The A to Z of Anatomical, Histological and Medical Terms

The A to Z of Anatomical Histological and Medical terms
A
B
Q
C
quad- four
quadrangular: Lt. quadri = four and angulus = angle; hence
D
square or rectangular.
E
quadratus: Lt. = square or rectangular.
quadriceps: Lt. quadri = four, and caput = head; hence, a 4-
F headed muscle.
quadrigeminus: Lt. quadri = four, and gemini = paired or twinned;
G
hence four-fold.
H
I
R
J rachi- spine vertebral column
radi- root, spine, radiation
K
radiation: Lt. radiatus = radiant; hence, divergence from a
L
common centre (c.f. radius).
radicle: diminutive of Lt. radix = root; hence a small root, adj.-
M
radicular.
N
radius: Lt. = spoke of a wheel, which rotates around the hub;
hence, the lateral bone of the forearm, which rotates (though
O
around an almost vertical axis); adj.- radial.
P
radix: Lt. = root.
ramify: Lt. ramus = a branch; and facere = to make; hence, to
Q
branch.
R
rami- branch (ray-mee)
ramus: Lt. = branch; hence, a branch of a nerve, bone or blood
S
vessel.
raphe: Gk. a seam; hence, the line of junction of the edges of 2
T
muscles or areas of skin.
U
re- return, back again
Receptor (ree-SEHP-tor) a structure that is capable of responding to
V
a stimulus by initiating a nerve impulse.
W
recess: Lt. recessus = a secluded area or pocket;a small cavity
set apart from a main cavity.
X rectum: adj.Lt. rectus = straight. (The rectum was named in
animals where it is straight - not so in Man).
Y
rectus: Lt. rectus = straight.
Z
recurrent: Lt. re = back, and currere = to run; hence a structure
which bends, then runs back to its source.
135 © A. L. Neill
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