Circulatory System
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20 Terms
What does the septum do?
Prevents blood from mixing (deoxygenated blood and oxygenated blood) and separates right from left side of heart
Where is the tricuspid valve
Right ventricle
What node is in the right atrium?
The SA node - sinoatrial node.
What does the SA node do? Where is it found?
Found in the wall of the right atrium. Deoxygenated blood passes over it and beats. Acts as the pace maker.
What is the name of the other node in the walls of the right atrum close to the septum?
AV node - atrioventricular node
Where is deoxygenated blood deposited in the right atrium
Coronary sinus
What does the aorta do?
pump oxygen rich blood to the rest of the body
What makes blood not mix with the brain
blood-brain barrier
What is pulmonary ciculation
(deoxygenated blood from right side ) Leaves the heart and goes into lungs to get oxygen (
What is systemic circulation
(oxygenated blood from left side ) to rest of body to deliver oxygen
Pulmonary Circuit Route
Deoxygenated blood from openings - inferior vena cava, superior vena cava and coronary sinus - goes into right atrium, then Tricuspid Valve, Right Ventricle, Pulmonary Semilunar Valve, Pulmonary Trunk, then left and right pulmonary arteries and lungs
Systemic Circuit Route
Pulmonary Arteries
Lungs
Pulmonary Veins
Left Atrium
Bicuspid Valve
Left Ventricle
Aortic Semilunar Valve
Aorta
What is a normal systole in US
110/70
What is the systole
The highest pressure that the ventricle is going to receive as result of contraction blood leaves
What is diastole
The lowest pressure that the ventricle is going to receive as a result of blood entering
Heart Murmur meaning
blood continuously flows (damage to semilunar valves damaged)
Arteries vs veins location
Arteries - found deep in flesh, veins- found near skin surface
Arteries vs veins wall
Artery - thick, muscular elastic walls, Capillaries - thin, inelastic walls
What do artery and veins trasnport
Veins - deoxygenated blood (except pulmonary vein), artery - oxygenated blood (except pulmonary artery)
What do capillaries do?
connect arterioles to venules and allow gas exchange