Capsule

Each gland is encased in a thin layer of loose areolar connective tissue and a thick fibrous capsule. The capsule is attached by fibrous bands extending into the substance of the gland.

The fibrous capsule (white) surrounds the gland and is fixed to the gland by multiple fine strands of fibrous tissue that extend into the gland. (highlighted in red).Courtesy of: Ashley Davidoff, M.D.
This is an artist’s rendition of thin fibrous strands of the capsule penetrating the cortex.Courtesy of: Ashley Davidoff, M.D.