A pig dissection lab is a common activity in high school biology classes that allows students to learn about the anatomy and physiology of a mammal. The pig is often used as a model for human anatomy because it has many similar organs and body systems.
The dissection begins with the identification of external features, such as the eyes, ears, nose, and mouth. Students then proceed to make a longitudinal incision down the midline of the pig to expose the internal organs.
The first organ that is typically encountered is the diaphragm, which separates the thoracic cavity from the abdominal cavity. The thoracic cavity contains the heart, lungs, and trachea, while the abdominal cavity contains the liver, stomach, intestines, and other organs.
As the dissection continues, students can identify the various organs and their functions. The heart, for example, is a muscular organ that pumps blood throughout the body, while the lungs are responsible for gas exchange, taking in oxygen and releasing carbon dioxide. The liver is a vital organ that plays a role in digestion and detoxification, and the stomach is where digestion of food begins.
In addition to learning about the anatomy and functions of the various organs, students can also learn about the circulatory, respiratory, and digestive systems. The circulatory system consists of the heart, blood vessels, and blood, and is responsible for transporting oxygen and nutrients to the body's cells. The respiratory system includes the lungs and airways, and is responsible for exchanging gases with the environment. The digestive system includes the mouth, esophagus, stomach, intestines, and anus, and is responsible for breaking down food and absorbing nutrients.
A pig dissection lab is a hands-on learning experience that allows students to explore the inner workings of a mammal and gain a better understanding of the human body. It is an important part of a biology education and can help students to develop critical thinking and problem-solving skills.
Fetal Pig Dissection Lab Report
The… Fetal Pig Time Allotment: Muscle dissection; 4 hours. Once we pill off the layer of skin we located the masseter muscle plucking, and pilling at the structure for closer view. The cervix is gently dilated, which may cause a sensation similar to menstrual cramping, a narrow tube is inserted through the vagina and cervix to the uterus so then pregnancy and contents of the uterine internal lining are vacuumed out. For how long has she been away and he not admit it. We also located and viewed the facial nerve which was a thin pale band like structure. The kidneys produce erythropoietin, a hormone that stimulates red blood cell production. Figures: Figure 1: Interior View of a Pig Kidney Renal Medulla Renal Column Renal Pyramid Renal Vasculature Renal Vasculature Minor Calyx Major Calyx Renal Cortex Renal Hilus Region Renal Pelvis 2: Description of what you learned in this lab In this lab, students dissected a pig kidney to deepen their understanding of the excretory system and the role of the kidney within this system.
Secure the pig to the tray using twine. We removed the kidneys and sliced them open to obtain an internal view of the organ. Multimedia Resources: See Appendix D for a list of multimedia offerings. The cut was anterior to the navel and along each side of the navel. External observations of the fetal pig Area Observations Skin Head Region Neck Region Trunk Region Tail Region Insert the photo from Activity 4A step 16.
Once he was done he got inside and enjoyed the rest of his day. This is the pulmonary circuit. This dissection also helped the students become familiar with some of the organs in the body like the liver, heart, and intestines. The function of the umbilical cord is to transport nutrients to the fetal pigs from the mother pig. The students who had the female fetal pig were to dissect the heart which we then viewed the hearts region the superior vena cava, inferior vena cava, aorta, pulmonary truck, brachiocephalic vein, subclavian vein, brachiocephalic artery, and the subclavian artery was observed. Create a small piece of paper with your name and the date on it.
How can you tell? You may loop the rubber bands around the legs as necessary to get a better view into your specimen. Chohan SBI 3UO Introductory Dissecting animals helps students better understand the anatomy of, in this case, a fetal pig, and helps us prepare for what University has to offer, depending on what one will study. Regarding classification, both pigs and humans are in the Kingdom Animalia , Phylum Chordata , and Class Mammalia. Its size was a little larger than human fist. Yes, our fetal pig contained hair on his chin, had eyelashes, and had a tongue as well. The act of vivisection or the practice of experimenting on animals began because of religious prohibitions against dissection of human corpses.
All these organs were easily assessed, and viewed in amazement. Some functions of the labeled structures are also noted on the right sides of those diagrams. Dispose of your specimen using the proper receptacles for organic matter and related materials respectively. This is mostly used when the fetus is roughly from 4 to 9 months in the womb. For some exercises, special instructional suggestions that propose alternative procedures, laboratory equipment, or laboratory techniques are provided. Hypothesis If we dissect a pig Experiment Background: The urinary system is one of the biggest and the most important system in human body which contains two kidneys, two ureters, urinary bladder, and one urethra. The heart was cut continually from the outside of the left atrium downward into the left ventricle.
Due to various religious reasons, human cadavers have not been made available in times past. Then we went back to base of the ear cut up by the earlobe traveling the scalpel right below the eye to the mouth again giving the cut a triangular type cut. Dac and Gouvernel are both from Asian backgrounds in their memoirs "Pigs From Home" and "Wei Li and Me". Double circulation in mammal consists of the pulmonary circuit and the systemic circuit Pickering, 2000. Figures: Figure 1: Exterior Anterior View of a Pig Heart Right Atrium Base Apex Pulmonary Trunk Left Atrium Left Ventricle Right Ventricle Figure 1: Interior Posterior View of a Pig Heart Chordae Tendinae Left Side Septum Right Ventricle Right Atrium Aorta Tricuspid Valve Base Bicuspid mitral Valve Chordae Tendinae Left side Left Ventricle Left Atrium Apex Figure 1: Interior Anterior View of a Pig Heart Chordae Tendinae Left side Bicuspid Mitral Valve Aorta Apex Tricuspid Valve Chordae Tendinae Right side Septum Right Ventricle Right Atrium Left Atrium Left Ventricle Arteries are blood vessels that branch into smaller arteries, and carry oxygenated blood away from the heart.
Then it will go to the retina which will transmit the light to the optic nerve. There are many parts of the eye that help you interpret images: the cornea, lens, retina, iris, and optic nerve. We then Lift the stomach, and identify this light-colored organ which was the spleen. Conclusion: The heart is a pump muscle. On the first pass through the gut, the bacteria in the caecum ferment the food….
Because of this pumping action, the blood can be kept flowing throughout the bodies. There are three types of muscles. As you examine each anatomical structure, try to memorize its name, appearance, and location. . First one is the anterior thorax and another is the posterior abdomen, separated internally by the muscular diaphragm.
There was no mutilation done to the animal, it was simply an exercise to observe and report the anatomy of the cadaver. Arteries, including the aorta Arteries are blood vessels that branch into smaller arteries, and carry oxygenated blood away from the heart. It is located to the right of the left atrium and above the right ventricle, with the tricuspid valve between. Most of the illustrations and labels parallel the textbook very closely, as requested by many. The students who had the female fetal pig were to dissect the heart which we then viewed the hearts region the superior vena cava, inferior vena cava, aorta, pulmonary truck, brachiocephalic vein, subclavian vein, brachiocephalic artery, and the subclavian artery was observed. Finally, we removed the lids of the eye in order to extract it from the head.
Right atrium The right atrium is one of the two atria of the heart, which function to receive blood entering the heart. Heart valves The heart has four valves. Lastly with the use of a probe we pulled down and bend at the triangular cut site below the ear, and cut down slightly with the scalpel. In the end, in order to learn more about the human body, dissection accompanied by experimentation had to be done on humans themselves. INTRODUCTION Many Biology classes use the fetal pig dissection to show what human organs 1 are like, without using an actual human being.
