Heart
anatomy of the heart
right side
deoxygenated blood
pulmonary circuit
sending blood right back to the lung
left side
oxygenated bood
systemic circuit
sending 02 blood to the rest of your body
top half
receives blood
atria
bottom half
send out blood
ventricles
right atrium
receives de 02 blood
left atrium
receives 02 blood
right ventricle
sends de 02 blood
left ventricle
send 02 blood
Location
in mediastinum between second rib and fith intercostal space
coverings of the heart
pericardium: water ballon type stuff
clinical connection
pericarditis
inflammation of pericardium
roughens membrane surfaces causing pericardial friction rub
stab you through your chest and draw the fluid out
Layers of the heart wall
epicardium
myocardium
endocardium
gross anatomy of the heart
internal features
two superior atria
two inferior ventricles
interatrial septum: separates atria
inter ventricular septum: separate ventricle
surface features
coronary sulcus
anterior inter-ventricular sulcus
posterior interventricular sulcus
chambers of atria
right atrium: receives de 02 blood
key veins of the right atrium
superior vena cava: blood from top half of your body into your heart
inferior vena cava: blood from lower half of your body into your heart
coronary sinus: returns blood from coronary veins
left atrium: receives 02 blood
ventricles: the discharging chambers
trabecular carneae: to have some texture to allow heart to hold a little bit more blood
papillary mucles
major arteries
aorta: largest artery
heart valves: keeps blood moving in one direction
two major valves
atrioventricular valve: between atria and ventricle
semilunar valves: between ventricles and major arteries
two semilunar valves: prevent backflow from major arteries back to ventricle
clinical connection
incompetent valves
backflow
valvular stenosis
stiff flaps that constrict opening
bloodflow pathway
right side of the heart