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Blood for test

Terms in this set (49)

blood vessels
carry blood to and through the tissues and organs, deliver oxygen and nutrients; carry away waste; part of maintaining blood pressure
capillaries, arteries, veins
examples of blood vessels:
coronary artery
the vessels that supply the heart muscle with oxygen rich blood
capillary
blood vessels that distribute oxygenated blood from the arteries to the tissue and feed deoxygenated blood from tissue back into veins
diffusion
process where molecules move from and area which they are highly concentrated to a place where they are less concentrated
venule
a small vein that collects blood from capillaries
arteriole
a small branch of an artery leading into capillaries
vasoconstriction
narrowing of the blood vessels resulting from contraction of the muscular wall
vasodilation
dilation of blood vessels which decreases blood pressure
tunics
one of the coats of a blood vessel or other tubular structure
tunica intima
innermost layer of blood vessel made up of endothelial cells, in direct blood flow
tunica media
middle layer composed of bundles of elastic tissue, smooth muscle fibers, and fibrous tissue
tunica externa
the outermost layer composed of collagen
lumen
inside tunnel space of a blood vessel
arteries, arterioles, capillaries, capillary beds, venules, veins, heart
passage of blood throughout body:
blood
(connective tissue), red liquid that circulates in the arteries and veins; carrying oxygen and carbon dioxide from the tissue and moves waste away from cells
plasma
the liquid part of blood; makes up most of the volume of blood, carries glucose and fats from digested food; part of blood that carries waste
red blood cells
the blood cells that carry oxygen
white blood cells
the blood cells that fight infections; part of immune/lymphatic system
platelet
cell fragment found in large numbers in blood to help clotting
coronary
What arteries pump blood to the heart?
circulatory system
What is the other term for the cardiovascular system?
veins, arteries, and heart
What makes up this system?
the size of 2 fists
How large is the average adult heart?
veins
thin tubes in your body which your blood flows through toward your heart
arteries
muscular walled tubes forming part of the circulatory system where blood from the flows elsewhere (don't always have oxygen rich blood)
atrium
the 2 upper cavities of the heart from which blood is passed to the ventricles
ventricle
a cavity of a bodily part or organ; a chamber of the heart which receives blood from the atrium
atrium pumps out blood and ventricle receives it
what is the difference between atria and ventricles?
valve
4 flaps of tissue within the heart that prevent back flow of blood by opening and closing every time the heart beats
pacemaker
part of heart muscle that stimulates the heart muscle and regulates its contraction
right ventricle
pumps deoxygenated blood up through the pulmonary valve and through the pulmonary artery to the lungs to be oxygenated
right atrium
the right upper chamber of the heart; receives deoxygenated blood and pumps it to the right ventricle
left atrium
receives oxygenated blood from lungs and sends it to left ventricle
left ventricle
responsible for pumping oxygenated blood to tissues all over the body
vena cava (inferior/superior)
a large vein carrying deoxygenated blood into the heart (right atrium)
aorta
main artery of body, supplies oxygenated blood to the circulatory system
tricuspid, mitral, aortic, pulmonic
4 valves of the heart:
tricuspid valve
blood flow from right atrium to right ventricle
mitral valve
blood flow from left atrium to left ventricle
aortic valve
controls blood flow out of left ventricle
pulmonic valve
controls blood flow out of right ventricle
sinoatrial node
where the signals for the heart start (in the right atrium)
atrioventricular node
signals ventricles to contract
superior/inferior vena cava, right atrium, right ventricle, pulmonary artery, lungs, pulmonary veins, left atrium, left ventricle, aorta
passage of blood:
ventricular tachycardia
a fast heart rhythm over 100 beats per minute, the rapid heartbeat doesn't give ventricles enough time to fill with blood before heart contracts
ventricular fibrillation
serious cardiac rhythm disturbance where the lower chambers quiver and heart can't pump blood causing cardiac arrest
asystole
cardiac arrest where heart stops beating and there is no electrical activity (flat line)
systole
the phase of heartbeat when the heart contracts and pumps blood from chambers into arteries
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