Fetal Pig Dissection Also can be downloaded in.
Fetal Pig Dissection External Anatomy 1. Determine the sex of your pig by looking for the urogenital opening. On females, this opening is located near the anus. On males, the opening is located near the umbilical cord. If your pig is female, you should also note that urogenital papilla is present near the genital opening.
Males do not have urogenital papilla. Both males and females have rows of nipples, and the umbilical cord will be present in both.
What sex is your pig? Make sure you are familiar with terms of reference: In addition, you'll need to know the following terms Medial: Open the pig's mouth and locate the hard and soft palate on the roof of the mouth. Can you feel your own hard and soft palates with your tongue?
Note the taste buds also known as sensory papillae on the side of the tongue. Locate the esophagus at the back of the mouth. Feel the edge of the mouth for teeth. Does the fetal pig have teeth? Locate the epiglottis, a cone-shaped structure at the back of the mouth, a flap of skin helps to close this opening when a pig swallows.
The pharynx is the cavity in the back of the mouth - it is the junction for food esophagus and air trachea. Gestation for the fetal pig is days. The length of the fetal pig can give you a rough estimate of its age.
Observe the toes of the pig. How many toes are on the feet? Observe the eyes of the pig, carefully remove the eyelid so that you can view the eye underneath. Does it seem well developed? Do you think pigs are born with their eyes open or shut?
Carefully lay the pig on one side in your dissecting pan and cut away the skin from the side of the face and upper neck to expose the masseter muscle that works the jaw, lymph nodes, and salivary glands.
The salivary glands kind of look like chewing gum, and are often lost if you cut too deeply.
Remember, that to dissect means to "expose to view" - a careful dissection will make it easier for you to find the organs and structures. Be sure to follow all directions. The Incision Place your fetal pig in the dissecting pan ventral side up. Use string to "hog-tie" your pig so that the legs are spread eagle and not in your way.
Use scissors to cut through the skin and muscles according to the diagram. Do not remove the umbilical cord. In the first section, you will only examine the abdominal cavity the area below the ribcage.
After completing the cuts, locate the umbilical vein that leads from the umbilical cord to the liver. You will need to cut this vein in order to open up the abdominal cavity.
Your pig may be filled with water and preservative, drain over the sink if necessary and rinse organs. Locate each of the organs below, check the box 1. This muscle divides the thoracic and abdominal cavity and is located near the ribcage. The diaphragm aids in breathing. This structure is lobed and is the largest organ in the body.
The liver is responsible for making bile for digestion. This greenish organ is located underneath the liver; the bile duct attaches the gall bladder to the duodenum.Pig Dissection Manual Student Name School Year Condition dried off, and returned to their proper spot.
Figure 1 - External View of a Female Fetal Pig Fetal Pig Dissection Lab Muscle Dissection - Gastrocnemius Muscle Introduction In this lab you are to locate and draw the gastrocnemius muscle of the pig.
In man this is the large calf. System Administrator Note: This archive is designed to be a comprehensive list of all SCP Foundation tales written on this wiki. Please use the navigation tools below to properly locate the tale of your choice.
If you discover that a tale is absent, please contact either the tale author, or djkaktus for assistance. Developmental Biology: Embryogenesis – Cleavage and gastrulation of chick and pig.
Human physiology: Excretion, osmo-iono regulation, kidney failure and transplantation. Dissection: Cockroach: Digestive and Nervous system.
Frog; Digestive and Urinogenital system. Mounting: Body setae of earthworm. If you do the dissection yourself, you will need a dissecting tray and some dissecting tools, or buy our complete Fetal Pig Dissection Kit.
External Anatomy. 1. Most of the pig’s external features are familiar to you – ears, nose, eyes, etc. On the belly you will see the umbilical cord which connected the fetal pig to its mother’s placenta. Fetal Pig Dissection – Lab Guideline In your lab notebook, you may cut and paste images to be identified and labeled.
You must write your pre-lab for homework (do not worry about writing a . Results from a new study may lead to approval of what could be the first drug that ameliorates potentially deadly reactions in children with severe peanut allergies.