Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . Female. Male. small; in the female (fig. 129), it is large. The greatestdiameter is from the sacrum to the pubis in the female, in con-sequence of the sacrum being less curved than in the male. Thespace comprised between the brim and the outlet is called thetrue pelvis, in which the pelvic viscera are lodged. On eachside of the pubic arch a large oval hole (obturator foramen),is formed by the ischium and pubis. It Fig. 131. gives passage
Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . Female. Male. small; in the female (fig. 129), it is large. The greatestdiameter is from the sacrum to the pubis in the female, in con-sequence of the sacrum being less curved than in the male. Thespace comprised between the brim and the outlet is called thetrue pelvis, in which the pelvic viscera are lodged. On eachside of the pubic arch a large oval hole (obturator foramen),is formed by the ischium and pubis. It Fig. 131. gives passage to blood vessels and nerves,and is partly closed by a ligament. Oneach side of the obturator hole, but some-what behind that opening, is the cup-shaped cavity for receiving the head of thethigh bone (acetabulum) (fig. 131, e),formed by the junction of the ilium (i),. 138 THE THIGH BONE. the ischium (n), and pubis (in). The continuity of the mar-gin is interrupted at the under and fore part, by a notch (/),which is filled up with ligament. Opposite the notch is a cavity(#), to which the round ligament of the /emur is attached. Theaxis of the pelvis is so placed that the weight of the trunk Fig. 132. Fig. 133. Fig. J34.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
