Fetal Pig Lab Report

1431 Words3 Pages

Group #1
Brian Brown and Patrick Egan
Ms. Ong
Biology
23 May 2017

Introduction
The first step to dissecting a fetal pig is gathering the necessary tools and equipment. Tools include scissors, pins, a tray, probes, blades, and needles. To prepare the pig, rinse it to remove excess preservatives and place in a dissecting tray. Make sure its back is down, showing its stomach. Then, to ensure the pig is stable, tie a piece of string around one wrist, pass the string under the tray, then proceed to tie the other wrist. Repeat the process for the legs. The pig should then look as it does in figure 1. Next draw the lines indicated in figure 2. Across the stomach, two lines should be drawn, one over the sternum and another at the bottom of the rib …show more content…

Liver: Produces bile, stores glucose as glycogen (largest organ in the pig’s body).
Diaphragm: Muscle forming the bottom of the chest cavity, becomes smaller when inhaling, larger when exhaling (separates thorax from abdomen).
Gallbladder: Stores bile from the liver, then transfers it to the small intestine.
Bile duct: Takes Bile from the gallbladder and empty it into the upper part of the small intestine.
Small intestine: Long, narrow tube where most absorption occurs.
Large intestine: Removes waste from body and removes water from the waste.
Cecum: Between large and small intestines, receives waste products from the small intestine.
Mesentery: Tissues that suspend organs. Holds together parts of the small intestine
Stomach: Sack where digestion takes place, in between the small intestine and the esophagus.
Pyloric Sphincter: Controlling the flow of food from the stomach to the small intestine.
Spleen: Involved in the production of blood cells (included in the immune system).
Thoracic Cavity
Diaphragm: Muscle forming the bottom of the chest cavity, becomes smaller when inhaling, larger when exhaling (separates thorax from …show more content…

Exchanges of oxygen and carbon dioxide takes place.
Atriums:
Right: Receives de-oxygenated blood from the vena cavas and pumps it through the valve to the right ventricle
Left: Receives oxygenated blood from the pulmonary veins.
Coronary artery: Brings blood and nutrients to the heart, also helps to remove waste products.
Ventricles:
Right: Receives deoxygenated blood and pumps it through the pulmonary valve.
Left: Receives oxygenated blood (more muscular than the right ventricle).
Pulmonary Artery: Between the two atria that carries de-oxygenated blood from the right ventricle to the lungs.
Aorta: The largest artery in the body. Brings oxygenated blood from the left ventricle to the tissues.
Vena Cava(s):
Inferior: brings de-oxygenated blood from the LOWER part of the body to the right atrium
Superior: Carriers de-oxygenated blood from the UPPER part of the body to the right atrium
Thyroid gland: Located below the larynx, produces hormones to control the pig’s metabolism.
Trachea: Windpipe. Leads down the larynx to the lungs. Moves air in the respiratory system
Esophagus: Tube that moves food from the pharynx down into the stomach.
Salivary gland: Located in the mouth. Releases

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