue that unites the medial clavicle with the first rib |
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