Final answer:
The ischioanal (ischiorectal) fossae are shallow spaces located on the posterior side of the pelvis, between the ischial tuberosities and the an*l canal. They contain fat, blood vessels, nerves, and lymph nodes and play a role in supporting pelvic organs and allowing for defecation.
Step-by-step explanation:
The wedge-shaped areas on either side of the an*l canal in humans are called ischioanal (ischiorectal) fossae. The area between the genitalia and the anus is known as the perineum, and it includes these fossae. The skin borders the ischioanal fossae inferiorly and the pelvic diaphragm superiorly.
Important anatomical features found within each fossa include the an*l canal, blood vessels, nerves, and fat. These fossae are crossed by the pudendal nerve, artery, and vein, which contribute to the perineum's vascular supply and innervation.
Medical practitioners must comprehend the anatomy of the ischioanal fossae in order to perform perineal procedures and treat disorders that impact this area.