medulla
The medulla is the innermost part of an organ or body structure. The adrenal medulla is the central region of an adrenal gland, and the medulla of bone is the bone marrow. The term is also sometimes used to refer to the medulla oblongata.
The medulla is the innermost part of an organ or body structure. The adrenal medulla is the central region of an adrenal gland, and the medulla of bone is the bone marrow. The term is also sometimes used to refer to the medulla oblongata.