The A to Z of Anatomical Histological and Medical terms
A
melan- black
B
Melanin (MEHL-ah-nihn) a dark pigment released into some parts of
the body like the skin.
C Melanocyte (MEHL-ahn-o-site’) a cell normally located deep to the
epidermis in the skin that secretes melanin.
D
Melanoma (mehl-an-OH-mah) a highly metastatic malignancy arising
E
from melanocytes in the skin. (also = malignant melanoma).
Melatonin (mehl’-ah-TO-nihn) a H secreted by the pineal gland. It
F
may play a role in circadian rhythms.
G
Membrane (MEHM-bran) a thin sheet of tissue that lines or covers
body structures. It may contain a thin layer of epithelial tissue and CT,
H
or only CT.
I
membrane: Lt. membrana = a thin sheet; adj.- membranous.
Membranous bone a type of embryonic osseous tissue representing
J early skeletal development in a late embryo.
men- menses
K
meninges: pl. of Gk. meninx = a membrane; adj.- meningeal.
L
meniscus: Lt. menis - a small crescent.
M
ment- mind, chin
mental: adj.- Lt. mentum = chin; or Lt. mens = mind.
N
mer- part, segment
mes- middle
O
mesencephalon: Gk. mesos = middle, and enkephalos = brain;
P
adj.- mesencephalic.
mesenchyme: Gk. mesos = middle, & chymos = juice; the
Q embryonic CT of the mesoderm.
mesentery: Gk. mesos = middle, and enteron = intestine; the
R
peritoneal fold which tethers the centrally placed small intestine;
S
adj. - mesenteric.
Mesoderm (MEEZ-oh-derm) the middle of the three primary germ
T
layers in a developing embryo that forms the muscles, the heart and
U
BVs, & the CT.
mesoderm: Gk. mesos = middle, and derma = skin; the middle
V
germ layer of the embryo.
W
Mesothelium (mehz’-oh-THEE-lee-uhm) a simple squamous
epithelium lining parts of the body’s ventral cavity.
X mesosalpinx: Gk. mesos = middle, and salpinx = tube; the
intermediate part of the broad ligament.
Y
meta- subsequent, transformation, between, changing after
Z
metacarpus: Gk. meta = after, and karpus = wrist; adj.-
metacarpal.
115 © A. L. Neill
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