| slovo | definícia |
medullary ray
(encz) | medullary ray, n: |
medullary ray
(wn) | medullary ray
n 1: a sheet of vascular tissue separating the vascular bundles
[syn: vascular ray, medullary ray] |
| | podobné slovo | definícia |
Medullary rays
(gcide) | Medullary \Med"ul*la*ry\, a. [L. medullaris, fr. medulla marrow:
cf. F. m['e]dullaire.]
1. (Anat.)
(a) Pertaining to, consisting of, or resembling, marrow or
medulla.
(b) Pertaining to the medula oblongata.
[1913 Webster]
2. (Bot.) Filled with spongy pith; pithy.
[1913 Webster]
Medullary groove (Anat.), a groove, in the epiblast of the
vertebrate blastoderm, the edges of which unite, making a
tube (the medullary canal) from which the brain and spinal
cord are developed.
Medullary rays (Bot.), the rays of cellular tissue seen in
a transverse section of exogenous wood, which pass from
the pith to the bark.
Medullary sheath (Anat.), the layer of white semifluid
substance (myelin), between the primitive sheath and axis
cylinder of a medullated nerve fiber.
[1913 Webster] |
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