Download Pig Dissection Lab - Student Sheet Spring 2016

Unit 10 – Dissection
Fetal Pig Dissection and Basic Body Organization
Required Materials:
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Gloves
Fetal pig
Goggles
Dissecting tools / Instrument Box
Dissecting pan with a wax bottom
Rubber bands/ threads
Assignment 1 External Features (Figures 10.1to 10.3)
The pigs have been preserved in formalin, and then stored in a proprietary preservative fluid. This fluid
is not as toxic as formalin, but you still need to wear gloves and goggles when handling the specimens.
Work in groups and ensure that you see pigs of both sexes!
1. Obtain a pig and place it in a dissection pan.
2. Locate the following positions:
Superior
Cranial
Anterior
Dorsal
Median
Inferior
Caudal
Posterior
Ventral
Lateral
3. Locate head, neck, trunk, tail, and abdomen.
4. Examine the head. Locate External Ear, Eye lid, Nose and Mouth
5. Locate the fore limb and hind limb.
6. Locate Shoulder, Hip, Elbow, Knee, Wrist, Umbilical Cord and Anus
7. Determine the sex of the pig.
Assignment 2 Internal Anatomy (Figures 10.6 to 10. 9)
The purpose of dissection is to expose the various organs of an animal for study. You must
understand that dissecting must be accomplished with the most minimal damage to the specimen.
Make sure you use the protective gloves given to you by your instructor. In addition, wash your
hands thoroughly after lab class activity.
Before you begin your dissection to examine the internal anatomy of the fetal pig, you must position it
in the dissection pan as seen in Figure 10.4. Draw the lines with marker pen (Figure 10.5). Make
incisions by following those lines in sequence. After making the incision and exposing the thoracic and
abdominal cavities, you will locate the following organs:
Tongue
External/Internal Nares
Palate
Esophagus
Trachea
Epiglottis
Larynx
Thoracic Cavity
Ribs
Heart
Pericardium/Pericardial membrane
Diaphragm muscle
Abdominal Cavity
Liver
Gall Bladder
Stomach
Spleen
Pancreas
Small Intestine
Large Intestine (Colon)
Rectum
Kidney
Bladder (urinary)
Umbilical cord
Lung
U10 - Fetal Pig Dissection
Name____________________
**Before you begin filling out this lab report you must complete Assignments 1 & 2. After Performing
Assignments 1 & 2 in class, you must complete Assignments 3 to 6 as given below. You can use your notes
and lab sheets to complete the information below.
Assignment 3
Match the following terms:
____ 1.
Separates thoracic and abdominal cavities
a. heart
____ 2.
Toward the belly side
b. spleen
____ 3.
Large pump which pumps blood
c. stomach
____ 4.
Organ located within the abdominopelvic cavity
d. ventral
____ 5.
Organ located directly below the stomach
e. diaphragm muscle
Assignment 4
Fill in the blanks:
1. What is the function of the Digestive system?
2. What is the function of the urinary system?
3. What is the function of the respiratory
system?
4. Name the system that is associated with
delivery of oxygen, nutrient molecules, and
hormones and the removal of carbon dioxide.
5. Name the structure that is involved in blood
filtration.
Assignment 5
Name the system in which these organs are located:
1. Liver
2. Heart
3. Lungs
4. Kidneys
5. Esophagus
6. Bladder
7. Diaphragm muscle
Assignment 6
Complete these sentences:
1.
The ________________________ connects the fetus to the placenta of the mother.
2.
The heart is located on the ____________________ side of the body.
3.
The covering of the heart is called _______________________________________.
4.
The function of the spleen is _______________________________________________________.
5.
The diaphragm muscle is found on the underside of the ___________________.
6.
Which organ is where digestion of food and absorption of nutrients? ____________
and _______________________
7.
The function of the kidney is _______________________________________________________.
8.
Anatomical orientation towards the back of the body is __________________________________.