large and small intestine, gallbladder, pancreas, and spleen, Toward the bottom half
of the animal we would find all of the reproductive system.
Secure your specimen ventral side up, with the legs spread laterally with thread
or pins (thread under the pan works better, usually).
Beginning at the opened skin of the throat, and cutting very shallowly (scissors
work better than scalpels for this), make a medial ventral incision the length of
the body, then lateral incisions at the collar bones, the posterior margin of the rib
cage, and at the hips, cutting deep enough to reach the body cavities but not so
deep as to damage the organs inside.
Free the resulting flaps of tissue, gently disconnecting it from underlying tissue
with a blunt probe or careful cutting. You can pin the flaps aside or completely
Look in the abdominal cavity. The abdominal organs may still be covered with a
membrane, the peritoneum, but this usually comes off with the overlying layers.
Another membrane, the mesentery, surrounds and supports most of the digestive
system and its related circulation.
Abdominal organs include liver, stomach, pancreases, large and small intestine,
gallbladder, kidney, and bladder.