cardiovascular Flashcards
What does the circulatory system supply in?
fuel (sugar)
gases (oxygen)
respiratory
where is the heart located
the mediastinum
what is also known as parietal layer of the pericardial
serous pericardium
inner layer of the heart that is thin & delicate
- continuous with outermost layer of the heart
serous pericardium
outermost layer (visceral pericardium)
epicardium
What layer separates epicardium and serous
pericardium cavity
What is used to reduce friction & erosion in the pericardium cavity
Pericardium fluid
Middle muscular layer of the heart
Myocardium
Inner most layer that lines the heart
endocardium
What is within the upper chambers
right and left atria
what is within the lower chambers
right and left ventricles
what separates the chambers
the septum
The external separations and their purpose
- corinary sulcus: separates artia and ventricles
- interventricular sulci: separate ventricles
what are the great vessels of the heart
- superior vena cava
- inferior vena cava
- coronary sinus
function of the
coronary sinus
function of the inferior vena cava
blood from lower part of the body
function of the superior vena cava
blood from upper parts of the body
what do the valves prevent
backward flow of blood
whats in between the heart and ventricle
Atrioventricular
Whats between the left atrium & left ventricle
Bicuspid
Whats between the right atrium & right ventricle
Tripcuspid
How many atria contract simultaneously while the ventricles relax
Two
How many ventricles contract while the atria relax
two
Do all the chambers relax before the cycle?
yes