hs147_ch12


What is the main function of the circulatory system?


transport oxygen and nutrients to the tissues which are needed for metabolismtransport waste products from cellular metabolism to kidneys and other excretory organs for eliminationcirculates electrolytes and hormones needed for regulation of various bodily functions


What are the two parts of the circulatory system?


systemicpulmonary


What returns deoxygenated blood to the heart?


veins


What contains valves which prevent backflow of blood when heart relaxes?


veins


Do arteries or veins have larger lumens?


veins


What is the largest vein which returns blood into the right atrium of the heart?


vena cava


What do the lower extremity venous system consists of?


superficial veinsdeep channels


What carries oxygenated blood from the heart to the tissues?


arteries


Which has thicker and stronger walls, needed to handle higher blood velocity flowing from the heart?
a) arteries
b) veins


a) arteries


What is the largest artery which originates at the left ventricle of the heart?


aorta