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17. Phalanges- the most distally located bones in the forearms and
hind limbs; there are four on each forearm and hind limb in the Necturus
18. Sacral rib- articulates the sacral vertebrae to the pelvic girdle 19. Ilium- ossified and extends ventrally from its articulation with the sacral rib toward the acetabulum 20. Ischium- the ventral half of the pelvic girdle is a flat plate; the ischium is the posterior part of the this 21. Pubis- the anterior portion of the pelvic girdle plate; separated from the ischium by the obturator foramen 22. Femur- the largest bone in the hindlimb; has two ridges (cresta ventralis and cresta lateral) that provide attachment for muscles 23. Tibia- lies anteriorly in the crus 24. Fibula- lies posteriorly in the crus 25. Tarsals- six cartilaginous elements in the pes 26. Metatarsals- the proximal bone of each digit in the hindlimb 6. Trunk vertebra (lateral and anterior)- works together with the rectus abdominis muscle to support the viscera 7. Sacral vertebra (lateral and anterior)- articulates with the pelvic girdle by way of its ribs 8. Caudal vertebra- lack ribs; these vertebra have less articulation than do trunk vertebra, which allows for greater flexibility |
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