. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. Fig. 2-33. Left radius, caudal view. 1 articular surface of head, 2 articular circumference, 3 neck, 4 shaft, 5 carpal articular surface, 6 medial styloid process, 7 articular surface for the ulna, 8 radial tuberosity, 9 head. forms a groove, sulcus unguicularis, between the ar- ticular surface and the unguicular process. The groove houses the base of the nail. The flexor tu- bercle has axial and abaxial solear foramina for blood vessels and nerves. Sesamoid Bones. Two proximal sesamoid bones, ossa sesamoidea proximalia, are prese
. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. Fig. 2-33. Left radius, caudal view. 1 articular surface of head, 2 articular circumference, 3 neck, 4 shaft, 5 carpal articular surface, 6 medial styloid process, 7 articular surface for the ulna, 8 radial tuberosity, 9 head. forms a groove, sulcus unguicularis, between the ar- ticular surface and the unguicular process. The groove houses the base of the nail. The flexor tu- bercle has axial and abaxial solear foramina for blood vessels and nerves. Sesamoid Bones. Two proximal sesamoid bones, ossa sesamoidea proximalia, are present on the palmar surface of the metacarpophalangeal joints of digits 2-5 (Fig. 2-36). A distal sesamoid bone, 05 sesamoideum distale, is present on the pal- mar surfaces of the distal interphalangeal joints of digits 2-5. The first digit does not have palmar ses- amoid bones. However, a large sesamoid bone is sometimes present on the dorsal aspect of the in- terphalangeal joint. Pelvic Girdle (Fig. 2-37). The pelvic girdle consists of the ilium, ischium, pubis and acetabular bone. The four bones fuse to form a hip bone, os coxae. Left and right ossa coxae fuse on the midline to form the pelvis. The pelvic girdle articulates me- dially with the wing of the sacrum and laterally with. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bezuidenhout, A. J. (Abraham Johannes), 1942-; Evans, Howard E. (Howard Edward), 1922-. Lawrence, KS : American Society of Mammalogists
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