Perineum: Boundaries, divisions, perineal fascia and perineal pouches

Perineum

The perineum refers to the areas both externally on the surface and internally as a shallow compartment of the body. The compartmental area of perineum lies inferior to the pelvic outlet and is separated from the main pelvic cavity by the pelvic diaphragm. In other words the pelvis is divided into main pelvic cavity above and perineum below by the pelvic diaphragm.

Histology of Bone Tissue

Microscopic examination of bone shows two varieties:

1.  Primary, immature or woven bone

In addition to irregular array of collagen fibres, other characteristics of primary bone tissue are a lower mineral content and a higher proportion of osteocytes than that in secondary bone tissue. The newly formed bone during development or during healing process are woven bone.