Cardiovascular System Flashcards
what day is the primary heart field formed
16 - 18 days
what is the vitelline veins associated with
yolk sac
how is the blood taken to the rest of the body
umbilical arteries and placenta
umbilical veins
oxygenated blood to the heart from the placenta
whats on the outside of the heart
pericardial cavity
what is the enocardium repsonible for
lining of the blood vessels
endothelial lining
what is the function of the epicardium
what is it from
visceral serous pericardium
lubricate to help allow movement
what does the enocardial tube connect to
dorsal mesocardium that attaches to the posterior wall of the embryo
what does the sinus venous have
left and right horns to allow blood in
where do SHF originate
from the mesoderm near the developing pharyngeal region
proximal and distal outflow tract and right ventricle are derived from what
SFH cells
what does the sinus venosus do
smooth part of the right atrium
coronary sinus
oblique vein of the left atrium
what is the bublus cordia make
trabeculated part of the right ventricle and the outflow parts of the ventricles
what day does the heart begin to loop and fold
day 23
what is the distal outflow tract
truncus arteriosus
what is the proximal outflow tract
conus arteriosus
how does septation of the AV canal occur
four endocardial cusions
the dorsal and ventral endocardial cushions grow and fuse
separating the canals into a left and right AV canal
split into left and right side of the heart
what day does this finish
35
what happens to the spetum prinum
a hole forms called the formane secundum to allow blood through
what does the septum secondum have
formen ovale
how does blood vircualte the heart
right coming from oxygen rich placenta (from sinus verinsousis) out of the arota to the rest of the features
what integrates into the right atrial wall (be specific)
right horn of the sinus venosus
what is the left atrium smooth
proutsion of the pulmonary vein gives contribution to the left wall itself
what forms the spiral fashion of the outflow tracts
endocardial derived outflow tract cushions
what aids this process
what can they stimaulte
migrating neural crest cells
growth of the pulmonary spetum
what unites to form the division
muscular ventricular septum
what does migration of the neural crest cells influence
formation of the outflow trct
what are the two types of closure
functional closure
anatomical remodelling
functional closure - decrease in what
prostaglanids
functional closure - increase
oxygen levels
functional closure decrease in
decrease pulmonary vasuclsar resistance so blood can go to the lungs
anatomical remodelling - what thickens
SMC walls thicken
anatomical remodelling - increase
nutrient diffusion distance
anatomical remodelling degradation of what
elastic lamina
anatomical remodelling thickending causes what
intimal thickening blocks lumen
anatomical remodelling apoptosisi
apotsis and remodelling of DA
