Cardiovascular System(100% Everfree answers)
What is the function of the cardiovascular system? correct answersTransportation
About how much does the heart weigh and what is it's size? correct answersLess than a pound
and the size of a fist
Mediastinum correct answersSpace between the lungs where the heart lies
Apex correct answersThe pointed end of the heart that rests on the diaphragm (it is directed
toward the left hip)
Base correct answersTop part of the heart that is broad
Pericardium correct answersDouble-walled sac that the heart sits in and contains serous fluid
between the layers to prevent friction
Pericarditis correct answersInflammation of the pericardium that results in the decrease in the
serous fluid
What are the 3 layers of the heart wall? correct answers1. Epicardium
2. Myocardium
3. Endocardium
Endocardium correct answersA thin sheet of endothelium that lines the heart chambers, it is
continuous with the linings of the blood vessels (innermost layer of the heart wall)
How many hollow chambers does the heart has? correct answers4
Atria correct answersReceiving chambers, blood comes into the heart
Where are the atria located? correct answersSuperior
Ventricles correct answersBottom chambers that send out blood
Interatrial or intraventricular septum correct answersDivides the heart longitudinally
Which side of the heart receives oxygen-poor blood from the veins? correct answersThe Right
Side
Superior and Inferior Venae Cavae correct answersThe veins that bring in blood from the upper
and lower parts of the body to the heart
Pulmonary Arteries correct answersCarry blood to the lungs where oxygen is picked up and
carbon dioxide is unloaded. (Takes blood to the lungs)
, Pulmonary Vein correct answersVein that brings blood back from the lungs to the heart
Aorta correct answersthe largest artery in the body that sends out oxygenated blood to the body
How many valves are contained within the heart? correct answers4
What is the purpose of the valves? correct answersAllows blood to flow in only one direction
through the heart chambers (from the atria through the ventricles)
Where are the Atrioventricula Valves (AV) located? correct answersBetween the atrial and the
ventricular chambers on each side.
What do the AV nodes do? correct answersThey prevent backflow into the atria when the
ventricles contract
What is the left AV node called? correct answersBicuspid or mitral valve
How many flaps does the bicuspid valve have? correct answers2
What is the right AV node called? correct answersTricuspid Valve
How many flaps does the tricuspid valve have? correct answers3
Semilunar valves correct answersSet of valves that guards the bases of the 2 large arteries
leaving the ventricular chambers
How many leaflets do the semilunar valves have? correct answers3
Left Aortic correct answersthree half-moon shaped cusps (flaps)
Right Pulmonic correct answersthree half-moon shaped cusps (flaps)
When do the AV valves open? correct answersDuring heart relaxation
When are the semilunar valves closed? correct answersDuring heart relaxation
Valvular Stenosis correct answersWhen the valve flaps become stiff
Endocarditis correct answersBacterial infection of endocardium (Enlarges Heart)
Coronary Arteries correct answersBranch from the base of the aorta and encircle the heart
Angina Pectoris correct answersWhen the myocardium is deprived of oxygen and results in a
crushing chest pain.
What is the function of the cardiovascular system? correct answersTransportation
About how much does the heart weigh and what is it's size? correct answersLess than a pound
and the size of a fist
Mediastinum correct answersSpace between the lungs where the heart lies
Apex correct answersThe pointed end of the heart that rests on the diaphragm (it is directed
toward the left hip)
Base correct answersTop part of the heart that is broad
Pericardium correct answersDouble-walled sac that the heart sits in and contains serous fluid
between the layers to prevent friction
Pericarditis correct answersInflammation of the pericardium that results in the decrease in the
serous fluid
What are the 3 layers of the heart wall? correct answers1. Epicardium
2. Myocardium
3. Endocardium
Endocardium correct answersA thin sheet of endothelium that lines the heart chambers, it is
continuous with the linings of the blood vessels (innermost layer of the heart wall)
How many hollow chambers does the heart has? correct answers4
Atria correct answersReceiving chambers, blood comes into the heart
Where are the atria located? correct answersSuperior
Ventricles correct answersBottom chambers that send out blood
Interatrial or intraventricular septum correct answersDivides the heart longitudinally
Which side of the heart receives oxygen-poor blood from the veins? correct answersThe Right
Side
Superior and Inferior Venae Cavae correct answersThe veins that bring in blood from the upper
and lower parts of the body to the heart
Pulmonary Arteries correct answersCarry blood to the lungs where oxygen is picked up and
carbon dioxide is unloaded. (Takes blood to the lungs)
, Pulmonary Vein correct answersVein that brings blood back from the lungs to the heart
Aorta correct answersthe largest artery in the body that sends out oxygenated blood to the body
How many valves are contained within the heart? correct answers4
What is the purpose of the valves? correct answersAllows blood to flow in only one direction
through the heart chambers (from the atria through the ventricles)
Where are the Atrioventricula Valves (AV) located? correct answersBetween the atrial and the
ventricular chambers on each side.
What do the AV nodes do? correct answersThey prevent backflow into the atria when the
ventricles contract
What is the left AV node called? correct answersBicuspid or mitral valve
How many flaps does the bicuspid valve have? correct answers2
What is the right AV node called? correct answersTricuspid Valve
How many flaps does the tricuspid valve have? correct answers3
Semilunar valves correct answersSet of valves that guards the bases of the 2 large arteries
leaving the ventricular chambers
How many leaflets do the semilunar valves have? correct answers3
Left Aortic correct answersthree half-moon shaped cusps (flaps)
Right Pulmonic correct answersthree half-moon shaped cusps (flaps)
When do the AV valves open? correct answersDuring heart relaxation
When are the semilunar valves closed? correct answersDuring heart relaxation
Valvular Stenosis correct answersWhen the valve flaps become stiff
Endocarditis correct answersBacterial infection of endocardium (Enlarges Heart)
Coronary Arteries correct answersBranch from the base of the aorta and encircle the heart
Angina Pectoris correct answersWhen the myocardium is deprived of oxygen and results in a
crushing chest pain.
