Circulatory System

posterior communicating arteries

this belong to the arterial system which first lie lateral to the infundibulum and then ventral to the mesencephalon

posterior communicating arteries

susupply sa midbrain from mesencephalon to infundibulum

arterial circle of Willis

anterior cerebral & posterior communicating arteries will later become components of the

arterial circle of Willis

provides blood in the ventral surface of the brain

basilar artery

the only visible artery sa brain the rest theoretical

basilar

A single vessel lying in the mid-line, just above the rhombencephalon, this vessel is part of the

rhombencephalon

basilar artery supplies blood for the cerebral circulation part on the

ventral of metencephalon

location of basilar artery

CN 3

lateral of basilar artery are CN

6th aortic arch

branching out/arising from pulmonary trunk, right subclavian artery & ductus arteriosus

4th aortic arch

branching out/arising from aortic trunk

3rd aortic arch

branching out into the internal carotid artery

bulbar septum

separates the conotruncus into two vessels

bulbar ridges

fused in more anterior sections which results into bulbar septum

cranial cardinal vein

a vein that drains deoxygenated blood

Ascending Aorta

Part of the aorta that arises from the heart, carrying oxygenated blood

Pulmonary Trunk

Major blood vessel carrying deoxygenated blood from the right ventricle to the lungs for oxygenation

Left and Right Atrium

Chambers of the heart

4th aortic arch

aortic trunk flows in what aortic arch

6th aortic arch

pulmonary trunk flows in what aortic arch

placenta > left umbilical vein > ductus venosus > liver

direction of blood from from maternal supply

Placenta

bundle of blood vessels from the mother

Liver

filters blood from mother before going to the fetus

celiac artery

sa limbs and nagfloflow from ascending aorta

intersegmental arteries

Paired vessels are continuous with the descending aorta dorsolaterally; these are the

subclavian arteries

fate of intersegmental arteries

6th aortic arch

subclavian arteries arises to become the

to become the 6th aortic arch, the subclavian arteries will come first from the descending aorta

somatopleure

germ layer of foreleg bud

mesonephric (lateral) arteries

supply blood to the glomeruli; kidney

mesonephric (lateral) arteries

Small ventrolateral branches of the descending aorta

superior mesenteric artery

A large midline vessel continuous with the descending aorta ventrally in sections at about the level of the caudal end of the liver.

superior mesenteric artery

supply blood to the duodenum to small intestine

right and left umbilical arteries

The distal end of the superior mesenteric artery within the umbilical cord at the lower part of this is the

caudal artery

blood supply in the tail

caudal artery

A smaller midline portion of the descending aorta can be traced into the tail as the

external iliac arteries

A small lateral branch from each umbilical artery; these branches are the

hips or pelvic region

external iliac arteries supply blood to the

iliac arteries

fate of portion of umbilical arteries

septum primum (septum I)

cavities of the right and left atria are partially separated by a partition

foramen secundum (foramen II)

The septum I is incomplete dorsally as the

septum secundum (septum II)

The left (apparent right) sinoatrial valve flap forms part of the

sinoatrial valve

para di bumalik yung blood may covering called the

right atrium

sinus venosus flows into

right ventricle

conotruncus will be embedded in the

foramen ovale

An opening, the _______________ persists between the septum secundum and endocardial cushion

foramen ovale

space between the sinus venosus and right atrium

septum II

foramen ovale will close and become

sinoatrial valve

fate of septum II

valves

these are tissues that prevent backflow

atrial septum

fate of septum I

atrial septum

separates right and left atrium

right atrium carries deoxygenated, left atrium carries oxygenated blood

need to separate atirum become

sinus venosus

located on the dorsal of right atrium

foramen II

opening right and atrium

foramen I

opening sinus venosus and right atrium

septum I

closes right and left atrium

becomes the atrial septum

septum II

closes sinoatrial valve and right atrium

endocardial cushion

excess tissue at the middle

atrium to ventricle

in the atrioventricular canal blood flows from _____ to ______

atrioventricular canal

The cavities of the atrium and ventricle on each side are continuous via an

tricuspid valve

later develops within the RIGHT atrioventricular canal

bicuspid (mitral) valve

develops within the LEFT atrioventricular canal

endocardial cushion

The atrioventricular canals lie on either side of a midline mass of lightly stained tissue

interventricular septum

The prominent ___________, partially separating the cavity of the ventricle into right and left sides.

Tricuspid Valve

right atrium and right ventricle

Bicuspid valve

left atrium and left ventricle

pulmonary vein

continuous with the left atrium shortly can be seen posteriorly from the foramen secundum

pulmonary vein

only vein that carries deoxygenated blood from the lungs

adult superior vena cava

fate of portion of the common cardinal and the right precardinal vein

adult internal jugular beins

fate if the cranial ends of both precardinal veins

jugular veins

partner of the carotid arteries near the neck which comes from the precardinal veins

cardinal veins

can be the superior vena cava (near portal vein) and the adult jugular veins

left common cardinal vein

forms the adult coronary sinus and oblique vein of the left atrium

Postcardinal veins

lie dorsolateral to the mesonephric kidneys

azygos vein

fate of postcardinal veins

degenerates

fate of left postcardinal vein

azygos vein

the proximal part of the right postcardinal vein forms part of the adult

azygos bein

vein towards the foreleg bud

liver

Tracing sections anteriorly and note that the left (apparent right) umbilical veins enters the

Inferior vena cava

can be located midline superior to the dorsal pancreatic rudiment

left of duodenum

The superior mesenteric vein lies

midline and to the right of the duodenum

The portal vein lies in the

portal vein

major vein in the liver

choroid plexus

source of CSF

mammary ridges

sources of breat or mammary glands

somatopleure

germ layer of mammary ridges

somatopleure

germ layer of the whole umbilical cord