Embryo Cardio Development (Drop Box)

Umbilical artery

The medial umbilical ligament represents the embryonic ___________

Kidney

The subcardinal vein develops because of the development of the ___________

Portal vein, hepatocardiac part, IVC and Hepatic veins

All the following develop from the Vitelline veins:

Aortic arch I

The maxillary artery develops from the ___________________

Yolk sac

The vitelline arteries are blood supply to the ___________ in the embryo

Septum primum

The ostium secundum is found in the _______________

Interatrial septum

The left venous valve forms the __________________

Bulbus cordis

The membranous interventricular septum develops from the _____________

Valve of the IVC

The sinoatrial swellings give rise to the ________________ in the adult

Embryonic atrium

Pectinate muscle develops from the ______________

Splanchnic

The proximal bulbar swellings develop from the ____________ mesoderm

Sinus venosus

The smoothed wall portion of the right atrium develops from the ______________

Nothing

The superior right venous valve develops into ____________

Embryonic ventricle

The muscular interventricular septum develops from the ___________________

Pulmonary artery, aorta

The ductus arteriosus connects the _________ to the __________

Hyoid artery; Stapedial artery

Aortic arch II develops into the ________________

Subcardinal vein, sacrocardinal vein, and vitelline vein

The inferior vena cava is formed from all the following:

Umbilical vein, inferior vena cava

The ductus venosus connects the ______________ to the _____________

Umbilical artery

The medial umbilical ligament forms from the _____________

Septum primum

The ostium secundum forms in the _______________

Embryonic ventricle, bulbus cordis

The proximal bulbar swellings are found between the _______________ and the _______________

Left posterior cardinal vein, right umbilical vein and left anterior cardinal vein

During the shift to the right, all the following disappear:

Embryonic ventricle

Papillary muscle develops from the __________________

Sinus venosus; one of the two sinus horns

The coronary sinus develops from the ____________________ or ____________________

Embryonic ventricle

Papillary muscle develops from the _________________

VI (left)

The ductus arteriosus develops from aortic arch ______

(GI tract... single, midline structures)

Superior mesenteric artery, inferior mesenteric artery and celiac artery

The vitelline artery gives rise to all the following:

Round ligament of the liver

After birth the umbilical vein becomes the _____________________

Subcardinal vein

The renal vein forms from the _______________

Splanchnic

The heart develops from the ________________ mesoderm

Right venous valve

The valve of the inferior vena cava develops from the _________________________

Aortic arch II

The stapedial artery develops from

A

The inferior vena cava is formed by all the following except:

A. Supracardinal veins

B. Subcardinal veins

C. Vitelline veins

D. Sacrocardinal veins

Vitelline veins

The hepatic veins are formed from the ____________

B

All the following lead to changes in the circulatory system at the time of birth except:

A. Increased pressure in the right atrium

B. Bradykinin secretion

C. Environmental changes for the baby

D. Trauma of the birth process

III

The internal carotid artery forms from aortic arch:

Septum primum

The ostium secundum is found in the:

Umbilical vein, IVC

The ductus venosus connects the ____________ and _______________

Embryonic atrium

Pectinate muscle develops from the ________________

Left sinus horn

The coronary sinus develops from the ______________

Right venous valve

The valve of the coronary sinus develops from the _____________

Maxillary artery

Aortic Arch I ——>

Hyoid and Stapedial (into the ear) Artery

Aortic Arch II ——>

Common and Internal Carotid Artery (neck area)

Aortic Arch III ——>

Arch of Aorta

Aortic Arch IV Left ——>

Right Subclavian Artery

Aortic Arch IV Right ——>

Develops Quickly and disappears (no adult derivatives)

Aortic Arch V ——>

Left Pulmonary Artery; Ductus Arteriosus (shunt between ventricles... pulmonary trunk -> aorta, due to path of least resistance)

Aortic Arch VI Left ——> __________________ ——> Then through the _________________

Right Pulmonary Artery

Aortic Arch VI Right ——>

Ectoderm (pink), mesoderm (purple), endoderm (blue)

1. Intermediate Mesoderm, 2. Paraxial Mesoderm, 3. Somatic Mesoderm, 4. Splanchnic Mesoderm (becomes heart)

Endothelial Tubes

(Day 18)

Identify the Yellow Arrows

1. Truncus Arteriosus, 2. Bulbus Cordis, 3. Primitive Ventricle, 4. Primitive Atrium, 5. Sinus Venosus

(Day 20)

1. Truncus arteriosus, 2. Bulbus cordis, 3. Primitive Atrium, 4. Primitive Ventricle, 5. Endothelial Tubes

(Day 22)

1. Arteries, 2. Aortic Arch, 3. Distal Bulbar Swellings, 4. Truncus Arteriosus, 5. Bulbus Cordis, 6. Proximal Bulbar swellings, 7. Primitive Ventricle, 8. Atrio-ventricular Swellings, 9. Primitive Atrium, 10. Sino-atrial swellings, 11. Sinus Venosus, 12. Veins

Linear heart

24

What Day?

28

What day?

30

What day?

Artery

vessels that carry blood away from the embryo's heart (oxygenation of blood doesn't matter at this point)

Umbilical artery

Supplies blood to the placenta

Cranial (Truncus Arteriosus)

Arteries come out of _________ aspect

6

How many pharyngeal arches form?

Aortic

For each pharyngeal arches there will be one _______ arch

Lower head and neck

Pharyngeal arches supply :

After baby's first breath

Ductus arteriosus closes when?

Common iliac, internal iliac arteries, pelvis

Descending Aorta divides into ___________, which divides into external (not important for embryo but supplies lower extremities) and _______________ which supplies the __________

Umbilical arteries

Internal iliac arteries lead into

medial umbilical ligaments (can be traced all the way back to internal iliac arteries)

When the baby is born, the umbilical arteries will clamp down & form

Veins

vessels that carry blood toward the embryo's heart (oxygenation of blood doesn't matter at this point)

Liver

Vitelline Veins & Umbilical veins develop because of the __________