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Cardio. Sys.

Flashcards

QuestionAnswer
where is the heart located? thoracic cavity
how does aspirin prevent heart attacks? reduces stickiness of platelets, therefore prevents clots
name three layers of of the heart walls starting from outside: epicardium, myocardium, endocardium
do the left and right atrium receive blood? yes
what are the major vessels in the heart? aorta, pulminary arteries, vena cava, and pulminary veins
two types of heart surgery? Balloon Angioplasty, Coronary Bypass Operation
systole? contraction
diastole? relaxation
SA (SINOATRIAL) NODE? -initiates heartbeat every .85 sec. -pacemaker
LUP? closing of bicuspid and tricuspid valve
DUP? closing of aortic and pulminary valve
fibrillation? lack of blood flow to heart
blood vessels? tubes that transport blood
arteries? carry oxygen rich blood away from heart to body
the __________ is the largest artery in the body aorta
capillaries? microscopic blood vessels that connect arteries together, exchange of oxygen, carbon dioxide nutrients and waste occur
veins? oxygen poor, to heart from body.
Arteriosclerosis? hardening of ateries due to formation of scar tissue, leads to hypertension, heart attacks and strokes
Varicose veins? weak veins, dilation of superficial veins
phlebitis? inflammation of veins, lead to thromboembolism and death
what is circulation? movement of blood through blood vessels
what do veins use to help move blood? use the actions
what is the pulse? stretching and recoiling of arterial wall as blood surges through
what is blood measured on? pressure in large arteries
hypertension? HIGH BLOOD PRESSURE
hypo tension? low systolic, associated with illness. LOW BLOOD PRESSURE
is blood the only fluid tissue in the human body? true
makes up _______% of blood blood plasma
erythrocytes? RED BLOOD CELLS
hemoglobin is an ______ containing protein IRON
leukocytes? WHITE BLOOD CELLS
white blood cells are crucial to the body because? they defend against disease
where do platelets derive from? ruptured multinuclear cells
why are white blood cells complete cells? contain nucleus and organelles
heart valves held in place by? chordae tendinae
valves move blood in two or one direction? one
what are 3 components of cardio. sus? heart, blood vessels, blood
right atrium->________________->right ventricle? tricuspid valve
pulm. valve->_________________->lungs? pulm. artery
pulm. veins->________________->bicuspid valve? left atrium
Created by: anec94
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