9.2 Structures Flashcards
Order of the blood vessels from which the blood passes through starting from the Vena Cava
Vena Cava
Pulmonary Artery
Pulmonary Vein
Aorta
Vena cava
deoxygenated blood
from the body
to the right atrium
Pulmonary Artery
deoxygenated blood
from the the right ventricle
to the lungs
Pulmonary Vein
oxygenated blood
from the lungs
to the left atrium
Aorta
Oxygenated blood
from the left ventricle
to the body
Atria
receive oxygenated or deoxygenated blood
Ventricles
pump oxygenated or deoxygenated blood
The right side of the heart -
collects deoxygenated blood from the body and sends it to the lungs
The left side of the heart -
receives oxygenated blood form the lungs and sends it to the body. Wj
Atrioventricular Valves
the valves between an atrium and a ventricle
Semilunar valves
the valves present in the aorta and pulmonary artery
Aortic semilunar valve
the valve present in the aorta
Pulmonary semilunar valve
the valve present in the pulmonary artery
septum function
separates the oxygenated blood from the deoxygenated blood
Blood is pumped away form the heart into the -
arteries
Blood returns to the heart in -
veins
Tendons of the heart function
keep the valves of the heart form turning inside out
Tricuspid valve
an atrioventricular valve between the right atrium and right ventricular
Bicuspid valve
an atrioventricular valve between the left atrium and left ventricular
Coronary artery
an artery that provides the heart with oxygen and glucose.
Why are the muscle walls of the ventricles much thicker than the ones of the atria?
The atria pump blood down into the ventricles and the ventricles pump blood to the arteries. The ventricles require more effort so they have thicker muscle walls.
Why are the muscle walls of the left ventricle thicker than the right one?
The left the ventricle has to pump blood to the whole body whereas the right ventricle has to pump to only one organ; the lungs.
