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cardio system

cardiovascular system

TermDefinition
when is blood blue? NEVER. vein walls are blue. blood is dark red when deoxygenated and bright red when oxygenated
components of the cardiovascular system blood, arteries, heart, capillaries, veins
systolic top number of BP fraction. amount of pressure experienced by the arteries while the heart is beating
diastolic bottom of BP fraction, amount of pressure experienced by the arteries while the heart is refilling between beats
a1. inferior vena cava drains deoxygenated blood from abdomen and lower limbs goes into right atrium looks like a sideways T
a2. superior vena cava drains deoxygenated blood from the head and arms goes into right atrium looks like a sideways T
b. right atrium where deoxygenated blood enters from the body top part of 'left' side (right from patient perspective)
c. right ventricle responsible for pulmonary circulation (sending deoxy blood to the lungs) located lower half of left side (right from patient perspective)
d. pulmonary artery deoxygenated blood to lungs stem coming off of left side of heart toward lungs (right from patient perspective)
e. pulmonary vein brings oxygenated blood from the lungs back to the left side of heart enter to left atrium
f. left atrium blood passes through from lungs on its way to left ventricle top part of right side of heart (left from patient perspective)
g. left ventricle circulation of oxygenated blood to the body lower part of left side of heart
h. aorta sends oxygenated blood to the body curls over the top of right side of heart (left from patient perspective)
septum divides left and right ventricles
pulmonary valve prevents backflow of deoxygenated blood from pulmonary artery back to right ventricle
tricuspid valve prevents backflow to right atrium from right ventricle located just below right atrium
bicuspid/mitral valve prevents backflow to left atrium from left ventricle located just below left atrium
aortic valve prevents backflow to left ventricle from aorta located at lower entrance of aorta
function of blood carries gases, nutrients, and waste to and from cells
other name for red blood cells erythrocytes
other name for white blood cells leukocytes
function of platelets clot your blood
function and structure of arteries carry blood away from the heart big and muscular, thick muscle wall, round, deep in body, get smaller the further from heart
arterioles mini/smallest arteries join with capillaries
function and structure of veins take blood back to the heart thinner walls than arteries, irregular shape, closer to surface of body
venules mini/smallest veins join with capillaries
function of red blood cells transport oxygen/carbon dioxide, regulation of blood flow and blood pressure
structure of red blood cells round disk with dip in middle on both sides no nucleus (more room for oxygen transport) plasma membrane is strong/flexible so they can squeeze through capillaries
capillaries smallest type of blood vessel connect venules and arterioles (exchange vessels) capillary beds spread out in organs with lots of exchange/diffusion (lungs, kidneys, intestines, etc.)
function of white blood cells repair tissue destruction and immune response to pathogens
platelets/thrombocytes NOT CELLS, THEY ARE CELL FRAGMENTS help stop blood loss by clotting
hypertension accepted: 120/80 or lower cause: obesity, smoking, old age signs/symptoms: headaches, difficulty breathing, dizziness, vomiting, abnormal heartbeat treat: change in lifestyle, diuretics (heart pump slower & less force) lead to plaque buildup/blockages
aneurism when part of an artery wall weakens, allowing it to abnormally balloon out or widen. HBP can cause it to burst and kill you
path of blood through heart vena cava - right atrium - tricuspid valve - right ventricle - pulmonary valve - pulmonary artery - lungs - pulmonary vein - left atrium - bicuspid/mitral valve - left ventricle - aortic valve - aorta - body
Created by: ewhite233
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