The A to Z of Anatomical Histological and Medical terms
H
A
B
habenula: diminutive of Lt. habena = rein.
C
Haeme = blood (AS Heme)
Haematocrit (hee-MAT-o-krit) the percentage of RBCs in a sample of
D
blood, which is determined by centrifuging the sample and measuring
the RBC volume relative to other blood components.
E
Haematopoiesis (heem’-ah-to-poy-EE-sihs) The production of blood F
cells in the red bone marrow. (= haemopoiesis. AS hematopoiesis)
Haemoglobin (HEE-mo-glo-bihn) a complex protein in RBCs involved
G
in the transport of oxygen & carbon dioxide. (AS hemoglobin)
H
Haemolysis (hee-MOL-ih-sihs) the bursting of a RBC resulting from
disruption of the plasma membrane by toxins, freezing or thawing, or
I
exposure to a hypotonic solution. (AS hemolysis)
J
Haemostasis (hee’-mo-STA-sihs) the stoppage of bleeding.
haemorrhoid: Gk. haema = blood, and rheo = to flow, hence likely
K
to bleed, hence haemorrhoids are the extrusion of gut BVs
through the anus. These have little or no muscle and so bleeding
L
can be profuse. M
Hair a threadlike outgrowth of the skin that is composed of columns
of keratinized cells.
N
Hair follicle a cluster of epithelial tissue surrounding the root of a
O
hair where the hair originates.
hallux- big toe (hal-uhcs)
P
hallux: Lt. hallex = great toe (hallucis = of the great toe).
Q
hamate: adj. Lt. hamus = a hook, hence, hooked.
hamstrings: the tendons of the muscles of the ham - ie. of the R
back of the thigh - felt behind the knee when the leg is flexed
against resistance (semimembranosus, semitendinosus and
S
biceps femoris). T
hamulus: diminutive of Lt. hamus = hook.
hapl- single
U
haustra: Lt. = saccules.
V
Haversian system (see osteon) smallest functioning unit of bone.
Heart the hollow muscular organ within the thoracic cavity that
W
propels blood through the circulatory network.
X
hecl- ulcer (hels)
helicine: Gk. helix = a coil, spiral. Y
helix: Gk. = coil.
hemi- half (hem-ee)
Z
© A. L. Neill 100
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