The A to Z of Anatomical Histological and Medical terms
alveolus: Lt. a basin, hence any small hollow. pl. - alveoli, adj.- A
alveolar, after holes in a tissue eg the lung – alveolar bone in
B
the maxilla.
Alveolar duct (awl-VEE-o-lar) a branch of a respiratory bronchiole w/n C
the lungs leading to alveoli & alveolar sacs.
Alveolar sac two or more alveoli which share a common opening
D
from an alveolar duct.
E
Alveolus (awl-VEE-o-lus); a microscopic air sac within the lungs. pl -
alveoli
F
ambi- both, about, around
G
ambiguus: adj.Lt. = doubtful (nucleus ambiguus).
ampulla: Lt. = a two-handed flask, a local dilatation of a tube.
H
amygdaloid: adj.Gk. amygdala = almond, and eidos = shape or
form, amygdaloid is almond-shaped.
I
amylacea: Gk. amylon = starch, hence, starchy. J
an- without, lack of, not
an- up, back, again
K
anaesthesia: Gk. an = negative, and aisthesis = sensation, loss of
L
sensation;
Anal canal (A-nawl) the terminal 2 or 3 cm of the rectum. It opens to
M
the exterior at the anus.
N
analgesia: Gk. an = negative, and algesis = pain, insensibility to
pain; adj.- analgesic.
O
analogous: Gk. ana = up, apart, towards, and logos = word. A
part with similar function through different morphology e.g.,
P
fish gills and mammalian lungs (c.f. homologous). Q
anastomosis: Gk. ana = of each, and stoma = mouth, hence the
end-to-end continuity of 2 vessels.
R
Anatomical position the reference position, in which the subject is
S
standing erect with the feet facing forward, arms are at the sides, &
the palms of the hands are facing forward (the thumbs are to the
T
outside).
U
Anatomy (ah-NAH-to-mee) the study of the structure of the body.
anatomy: Gk. ana = up, and tome = a cutting, hence cutting up
V
of a body (c.f. dissection).
anconeus: Gk. ancon = elbow, hence the muscle attached to the
W
(lateral surface of the) olecranon. X
aneurysm: Gk. angeion = blood vessel (BV), and eurys = wide, a
pathological dilatation of a BV.
Y
angiography: Gk. angeion & graphe = a record; picture of a BV
Z
injected with radiopaque material.
© A. L. Neill 70
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