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Chapter 18

The Cardiovascular System - Chambers, Circuits, Valves & Blood Flow Pathway

the heart is the __ system and the blood vessels are the ___ transport - delivery route
the heart is located in the ___ which is a subdivision of the ___ pericardium - mediostinum
what side is the pulmonary circuit on? right
the systemic circuit is located on the __ side left
which circuit pumps blood through the lungs? pulmonary
the systemic circuit pumps blood: through the body's tissues & organs
the pulmonary circuit __ oxygen and __ carbon dioxide picks up - releases
the systemic circuit __ oxygen & __ CO2 supplies - removes
epicardium outer layer
myocardium middle layer - *contracts*
endocardium inside layer
the ___ layer is composed of mainly cardiac muscle myocardium
this layer lines the heart chambers endocardium
what happens if there is too much fluid in the heart? heart can't move & contract to pump
if there isn't enough fluid in the heart, this causes: adhesion
which veins carry oxygenated blood? pulmonary
what does the superior vena cava do? drains head & thoracic region
the coronary sinus... collects all the blood
inferior vena cava drains neck & down
what prevents blood from coming back in atrium? chordae tendinae
what happens if you have oxygenated & deoxygnated blood flowing together? it can cause back flow - causing blood not to flow effiiciently
when heart cells die, they don't repair. true or false. true
angina pectoris severe chest pain --> caused by lack of oxygen to heart muscle
myocardial infaraction (heart attack)
what are the receiving chambers of the heart? atria
what are the 2 largest veins? superior & inferior vena cava
deoxygenated means: used, full of waste & CO2
what is the only artery that brings oxygneated blood to the heart? left pulmonary artery
this vein returns blood from body superior to diaphgram superior vena cava
the inferior vena cava returns blood from body ____ inferior to diaphgram
what are the 4 chambers of the heart? right atrium, right ventricle, left atrium & left ventricle
the right atrium receives __ blood deoxygenated
in the right atrium, blood enters via what 3 veins? the vana cavas & coronary sinus
in the right ventricle ___ blood flows from the ___ deoxygenated - right atrium
in the right ventricle, blood flows in from the __ and flows out through the __ right atrium - pulmonary trunk
the left atrium receives what kind of blood? oxygenated
oxygenated blood is new blood
blood enters the left atrium from the ___ and exits through the __ pulmonary veins - left ventricle
the most muscular chamber of the heart is the ___ left ventricle
__ blood flows in the left ventricle oxygenated
blood comes in the left ventricle via __ and leaves through the __ mitral valve - aortic valve
the right ventricle & atrium are apart of which circuit? pulmonary
the systemic circuit is on the __ side of the heart left
why is the heart considered a double pump? because each side supplies its own circuit
when blood is going from the right atrium to the right ventricle, it is passing the __ valve tricupsid
when blood is traveling from the right ventricle to the pulmonary trunk, its passing the __ valve pulmonary semilunar
blood goes from the left atrium to the left ventricle via the __ valve bicuspsid
when blood is leaving the left ventricle to the aorta, its passing through which valve? semilunar vavle
blood leaves the vena cavas & coronary sinus then travels to the __ then the right ventricle to the ___ then off to the ___, then the __ when it leaves there it goes to the: right atrium pulmonary trunk lungs heart 4 pulmonary veins
when blood leaves the pulmonary veins it goes to the ___ then ___ left atrium left ventricle
after blood leaves the left ventricle it goes to the ___ then the body then the __ and the process starts over aorta - heart
coronary cicrulation is: the functional blood supply of the heart
the shortest circulation in the body is__ coronary circulation
the left & right coronary arteries arise from the __ which : aorta - provides aortal supply of coronary circulation
venous blood is collected by the ___ and empties into the ___ cardiac veins - coronary sinus
what 2 large vessels receive blood from the left & right ventricles? aorta & pulmonary trunk
arteries go in which direction of the heart? away
veins go __ heart to the
the atrioventricular valves consist of which 2 valves? tricupsid & mitral
mitral valve between left atrium & left ventricle
the atrioventricular valves controls blood flow between the __ upper & lower chambers
which valve prevents blood flow into atria when the ventricles are contracting? atrioventricular valve
the atria is the __ chamber receiving
the ventricles are the __ chamber discharging
the semilunar valves consist of: pulmonary & aortic vavles
the semilunar valve prevents backflow in ventricles when ventricles are: relaxing
gap junctions are cell junctions that: allows ions to move across the heart - heart beats as unit
this cell junction acts as an anchor - holding cells together as heart beats. desmosomes
where are gap junctions & desosomes located? intercalated disc
Created by: Mariahj25



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