The pleura cover and protect the lungs in a fetal pig.
There are three layers of embryonic tissue present in the pig. These layers are called the ectoderm, mesoderm and the endoderm.
Pig lungs.
Many people see the body covering of a pig as just thick skin. However, a pig's actual body covering is a coarse layer of hair.
Many people see the body covering of a pig as just thick skin. However, a pig's actual body covering is a coarse layer of hair.
Pigs have tough skin as a covering. The skin is naturally dry, but has soft areas under their legs, in their ears and on their bellies.
Lungs collect oxygen.
The main function of a pig's trachea is to breathe. It is part of system of passages that allow air into the lungs.
When the lungs do not function the backup respiratory system takes over the function of the lungs. This is true in a fetal pig.
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A fetal pig's lungs are collapsed because they are filled with fluid while in the uterus. This allows for easier passage through the birth canal and prevents the lungs from being damaged during development. Once the pig is born and takes its first breath, the lungs expand and fill with air.
At birth
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