END 1 Lab 1: Pelvis and Perineum

OBJECTIVES:

END1.1.1 Identify the bony walls, the joints and the ligaments of the pelvis.

END1.1.2 Identify the bony and ligamentous boundaries of the perineum.

END1.1.3 Identify the muscles of the pelvis, including the pelvic diaphragm and its components.

END1.1.4 Identify the urogenital diaphragm and its components.

END1.1.5 Indicate the relationship of the pelvic diaphragm and the urogenital diaphragm to the genitourinary tracts in the female.

END1.1.6 Identify the rectum, anus, and the anal sphincters.

Pelvis and Perineum: Module 1 - Page 1 of 5

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Begin with the female pelvis. The anatomical structures you will examine are more clearly visible in this 3D representation.

Identify the following key bony landmarks using the illustration and 3D model. Check off each of the following as you identify them on the 3D model:

Pubic crest

Pubic symphysis

Pubic tubercle

Anterior superior iliac spine (ASIS)

Ischial spine

Coccyx

Rotate the 3D model to visualize these structures from different angles. Developing a full spatial understanding of pelvic anatomy is essential for clinical application.

	What are the bony boundaries separating the abdominal cavity and pelvic cavity?
The pelvic inlet (also called the superior pelvic aperture) forms the boundary between the abdominal cavity and the true pelvic cavity.

	What are the bony boundaries of the pelvic inlet?
The pelvic inlet is defined by the pelvic brim, which includes the following structures (moving posterior to anterior): Sacral promontory, Ala of the sacrum, Arcuate line (of the ilium), Pectineal line (pecten pubis), and Pubic crest