circulatory Flashcards
The circulatory system consists of four major components:
heart
arteries
veins
blood
Circulatory system is also called as the
cardiovascular system
It is responsible for
distributing nutrients to cells and tissues throughout the body
transporting waste products from the tissues to the organs of elimination
_____ is a muscular pump that forces blood through a system of vessels made of _____, ______, and _______.
heart
arteries
veins
capillaries
Hollow, 4 chambered muscular organ located in the middle area of the chest between the lungs known as ______
mediastinum
It is enclosed in a loose fitting serous membrane known as the _________ or ________.
pericardial sac or pericardium.
PERICARDIUM LAYERS
fibrous pericardium
serous pericardium
prevents overdistention of the pumping heart by acting as a tough protective membrane surrounding the heart
fibrous pericardium
thin and delicate; it is continuous with the outermost layer of the wall of the heart, epicardium.
serous pericardium
Layers of the heart wall
epicardium
myocardium
endocardium
Endocardium is innermost layer of the heart; it covers the valves of the heart and the ________ of the valves
chordae tendineae
CHAMBERS OF THE HEART
atrium/atria
ventricles
primer pumps; reservoir of blood
atrium/atria
power pumps
ventricles
pumps blood to lungs
right ventricle