Muscles of the Pelvic Outlet

Two muscular sheets span the outlet of the pelvis—a deeper pelvic diaphragm and a more superficial urogenital diaphragm. The pelvic diaphragm forms the floor of the pelvic cavity, and the urogenital diaphragm fills the space within the pubic arch. Figure 9.34 and table 9.11 show the muscles of the male and female pelvic outlets. They include the following:

Pelvic Diaphragm Urogenital Diaphragm

Levator ani Superficial transversus perinei

Coccygeus Bulbospongiosus

Ischiocavernosus Sphincter urethrae

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Essentials of Human Physiology

Essentials of Human Physiology

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.

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