medulla externa
see medulla.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • medulla — n. [L. medulla, marrow, pith] 1. Central portion of an organ. 2. (ARTHROPODA) Apical lobes of the brain; the central synaptic region; epiopticon; medulla externa; external medullary mass …   Dictionary of invertebrate zoology

  • Medulla of ovary — Diagram in French. Zone medullaire labeled at bottom left.) Latin medulla ovarii Gray s …   Wikipedia

  • stria externa zonae externae medullae renalis — [TA] outer stripe of outer zone of renal medulla: in the outer zone of the renal medulla, the part next to the cortex; it contains thick descending and thick ascending limbs of the loop of Henle …   Medical dictionary

  • zona externa medullae renalis — [TA] outer zone of renal medulla: the part of the renal medulla nearest to the cortex, containing part of the distal straight tubule and the medullary collecting tubule. It is subdivided into the inner stripe and the outer stripe …   Medical dictionary

  • outer stripe of outer zone of renal medulla — stria externa zonae externae medullae renalis …   Medical dictionary

  • outer zone of renal medulla — zona externa medullae renalis …   Medical dictionary

  • chiasma — n.; pl. mata [Gr. chiasma, cross] 1. (ARTHROPODA: Insecta) A crossing of nerves in the nerve center. a. External (outer): a crossover between the lamina ganglionaris and the medulla externa. b. Internal (inner): a crossover between medula externa …   Dictionary of invertebrate zoology

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  • Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… …   Medical dictionary

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