Section 2 Muscle Attachments, bone features, and innervations

Ilium - tuber coxae

muscle attachment:

• ext and int abdominal oblique mm.

• transversus abdominis m.

Ilium - auricular surface

etc:

• articulates with auricular surface of sacrum to form the SI joint

ilium - arcuate line

etc:

• lateral border of the pelvic inlet

ischium - ischiatic tuberosity

muscle attachment:

• ischiocavernosus m.

etc:

• sacrotuberous ligament attachment

• crus of penis or clitoris attachment

ischium - ischiatic spine

muscle attachment:

• coccygeus m.

ischium - ischiatic arch

etc:

• part of the ventral border of pelvic outlet

pubis - pecten

muscle attachment:

• abdominal muscles via prepubic tendon

etc:

• ventral border of the pelvic inlet

sacrum - auricular surface

etc:

• articulates with the auricular surface of the ilium

sacrum - promontory

etc:

• dorsal border of the pelvic inlet

External abdominal oblique m.

cranial - ribs 4-13

caudal - tuber coxae and pubis (via prepubic tendon)

dorsal - thoracolumbar fascia

ventral - linea alba

Internal abdominal oblique m.

cranial - ribs 12-13

caudal - tuber coxae and pubis (via prepubic tendon)

dorsal - thoracolumbar fascia

ventral - linea alba

transversus abdominis m.

cranial - ribs 8-13 (on their deep surface)

caudal - tuber coxae and pubis (via prepubic tendon)

dorsal - thoracolumbar fascia and transverse processes of lumber vertebrae

ventral - linea alba

rectus abdominis

cranial - rib 1 + sternum

caudal - pubis (via prepubic tendon)

ventral - linea alba