21 Anterior inferior iliac spine. Spina iliaca anterior inferior. Bony process at the anterior margin of the ilium. Origin of the rectus femoris muscle. A C
22 Posterior superior iliac spine. Spina iliaca posterior superior. Bony process at the posterior end of the iliac crest. A C
23 Posterior inferior iliac spine. Spina iliaca posterior inferior. Bony process at the superior end of the greater sciatic notch. A C
24 Iliac fossa. Fossa iliaca. A concavity forming the internal surface of the ala of the ilium. C
25 Gluteal surface. Facies glutealis. External surface of the ala of the ilium. A
26 Anterior gluteal line. Linea glutealis anterior. A flat ridge situated somewhat in the middle of the ala of the ilium between the fields of origin of the gluteus medius and minimus muscles. A
27 Posterior gluteal line. Linea glutealis posterior. Bony ridge between the fields of origin of the gluteus medius and maximus muscles. A
28 Inferior gluteal line. Linea glutealis inferior. Bony ridge above the acetabulum between the fields of origin of the gluteus minimus and rec-tus femoris muscles. A
29 Sacropelvic surface. Facies sacropelvina. Surface of the dorsal segment of the ilium facing the sacrum and consisting of the following two parts. C
30 Auricular surface. Facies auricularis. The ear-shaped surface which articulates with the sacrum. It is covered with fibrocartilage. C
31 Iliac tuberosity. Tuberositas iliaca. Roughened area behind and above the auricular surface. Gives attachment to the sacroiliac ligaments. C
"g Right hip bone, medial view
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.