. Comparative anatomy. Anatomy, Comparative. 252 COMPARATIVE ANATOMY femur to the foot. Two flattened condyles articulate with the femur. The ligament of the patella is attached to the ventral surface of the upper extremity of the tibia. The shaft of the tibia is triangular having an anterior sharp crest from which the tibialis anterior muscle has its origin. The lower extremity of the tibia is smaller than the upper. Articulation. Fig. 209.—Stages in the development of the extremities in mammals. (Redrawn after Bardeen, Lewis and Corning.) A is a cross section of a monkey embryo showing an ar
. Comparative anatomy. Anatomy, Comparative. 252 COMPARATIVE ANATOMY femur to the foot. Two flattened condyles articulate with the femur. The ligament of the patella is attached to the ventral surface of the upper extremity of the tibia. The shaft of the tibia is triangular having an anterior sharp crest from which the tibialis anterior muscle has its origin. The lower extremity of the tibia is smaller than the upper. Articulation. Fig. 209.—Stages in the development of the extremities in mammals. (Redrawn after Bardeen, Lewis and Corning.) A is a cross section of a monkey embryo showing an arm bud. (Redrawn from Arey after KoUman.) 5 is a seven-week human embryo in left lateral aspect. (Redrawn after Corning.) C is an eight-week human embryo in left lateral aspect. (Redrawn after Corning.) Z? is a nine-week human embryo in left lateral view. is with the talus bone of the ankle. The large process of the medial malleolus extends from its lower outer border. (Fig. 206) The Fibula. The fibula is the slenderest of the long bones. It func- tions chiefly as a basis of attachment of leg muscles which serve as extensors and flexors of the toes. Its upper extremity articulates with the tibia, its lower is prolonged into a conspicuous lateral malleolus. The Tarsus. The tarsal or ankle bones number seven. The proximal tarsals are the talus and calcaneus. Three ctmeiform bones and a cuboid form the distal tarsals. Between the two on the inner side of the instep. 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 Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
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