The A to Z of Anatomical Histological and Medical terms
A
B
N
C
Nail a thin, hard plate of mostly keratin, derived from the epidermis
and develops at the distal end of the fingers and toes.
D
narc- stupor
E
nares: plural, Lt. naris = nostril.
nas- nose (nays-)
F naris- nose (na-ris-)
naris: Lt. = nostril, plural - nares.
G
nasal: adj. Lt. nasus = nose; hence, pertaining to the nose.
H
natal: adj. Lt. natus = born; hence, pertaining of birth.
navicular: Lt. navicula = a little ship; the tarsal bone is concave
I
posteriorly, resembling a boat.
J
necro- death
Necrosis (neh-KRO-sihs) death of a cell, a group of cells, or a tissue
K
due to disease.
L
neo-: Gk. prefix - neos = new.
neonatal: adj.Gk. neos = new, and Lt. natos = born; hence, new-
M born.
N
neopallium: Gk. neos = new, and Lt. pallium = cloak; hence, the
cerebral cortex which developed more recently than the
O
archipallium or olfactory cortex.
nephro- renal kidney
P
Nephron (NEH-frohn) the smallest functioning unit of the kidney each
Q
of which filters, reasborbs and secretes the non-protein fluid of the
blood.
R Nerve an organ of the NS composed of a bundle of neurons, axons
S
and dendrites invested & surrounded by CT and BVs, which functions
in the conduction of an impulse from one area of the body to another.
T nerve: Lt. nervus = tendon; now a peripheral fibre bundle which
conducts impulses to/from the CNS
U
Nerve bundle also known as a nerve fasciculus, it is a cord of
V
individual myelinated axons surrounded by perineurium. Numerous
bundles compose a single nerve.
W
Nerve impulse a wave of negative charges (depolarization) that
X
propagates along the outer surface of the plasma membrane of a
conductive cell, such as a neuron. (also = an action potential).
Y
Z
119 © A. L. Neill
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