The purpose of this experiment was to identify the internal and external organs of the fetal pig.
Hypothesis:
External Anatomy
External parts of the pig can be identified.
Digestive System
All digestive organs of the pig can be identified.
Respiratory System
All respiratory system organs of the pig can be identified.
Circulatory System
The circulatory parts of the pig can all be identified.
Materials: The needed for the experiment are as follows:
Fetal pig, preserved
Dissecting tray
Cord/twine
T-pins
Paper toweling
Plastic bags
Gloves
Apron
Procedure:
Part A: External Anatomy First to estimate the age of the fetal pig, use the ruler to measure it. Write the results down in the agriscience notebook. Next, students must …show more content…
Place the pig ventral side up in the tray. The pig should be secure so tie a piece of cord around the left limb, and bring the cord under the tray and tie it to the right hind limb. Repeat the steps with the other side of the pig, and this will insure that it will not move. Next make an incision laterally through the skin below the diaphragm. After that, make the second incision from the first cut to a point anterior to the umbilical cord. Since the group’s pig was a male, cut around either side of the umbilical cord and continue with to separate cuts towards the anus. Make an incision along each hind limb, and use T-pins to pin back the flaps of skin. At this point, the vein that attaches the umbilical cord to the liver should be visible. Cut the vein so that the flap of skin that is attached to the umbilical cord is able to be pinned to the tray. The following parts should be able to be identified at this point: the diaphragm, liver, esophagus, stomach, small intestine, large intestine, caecum, rectum, gallbladder, pancreas, and spleen. Diagrams should be drawn to identify each of the parts of the digestive system. After creating a diagram, remove the liver and try not to cut the major blood vessels that surround it. Make another incision anterior to the stomach and do not cut through the diaphragm. Cut through the rectum and get as close to the anus as possible, remove the digestive tract after that.