The A to Z of Anatomical Histological and Medical terms
supine: adj.Lt. supinus, recumbent on the back, also, the hand
A
position of the dorsum posteriorly.
supra- above over
B
supra: Lt. prefix = superior to. C
suprarenal: Lt. supra = above, over, superior to, and ren = the
kidney.
D
sural: adj.Lt. sura = the calf.
E
sustentaculum: Lt. = a support, which sustains; e.g.
sustentaculum tali - the ledge on the calcaneus supporting part of
F
the talus.
G
Suture (SEW-tjah) the saw-like edge of a cranial bone that serves as
a joint b/n bones of the skull ; the stitching of 2 opposing edges of
H
tissue.
suture: Lt. sutura = a seam; the fibrous joints b/n cranial bones.
I
Sweat gland an exocrine gland located in the skin that secretes J
sweat. (also = sudoriferous gland).
sym- together union association
K
sympathetic: Gk. syn = with, and pathos = feeling; hence, the
L
peripheral part of the ANS arising from the thoracolumbar region
of the spinal cord and communicates with other nerves.
M
Sympathetic division (simp’-ah-THEH-tihk dih-VIH-zhuhn) a division
N
of the ANS that functions mainly in stimulating emergency responses
(fight or flight).
O
symphysis: Gk. syn = with, and physis = growth; a joint - bone +
fibrocartilage + bone generally used for joints in the median
P
plane, often fuse later in life (the symphysis of the mandible is Q
exceptional, the 2 halves fusing before 2 yo).
syn- together, union, association
R
Synapse (sihn-AHPS) the junction b/n the axon of one neuron & the
S
dendrite or cell body of another neuron.
synapse: Gk. syn = with, and aptein = to join; the zone an
T
impulse passes from one neuron to another.
U
Synaptic cleft (sihn-AHP-tihk clehft) a part of the synapse that
consists of the space b/n neurons or neuron and muscle fiber across
V
which the neurotransmitter must diffuse.
Synaptic end bulb the expanded distal end of a neuron’s axon
W
containing numerous synaptic vesicles & mitochondria. X
Synaptic terminals the terminal ends of axons where the synapse
begins b/n adjacent neurons.
Y
Synaptic vesicles microscopic sacs w/n synaptic end bulbs of axons
Z
that store neurotransmitter.
© A. L. Neill 146
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