. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. Fig. 2-34. Left ulna, cranial view. Insert, ulnar styloid pro- cess, caudal view. 1 olecranon tuber, 2 anconeal process, 3 trochlear incisure, 4 radial incisure, 5 lateral coronoid pro- cess, 6 medial coronoid process, 7 shaft, 8 head, 9 olec- Fig. 2-35. Left forepaw, dorsal view. I-V = metacarpals, 1-5 = digits. 1 ulna, 2 ulnar carpal bone (triquetrum), 3 third carpal bone (capitatum), 4 fourth carpal bone (hama- tum), 5 fifth metacarpal bone, 6 proximal phalanx of fifth digit, 7 middle phalanx of fifth digit, 8 distal ph
. Anatomy of the woodchuck (Marmota monax). Woodchuck; Mammals. Fig. 2-34. Left ulna, cranial view. Insert, ulnar styloid pro- cess, caudal view. 1 olecranon tuber, 2 anconeal process, 3 trochlear incisure, 4 radial incisure, 5 lateral coronoid pro- cess, 6 medial coronoid process, 7 shaft, 8 head, 9 olec- Fig. 2-35. Left forepaw, dorsal view. I-V = metacarpals, 1-5 = digits. 1 ulna, 2 ulnar carpal bone (triquetrum), 3 third carpal bone (capitatum), 4 fourth carpal bone (hama- tum), 5 fifth metacarpal bone, 6 proximal phalanx of fifth digit, 7 middle phalanx of fifth digit, 8 distal phalanx of fifth digit, 9 unguicular crest, 10 unguicular process, 1 1 ungui- cular groove, 12 extensor process, 13 second carpal bone (trapezoideum), 14 first carpal bone (trapezium), 15 radial sesamoid, 16 central carpal bone, 17 intermedioradial car- pal bone (scapholunatum), 18 radius. the head of the femur. The acetabulum, acetabu- lum, is a deep hollow on the lateral aspect of the os coxae for articulation with the head of the fe- mur. The ilium, ischium and acetabular bones con- tribute to the formation of the acetabulum. A car- tilaginous lip attached to the rim of the hollow deepens the acetabulum. The articular surface, fa- des lunata, is almost circular and caudoventrally in- complete. In the depth of the acetabulum is a small, roughened hollow, the acetabular fossa, fossa ace- tabuli, for the attachment of the ligament of the femoral head, ligamentum capitis ossis femoris. The caudoventral rim of the acetabulum bears a deep notch, the acetabular incisure, incisura acetabuli. The acetabular bone, os acetabuli, is a small, tri- angular bone located in the floor or ventral surface of the acetabulum. It fuses to the other bones of the os coxae to such an extent that it is only iden- tifiable in a young animal. The pubis, os pubis, consists of a body, corpus ossis pubis, with cranial and caudal rami. The cra- nial branch, ramus cranialis ossis pubis, extends dor- solateral
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