Anatomy and Physiology of Heart

The ______ or the visceral and outermost layer is actually a part of the heart wall

The ___ consists of thick bundles of cardiac muscle twisted and whirled into ringlike arrangements and it is the layer that actually contracts.myocardium

The endocardium is the ___ layer of the heart and is a thin, glistening sheet of endothelium hat lines the heart chambers.

List the cardiac conduction system

c

d

a

b

e

SA Node

Rt & Lt Bundle Branch

AV Node

AV Bundle

Purkinje Fibers

Blood enter the heart through two large veins. Name it​.​ (a)   ​ (b)  

• Superior Vena Cava
• Inferior Vena Cava
• Left Subclavian Artery
• Right Subclavian Artery

__ means heart contraction

The term ​ ​ (a)   refers to the events of one complete heartbeat, during which both atrium and ventricles ​ (b)   and then ​ (c)   ​

• cardiac cycle
• contract
• relax