Heart - Exam 2 Flashcards
pericardium
double walled sac surrounding heart containing serous fluid
parietal layer - lines fibrous pericardium
visceral layer - lies over heart
pericarditis
inflammation of pericardium
generates friction and potential fluid buildup -> cardiac tamponade
heart walls
epicardium, myocardium, endocardium
epicardium
visceral layer of serous pericardium
myocardium
contractile, muscular layer of heart
endocardium
smooth endothelial cell like layer
right auricle
muscular projection on anterior surface of right atrium
reservoir for deoxygenated blood
right atrium
receives deoxygenated blood from the body through SVC/IVC
pumps blood to right ventricle
right ventricle
receives deoxygenated blood from right atrium via tricuspid valve
pumps blood to lungs via pulmonary artery
ascending aorta
initial portion of aorta, comes up from L ventricle
carries oxygenated blood from heart to rest of body
maintains BP
ligamentum arteriosum
fibrous cord that connects L pulmonary artery to aortic arch
fetus - ductus arteriosus
pectinate muscles
found in inner walls of right and left atrial appendages
increase surface area of atria (improves ability to expand/collect blood)
interatrial septum
separates L and R atria
maintains blood flow between chambers
fetus - foramen ovale
chordae tendinae
connect papillary muscles to AV valves
prevent blood backflow into atria
semilunar valves (aortic and pulmonary)
regulate blood flow from ventricle to arteries
aortic - between L ventricle and aorta
pulmonary - between R ventricle and pulmonary artery
left auricle
muscular pouch that helps pump blood
left atrium
receives oxygenated blood from longs via pulmonary veins
pumps blood to left ventricle
left ventricle
receives oxygenated blood from left atrium via mitral/bicuspid valve
pumps blood to aorta via aortic valve
thick wall for pumping blood to body
aortic arch
gives off branches
brachiocephalic, L common carotid, L subclavian
branches supply blood to head, beck and upper extremities
coronary sinus
collects/drains deoxygenated blood from coronary circulation to right atrium
crista terminalis
separates smooth walled portion of RA from trabeculated portion
origin for pectinate muscles
marks location of SA node
tricuspid valve
between RA/RV
papillary muscles
in ventricles
support AV valves and prevent back flow
fossa ovalis
depression of interatribal septum
remnant of foramen ovale
inter ventricular septum
muscular wall that separates L/R ventricles
pulmonary trunk and arteries
carries deoxygenated blood from RV to lungs
branches of aortic arch
brachiocephalic trunk
left common carotid artery
left subclavian artery
(ABCS)
trabeculae carneae
muscle on inner surface of ventricles
connected to papillary muscles (support valves)
bicuspid valve
between LA/LV
fetal circulation
work to bypass lungs or liver, close after birth
foramen ovale, ductus arteriosus
foramen ovale
fetal circulation, bypasses lung, becomes fossa ovalis
ductus arteriosus
fetal circulation, bypasses lungs, becomes ligamentum arteriosum
coronary circulation arteries
L coronary - anterior inter ventricular artery (LAD), left circumflex artery
R coronary - posterior inter ventricular artery
coronary circulation veins
great cardiac
middle cardiac
coronary sinus
