Term
| Truncus arteriosus becomes ___ |
|
Definition
| Ascending aorta and pulmonary trunk |
|
|
Term
| Bulbus cordis becomes ___ |
|
Definition
| smooth parts (outflow tract) of left and right ventricle |
|
|
Term
| Left horn of sinus venosus becomes ___ |
|
Definition
|
|
Term
| Right horn of sinus venosus becomes ___ |
|
Definition
Smooth part of right atrium
|
|
|
Term
| Right common cardinal vein and right anterior cardinal vein become ___ |
|
Definition
|
|
Term
|
Definition
urachus, then closes to becomes the median umbilical ligament
if it doesn't close, becomes Patent urachus or Vesicourachal diverticulum (bladder outpouching) |
|
|
Term
| Omphalomesenteric duct becomes ___ |
|
Definition
obliterated (Omphalomesenteric duct=Vitelline duct)
if not, becomes Vitelline fistula (total failure of closure) or Meckel's diverticulum (partial closure) |
|
|
Term
| Growth of what embryo structure separates atria from ventricles? |
|
Definition
|
|
Term
| 2 causes of patent foramen ovale |
|
Definition
| excessive resorption of septum primum and/or secundum (both fuse together to form the atrial septum) |
|
|
Term
| The valve of the foramen ovale is formed from what structure? |
|
Definition
|
|
Term
| Until embryo week 10, fetal blood is formed by the ___ |
|
Definition
|
|
Term
| What forms fetal blood from fetal week 10-30 vs. from week 30 onward? |
|
Definition
Week 10-30: blood made by liver
Week 30 onward: blood made by bone marrow |
|
|
Term
| Type of hemoglobin in fetuses vs. adults |
|
Definition
|
|
Term
| Umbilical vein becomes ___ |
|
Definition
| Ligamentum teres hepatis (in falciform ligament) |
|
|
Term
| Umbilical arteries become ___ |
|
Definition
| medial umbilical ligaments |
|
|
Term
| Ductus arteriosus becomes ___ |
|
Definition
|
|
Term
| Ductus venosus becomes ___ |
|
Definition
|
|
Term
| Foramen ovale becomes ___ |
|
Definition
|
|
Term
|
Definition
| Nucleus pulposus of intervertebral disc |
|
|
Term
| Describe blood flow in a fetal heart starting with the umbilical vein. |
|
Definition
Umbilical vein→ Ductus venosus (bypasses liver)→ IVC→
1 (Most): Right atrium→ Foramen ovale→ Aorta
OR
2: Right atrium + Ventricle→ Pulmonary artery→ Ductus arteriosus→ Descending aorta |
|
|
