Fetal Pig Dissection Background:
Identify and record the 4 main body segments Examine the head of your pig Note the eyes. Each eye is protected by three eyelids! The third eyelid is the nictitating membrane — a small mass of tissue in the corner of each eye. Part 2 — Internal Anatomy Be careful when dissecting your fetal pig.
Only remove organs that you are asked to remove. Make superficial incisions before cutting deeper. Dissection set up Using a piece of string, tie one of the pigs ankles.
Place the pig ventral side up on the dissection tray. Bring the string under the dissection tray and tie the opposite wrist. Repeat for the other wrist and ankle to expose the ventral surface. Incisions Using either a scalpel or dissection scissors, make incision Be careful.
Do not cut very deep. It is better to begin with shallow incisions. Cut from the umbilical chord to the head Using your scalpel, make incisions Begin at the umbilical chord and cut toward the posterior end of the fetal pig on either side of the chord. Using dissection scissors, make incision across the collar of the pig.
Find where incision ends along the posterior end of your pig. Using a scalpel, make incision down each hind leg. Locate the rib cage of your pig. The final incision will go directly below the ribs.
Use dissection scissors to cut along the ribcage. Be very careful so you do not damage any of the internal organs. Exposing the Internal Organs Begin folding back the flaps of skin at incision Pin down the flaps to expose the internal organs.
Note the layer of connective tissue holding the abdominal organs in place. This tissue is called peritoneum. Carefully remove the peritoneum to expose the internal organs. Fold back the posterior flap made by incisions.
Organ Identification for the Abdominal Cavity The liver will be brown or dull red It will be found at the anterior end of the abdominal cavity, right below the ribs. Look for the gall bladder, it will be right below the liver. Find the duct connecting the gall bladder and the gall bladder.
Identify the portion of the Small Intestines that the duct connects to. Next, identify the stomach. The stomach will be partially covered by the liver.
Locate where the stomach connects to the esophagus.Dissection Lab. You won't actually need your mask and gloves in here, so you can relax.
But if you want to see dissection photos, there's lots including some new ones of the Sheep Brain.. There's even a couple short videos such as this new one on Frog..
Class worksheets to print out before your dissection are also here (ie. structure checklists . Fetal Pig Dissection: Internal Anatomy In this activity, you will open the abdominal and thoracic cavities of the fetal pig and identify structures.
Remember, that to dissect means to "expose to view" - a careful dissection will make it easier for you to find the organs and structures. Like humans, the pig is a placental mammal, meaning that the fetus receives nourishment from the mother through the umbilical cord.
Because the anatomy of the fetal pig resembles that of other placentals, this laboratory serves two important functions.
This Fetal Pig Dissection Worksheet is suitable for 10th - 12th Grade. In this anatomy worksheet, students perform pig dissection and identify the different parts of a pig's anatomy.
They write a detailed lab report about the process. Study Fetal Pig Dissection Flashcards at ProProfs - Bio 1H Fetal Pig Dissection Practical.