it is weaker
Fetal tissues are not the only source of stem cells. Stem cells can also be found in other sources such as bone marrow, umbilical cord blood, and adult tissues like adipose tissue. These sources provide alternative options for stem cell research and therapy.
Hematopoiesis occurs primarily in the bone marrow of long bones, such as the femur and pelvis, as well as in flat bones like the sternum and vertebrae. Additionally, during fetal development, it occurs in sites such as the liver and spleen before shifting to the bone marrow after birth.
There are several structures in the adult that are derived from the unique requirements of a fetus. The best know are the foramen ovale in the inter-atrial wall and the ligamentum arteriosus between the pulmonary artery and the aorta. These were involved in shunting blood around the lungs during gestation. Other structures include the round ligament of the liver (which was the umbilical vessels that perfused the fetal side of the placenta) and the round ligament of the bladder (which was the umbilicus where urine was excreted through).
The external jugular veins in fetal pigs are relatively larger compared to humans, as pigs have a more prominent external jugular vein. In contrast, the internal jugular veins in pigs and humans are more comparable in terms of size. The anatomical differences between the two species may account for these variations.
fetal hemoglobin differs most from adult hemoglobin in that it is able to bind oxygen with greater affinity than the adult form, giving the developing fetus better access to oxygen from the mother's bloodstream.
The ossa coxae (containing the ililum, ishium, and pubic bones) are not fused in a fetal skeleton like in an adult human.
the fetal bones are much more delicate than the adult
In the fetal skeleton, the ossa coxae (hip bones) are not fully fused, and they consist of three separate bones: ilium, ischium, and pubis. In the adult skeleton, these three bones have fused together to form a single hip bone. Additionally, the acetabulum, the socket where the femur connects to the hip bone, is not fully developed in the fetal skeleton but is complete in the adult skeleton.
The fetal vertebrae are comparing with adult from the curvatures. Some of the curvatures are not seen until after birth.
Two characteristics of the fetal skeleton skull that differ from the adult skeleton are the presence of fontanelles (soft spots) in the fetal skull that allow for flexibility during childbirth, and the incomplete fusion of cranial bones in the fetus compared to the fully fused bones in adults.
The human stomach is bigger than the fetal pig's. This of course is if the human is an adult human.
Cartilage
The ossific centers appear in the intervals between the articular depressions for the coastal cartilages, in the following order: in the manubrium and first piece of the body, during the sixth month; in the second and third pieces of the body, during the seventh month of fetal life; in its fourth piece, during the first year after birth; and in the xiphoid process, between the fifth and eighteenth years. Its component parts are not fused in the fetus.
4 or more
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No. It is hyaline cartilage
Fetal pigs are not as developed as an adult.