Circulatory System Crossword

the upper chambers of the heart that receive blood returning to the heart through veins
the lower chambers of the heart that pump blood out of the heart through arteries
system in which blood travels to the lungs and then back to the heart
system in which blood travels to the body and then back to the heart
seperates the left and right sides of the heart
flaps of the valves
distal end of the heart
the middle layer of the heart, mostly cardiac muscle
thin inner lining of the heart, within the chambers
the space between the lungs, spine, and sternum (where the heart is located)
_______ pericardium encloses the heart
the contraction of a heart chamber
the relaxation of a heart chamber
carry blood away from the heart
carry blood to the heart
_________ arteries supply blood for the heart itself
penetrate nearly all tissues, walls are composed of a single layer of squamous cells - very thin
________ stenosis is the narrowing of blood vessels
the expanding of blood vessels
instrument used to measure heart sounds