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May be absent in the fetus; if present it is unossified

Quite a bit softer and smaller in the fetus. The kneecap develops throughout childhood and into mid-teens.

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What are two characteristics of the fetal skeleton skull that differ from the adult skeleton?

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.


Does fetal and adult skull have the same bones?

The fetal skeleton is much softer, it has far more bones which fuse by adulthood. also the proporions are much more different, the skull of a fetus is much big in comparison to its body. obviously the fetal skeleton is much much smaller and is more fraile.as development of the facial area of a human develop, the head becomes much less round (so a fetal skeleton would have a rounder head). the face also becomes more defined and features more noticable. I hope this helps.


Is the skeleton cartilaginous or bony during fetal development?

The skeleton is originally cartilaginous during fetal development. Over time, the cartilage is replaced by bone in a process called endochondral ossification, where bone tissue gradually forms and replaces the cartilage framework.


How does a fetal vertebrae compare to an adult vertebrae?

Fetal vertebrae are smaller in size and appear more cartilaginous compared to adult vertebrae. Fetal vertebrae also have different proportions and shapes which change as they mature into adult vertebrae, with the presence of ossification centers being a key difference.


Why is a transplant consisting of fetal tissue less likely to provoke an immune rejection response than tissue from an adult?

Fetal tissue has lower levels of antigens, which are markers that the immune system recognizes as foreign. This makes fetal tissue less likely to provoke an immune response compared to adult tissue, which has a higher amount of antigens. Fetal tissue also has a higher ability to induce immune tolerance.

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