The A to Z of Anatomical Histological and Medical terms
A
Testis (TEHS-tihs) one of a pair of male gonads (sex glands) located
B
w/n the scrotum that produces sperm cells and testosterone. pl. -
testes.
C testis: Lt. testiculus = the male gonad. Lt. testis = a witness.
Under Roman law, no man could bear witness (testify) unless he
D
possessed both testes. pl. - testes.
E
Testosterone a steroidal hormone secreted by interstitial cells (cells
of Leydig) located w/n the testes. It promotes the development of male
F
secondary sex characteristics & the development of spermatozoa.
G
terti- third (ter-shi-)
tetralogy: Gk. tetra = four, & logos = discourse, combination of 4
H
elements eg, symptoms or defects.
I
thalamus: Gk. = bedroom - the posterior end of the thalamus is
rounded and named pulvinar = cushion.
J theca: Gk. theka = a capsule, sheath.
thenar: Gk. = palm of hand; hence, the ball of the thumb.
K
Thoracic cavity (tho-RAHS-ihk CAHV-ih-tee) the part of the anterior
L
(ventral) body cavity located superior to the diaphragm, which contains
the heart, lungs, & mediastinum.
M
thorax: Gk. = the chest, adj.thoracic.
N
Threshold stimulus (THRESH-hold STIH-myoo-luhs) a change in
environment
O
thrombus: Gk. = a clot.
P
Thrombocyte (THROHM-bo-sit) the formed elements in blood that
play a prominent role in blood clotting. (also = platelets).
Q Thrombus (THROHM-buhs) a blood clot that has formed in a vein or
artery.
R
thymus: Gk. = sweetbread.
S
thym- thymus, mind
Thymus (THI-muhs) gland a glandular lymphatic organ located
T
superior to the heart that produces T lymphocytes during early
U
childhood, and degenerates by adulthood.
thyroid: Gk. thyreos = shield, and eidos = shape or form; shaped
V
like a shield (shields the glottis).
W
Thyroid cartilage (THI-royd CAHR-tih-lihj) the largest piece of hyaline
cartilage of the larynx. (also = the Adam’s apple).
X Thyroid gland (THI-royd) an endocrine gland located on the anterior
side of the neck that secretes hormones involved in growth,
Y
metabolism, and maintaining calcium levels in the blood.
Z
tibia: Lt. = the shin-bone, adj.tibial.
149 © A. L. Neill
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