The A to Z of Anatomical Histological and Medical terms
A
B
L
C
labi- lip
labium: Lt. = lip (plural labia), adj.- labial.
D
labrum: Lt. = rim.
E
labyrinth: Gk. labyrinthos = maze, adj.- labyrinthine.
lacerum: Lt. lacer = mangled, hence, lacerated, tornforamen
F lacerum is often torn in head injuries.
lacri- tear (lak-ree)
G
lacrimal: adj. Lt. lacrima = a tear (drop).
H
lactation: Lt. lactans = suckling. Hence, the act of secreting milk.
Lacteal =lactiferous ducts, specialized lymphatic ducts in the small
I
intestine to absorb large fat molecules. When they do so they turn
J
pale or milky.
lacteal: adj. Lt. lac = milk, hence, resembling milk.
K
lactic: adj. Lt. lac = milk.
L
lactiferous: adj. Lt. lac = milk, and ferre = to carry.
Lacuna (lah-KOO-nah) a chamber w/n bone or cartilage matrix which
M houses a cell (an osteocyte or chondrocyte). pl. - lacunae.
lacuna: Lt. lacus = lake, hence, a small pond or gap, adj.lacunar.
N
lal- talking
O
lambda: Gk. letter representing a capital ‘L’ and written as an
inverted V. adj. lambdoid (L-shaped)
P
Lamella (lah-MEHL-a) concentric ring of hardened bone matrix found
Q
in compact bone. pl. lamellae
lamella: diminutive of Lt. lamina = plate; hence, a small plate.
R Lamina (lah-MIN-a) plate as in the lamina of the vertebra a plate of
S
bone connecting the vertical and transverse spines pl. laminae (lah-
MIN-ee) laminectomy = removal of the lamina to give access to the SC
T and its perforating nerves.
lamina: Lt. = plate, either a layer of NT, like the laminae of the
U
lateral geniculate body, or a CT membrane, like lamina cribrosa
V
sclerae, or of bone, as in vertebral laminae;laminectomy = lamina
+ Gk. ektome = excision - excision of the vertebral laminae,
W
adj.- aminar.
X
lanugo: Lt. lana = wool, the fine downy hair on the skin of the
foetus, or cheeks or malnutrition.
Y lapar- abdominal cavity
lapis- stone
Z
109 © A. L. Neill
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