The chromaffin masses

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• endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

• body — 1. The head, neck, trunk, and extremities. The human b., consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the …   Medical dictionary

• Medulla — The innermost part. The spinal medulla, for example, is that part of the spinal cord that is lodged within the vertebral canal. * * * Any soft marrow like structure, especially in the center of a part. SEE ALSO: m. oblongata. SYN: substantia… …   Medical dictionary

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• paraganglion — A small, roundish body containing chromaffin cells; a number of such bodies may be found retroperitoneally near the aorta and in organs such as the kidney, liver, heart, and gonads. SYN: chromaffin body. * * * para·gan·gli·on gaŋ glē ən n …   Medical dictionary

• Paraganglioma — Classification and external resources Micrograph of a carotid body tumor (a type of paraganglioma). ICD 10 C …   Wikipedia

• tumor — 1. Any swelling or tumefaction. 2. SYN: neoplasm. 3. One of the four signs of inflammation (t., calor, dolor, rubor) enunciated by Celsus. [L. t., a swelling] acinar cell t. a …   Medical dictionary

• ectoderm — ectodermal, ectodermic, adj. ectodermoidal /ek toh deuhr moyd l/, adj. /ek teuh derrm /, n. Embryol. the outer germ layer in the embryo of a metazoan. Also called ectoblast. [1860 65; ECTO + DERM] * * * ▪ anatomy       the outermost of the three… …   Universalium

• paraganglion — n. one of the small oval masses of cells found in the walls of the ganglia of the sympathetic nervous system, near the spinal cord. They are chromaffin cells, like those of the adrenal gland, and may secrete adrenaline …   The new mediacal dictionary

• arterial gland — noun : any of certain small masses of vascular and chromaffin tissue found in several parts of the body (as the carotid and coccygeal glands) …   Useful english dictionary