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Q: What function does the nasal cavity serve on the fetal pig?
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Continue Learning about Zoology

What is the function of the integumentary system of a pig?

As with most animals, the function of the integumentary system is to serve as a protection barrier. It also produces necessary vitamin D and produces pigment to protect from the sun's harmful rays.


Why is circulation to the lungs bypassed in fetal pigs?

It is bypassed because there is no need for the blood to go to the lungs and get "pick up" if the pig is dead.


The thoracic cavity is surrounded by stiff rib cage while the abodominal cvity has a softer muscular wall?

I realize that this was meant to be a question, and one, if I may add, that is remarkable similar to one I recently answered, in which case I will paste my answer from the last one. The thoracic cavity contains the heart and lungs, both of which are constantly expanding and contracting. The ribs in the thoracic cavity serve both as protection and support, allowing the lungs to expand and contract without running the risk of putting itself into a dangerous situation, including even external threats (or more likely itself). The abdominal contents, opposingly, are more muscular and less prone to damage, and do not need such excessive protection. Moreover, other areas such as the brain are encased in a cranial cavity of bone, and like the thoracic cavity, the organs enclosed are quite fragile. The abdominal cavity, also, contains the stomach, which may expand, which is impossible when a layer of bone is surrounding it, as is expelling it's wastes into the pelvic cavity.


What is secondary adaptation?

A secondary adaptation is a trait that originated as a by-product (i.e., served no function of it's own, but accompanied an adaptation), but was shaped over time by natural selection to serve it's own unique function.


What is the function of an earthworm's seminal vesicals?

The seminal vesicles of earthworm's serve a primary role in reproduction. They are the location of production, storage, and release of sperm in males.