'SA node' definitions:
Definition of '
SA node
'
From:
WordNet
noun
A specialized bit of heart tissue that controls the heartbeat [syn:
pacemaker
,
cardiac pacemaker
,
sinoatrial node
, SA node]
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z