The A to Z of Anatomical Histological and Medical terms
A anhidrosis: (anhydrosis, anidrosis) Gk. an = negative, and hidros
B
= sweat; absence of sweating, typical of skin deprived of its
sympathetic innervation.
C ankle: the region between the leg and the foot.
ankyle- bent, crooked
D
Annulus (AN-yoo-lus) the outer fibrous ring of the intervertebral disc
E
annulus: diminutive of Lt. anus = ring, hence little ring.(AS anulus)
anomalo- uneven, irregular
F
antagonist: Gk. anti = against, and agonistes = rival, hence a
G
muscle which may oppose an agonist. adj.- agonist.
ante- before
H
anteflexion: Lt. ante = before, and flexere = to bend, anterior
I
angulation between the body and cervix of the uterus.
anterior: comparative of Lt. ante = before, in front.
J Anterior (ahn-TER-ee-or) toward the belly or front of the body. (in
humans, see also ventral) ≠ posterior
K
Anterior horn a region of the SC grey matter containing the cell
L
bodies of motor neurons. (see also the ventral horn).
Anterior root the structure emerging from the SC on its anterior
M
aspect that contains axons of motor neurons. (see also the ventral root).
N
Anterior pituitary gland the portion of the pituitary gland at the base
of the brain composed of glandular epithelium. (see also
O
adenohypophysis)
P
antero- anterior, forward
anteversion: Lt. ante = before, and versum = turned, hence, the
Q anterior angulation b/n cervix uteri & the vagina.
anti- against, combating
R
antrum: Gk. antron - cave, hence a space in a bone or organ.
S
anulus: diminutive of Lt. anus = ring, hence little ring. (AS annulus)
Anus (AY-nus) the distal end and outlet of the rectum.
T
anus: Lt. = ring, adj.- anal.
U
Aorta (AY-OR-tah) the main trunk of the systemic circulatory circuit. It
originates from the L ventricle.
V
Aortic semilunar valve - one of 4 heart valves, it consists of 3 cusps
W
that are attached to the wall of the aorta near its origin from the L
ventricle.= aortic valve.
X ap- toward , near to
ap- away from derived from, separation
Y
Aperture (a-PET-tyuu-a) an opening or space b/n bones or w/n a
Z
bone.
71 © A. L. Neill
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