The A to Z of Anatomical Histological and Medical terms
A
dis-apart from, two, twice, double , reversal, separation,
B
difficult, wrong
discus: Lt. = disc.
C Dissection (DYE-sek-shon) to cut up to carve in a systematic way
D
dissection: Lt. disssecare = to cut up, from dis = apart, sectum =
cut (c.f. anatomy).
E
Distal (DIS-tahl) away from the middle of the body or the axis or core
of the body proximal
F
distal: adj. Lt. di = apart, and stans = standing, hence, standing
G
apart, implying farther from a given point.
Distal convoluted tubule a segment of the renal tubule (of the
H
kidney nephron) that extends from the loop of Henle to the collecting
I
duct. Its pathway is very twisted.
diverticulum: Lt. = by-road, hence a blind tubular process or sac.
J Dorsal (DOR-sal) a directional term indicating toward the back side,
or posterior.
K
dorsal: adj.Lt. dorsum = back.
L
Dorsal root the sensory branch of a spinal nerve which connects with
the SC.
M
dorsum: Lt. = back.
N
ductus: Lt. = duct.
Ductus deferens (DUK-tuhs DEF-er-ehnz) the tube that conducts
O
sperm from the epididymis in the testes to the ejaculatory duct. (also
P
= vas deferens, and seminal duct).
duo- two
Q Duodenum (dew-OH-den-uhm) the first segment of the small
intestine extending from the pyloric valve to the jejunum.
R
duodenum: Lt. duodenarius = twelve, because it is 12
S
fingerbreadths long.
dura: adj.Lt. = hard (cf. durable); dura mater, the tough covering
T
membrane of the CNS.
U
dy- two
dynam- power energy (dye-nam)
V
Dynamic equilibrium the sensation of rapid movements, mostly of
W
the head.
dysphagia: Gk. dys = difficult, and phagein = to eat, hence,
X difficulty in swallowing.
dys- difficult painful abnormal
Y
Z
87 © A. L. Neill
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