Thick, tarry feces that accumulate in a fetal colon are called meconium. Meconium is the first stool of a newborn, composed of amniotic fluid, bile, and cells shed from the intestinal lining. It is typically dark green or black in color and is usually expelled within the first few days after birth. In some cases, if meconium is passed before or during labor, it can pose risks to the baby, such as meconium aspiration syndrome.
Colon
The function of the rectum in the fetal pig is the same as in humans. It is the final 6" of the colon and acts as a warehouse for fecal matter.
In the fetal heart it was called ductus arteriosis.
The function of the rectum in a fetal pig is the same as the function in a human. It is the area that gets rid of the waste that the body does not use.
In the fetal pig, the colon is not functional. Only when the pig is born and starts nursing will the colon (large intestine) beginning extracting water and nutrients from the fermenting solid waste, before pushing the feces out of the body.
The lower trunk area on a fetal pig is called the posterior region of the pig.
An enlarged fetal heart is called fetal cardiomegaly. Fetal cardiomegaly is a symptom of a number of congenital heart defects including tricuspid artesia, Ebstein anomaly, or twin transfusion syndrome.
20ft
external nares
lumbar
Cervical
lumbar