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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

thing go
a separate and self-contained entity

part, piece go
a portion of a natural object

body part go
any part of an organism such as an organ or extremity

tissue go
part of an organism consisting of an aggregate of cells having a similar structure and function

animal tissue go
the tissue in the bodies of animals

muscle, muscular tissue go
animal tissue consisting predominantly of contractile cells

cardiac muscle, heart muscle
the muscle tissue of the heart

noun.body

7 Subcategories

pacemaker, cardiac pacemaker, sinoatrial node, SA node go
a specialized bit of heart tissue that controls the heartbeat
papillary muscle go
any of several muscles associated with the atrioventricular valves
atrioventricular bundle, bundle of His, atrioventricular trunk, truncus atrioventricularis go
a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract
atrioventricular node go
a node of specialized heart muscle located in the septal wall of the right atrium
myocardium go
the middle muscular layer of the heart wall
Purkinje fiber go
a specialized cardiac muscle fiber that is part of the Purkinje network
Purkinje network, Purkinje's tissue, Purkinje's system go
a network of Purkinje fibers that carry the cardiac impulse from the atrioventricular node to the ventricles of the heart and causes them to contract