The A to Z of Anatomical Histological and Medical terms
A
Pleural cavity a narrow space between the visceral and parietal
B
pleurae that contains pleural fluid.
Plexus (PLEHKS-uhs) a network of interconnecting nerves, veins, or
C lymphatic vessels.
plexus: Lt. = a network or plait.
D
plica: Lt. plicare = to fold; hence, a fold.
E
pluri- several
pne- air, breathe (new)
F
pneumon: Gk. pneuma = air.
G
pod- foot
Podocyte (PO-doh-site) a fenestrated cell forming the visceral layer of
H
Bowman’s capsule in the kidneys.
I
poikilo- irregular
polio- grey (poh-lih-oh)
J pollex- thumb
pollex: Lt. = thumb.
K
pollicis: genitive (possessive case) of Lt. pollex = thumb; hence of
L
the thumb.
poly- many
M
Pons (pohnz) a part of the brain located between the midbrain and the
N
medulla oblongata.
pons: Lt. = bridge; adj.- pontine; part of the brain stem.
O
pont- bridge
P
popliteus: Lt. poples = the ham or thigh, and sometimes, the
knee; adj.popliteal, referring to the fossa behind the knee or its
Q contents.
por- passageway
R
porta: Lt. = a gate, also Lt. portare = to carry; hence, the portal
S
system carries venous blood from the alimentary tract to the porta
hepatis; adj.- portal.
T
porus: Lt. a pore or foramen; hence, the openings of the acoustic
U
meatuses.
post- after behind
V
postero- posterior part
W
Posterior (po-STEER-ee-or) a directional term describing the location
of a part being toward the back or rear side relative to another part.
X In humans it is also known as dorsal.
posterior: adj. Lt. post = behind (in place or time).
Y
Posterior horn a region of the SC grey matter containing sensory
Z
neuron cell bodies.(also = the ventral horn).
131 © A. L. Neill
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