sonosim heart anatomy Flashcards
where is the heart positioned
deep in thorax; slightly to the left of the sternum
what does the heart sit atop
diaphragm at level of xiphoid
what accounts for most of the posterior surface of the heart
left ventricle
what accounts for most of the anterior surface of the heart
right ventricle
what makes up the right border of the heart
right atrium
what makes up the left border of the heart
left ventricle and part of left atrium
what covers the heart
pericardium
the pericardium is also referred to as the
pericardial sac
what all is contained within the pericardium
the heart and the proximal roots of the great vessels
how many layers does the pericardium have
2
what is the external layer of the pericardium
fibrous pericardium
what is the internal layer of the pericardium
serous pericardium
which layer of the pericardium is divided into two layers
serous pericardium
what are the two layers of the serous pericardium
parietal and visceral layers
where does the parietal layer adhere to
inner surface of the fibrous pericardium
the visceral layer is also a part of what layer
epicardial layer
what is the function of the small amount of serous fluid that is between the visceral and parietal layers of the hearts pericardial layers
lubricates the layers as they slide past each other
the inferior tip of the heart is also known as the
apex
how many chambers does the heart have
4
what are the four chambers of the heart
two upper atria and two lower ventricles
the walls of the atria are
thin
the ventricles are muscular and
thick walled
which side of the heart is usually bigger
left side
the blood in the right atrium is
deoxygentated
where does the blood in the right atrium come from
vena cava and coronary sinus
where does the right side of the heart deliver blood to
the lungs via pulmonary arteries
where does the blood in the left heart come from
the lungs via pulmonary veins
the left heart delivers blood to the body via the
aorta
