Med Term Ch 10 Flashcards
(294 cards)
right atrium
receives blood returning from the body through the veins
right ventricle
pumps blood into the lungs
left atrium
receives blood from the lungs
left ventricle
pumps blood from heart through the arteries to body tissues
atrioventricular valves
tricuspid and mitral valves which keep blood flowing in one direction
semilunar valves
pulmonary and aortic valves
pericardium
2-layer sac surrounding the heart, consisting of an external fibrous and internal serous layer
epicardium
outer lining covering the heart
myocardium
middle, thick, muscular layer of the heart
endocardium
inner lining of the heart
blood vessels
tubelike structures that carry blood throughout the body
arteries
blood vessels that carry blood away from the heart
pulmonary artery
carry carbon dioxide and other waste products from the heart to the lungs
arterioles
smallest arteries
aorta
largest artery in the body which originates at the left ventricle, briefly ascends as the arch, then descends through thorax and abdomen
veins
blood vessels that carry blood back to the heart
pulmonary veins
carry oxygenated blood from the lungs to the heart
venules
smallest veins
venae cavae
largest veins in the body
inferior vena cava
carries blood to the heart from body parts below the diaphragm
superior vena cava
returns the blood to the heart from the upper part of the body
capillaries
microscopic blood vessels that connect arterioles with venules
blood
fluid circulated through the heart, arteries, capillaries, and veins
plasma
clear, straw-colored, liquid portion of blood in which cells are suspended, plasma is approximately 90% water, 10% composed of solutes which include proteins, electrolytes, and vitamins