Definitions for "Medulla"
Marrow; pith; hence, essence.
The marrow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.
A soft tissue, occupying the center of the stem or branch of a plant; pith.
the center part of an organ or body structure; sometimes used to refer to the lower part of the brain stem
Part of the hindbrain and the rearmost portion of the brain, just adjacent to the spinal cord. It is involved in the control of respiration, circulation, balance, and protective reflexes such as coughing and sneezing.
The cone of nerve tissue anterior to the cerebellum and connecting the pons with the cervical spinal cord. It contains nerves responsible for respiration, circulation and special senses. image
Most internal part of a structure or organ.
A central zone of cells present only in large, thick hairs. elanin: Pigmenting granules within the keratin fibers of the hair shaft that determine hair color. They usually decrease with age, resulting in gray or white hair.
The central portion of hair, the core area.
Keywords:  axis, fiber, cylinder, fatty, sheath
a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
The hollow, rounded cells which are found along the center of the main axis of a fiber. They may run continuously along the length of the fiber.
Keywords:  center, structure
Center of a structure