What is the purpose of dissecting a fetal pig?

Pigs are excellent and engaging specimens for studying mammalian anatomy. They exhibit hair, a muscular diaphragm, a 4-chambered heart, and mammary glands. Middle school students can use preserved pigs to begin their exploration of human body systems and structure and function.

What is the purpose of doing a fetal pig dissection?

Through a fetal pig dissection, students can develop a better understanding of the: cardiovascular or circulatory system – through the identification & study of body parts such as the left and right ventricles of the heart, aorta, renal artery and vein, pulmonary artery, pericardium, superior vena cava, etc.

What is the purpose of dissecting?

Dissection (from Latin dissecare “to cut to pieces”; also called anatomization) is the dismembering of the body of a deceased animal or plant to study its anatomical structure. Autopsy is used in pathology and forensic medicine to determine the cause of death in humans.

Why do we dissect pigs in biology?

Fetal pigs are unborn pigs used in elementary as well as advanced biology classes as objects for dissection. Pigs, as a mammalian species, provide a good specimen for the study of physiological systems and processes due to the similarities between many pig and human organs.

What can you learn from dissecting a pig?

“The pig helps us learn how certain arteries work inside a living organism,” junior Drew Miller said. “We have been studying hearts and lungs and many other important body systems in class. So by dissecting a pig we can physically see how the systems work together.

How are fetal pigs killed for dissection?

Fetal pigs used in dissection are cut from the bodies of their mothers, who are killed in slaughterhouses so people can eat their flesh.

What is the purpose of the sternum and ribcage in the pig?

The sternum protects the heart, lungs, and blood vessels. The rib cage protects the vital organs and blood vessels.

What is animal dissection?

Dissection is the cutting into of a dead animal to learn about the anatomy or physiology of the animal. It involves cutting into a dead animal while vivisection entails cutting into or dissecting a live animal. Over six million animals are killed for the dissection industry each year.

Why are animals used for dissection?

Dissecting a real animal provides students with more learning opportunities. Using a real animal also helps to instruct students on the ethics of using animals in research. [4] Teachers can explain how the animals were sourced, demonstrate proper treatment of dead animals, and imbue a respect for life among students.

What is the process of dissection?

The Process of Dissection

Dissection involves the removal of fat and other connective tissue to display the relationships of organs and other structures. Dissection should involve as little cutting with scissors or scalpel as possible. The art of good dissection lies in the separation of tissues by means of a probe.

How old are fetal pigs for dissection?

What is a Fetal Pig?

Length Approximate Age
10-15mm 20-30 Days
15-20mm 30-40 Days
20-40mm 40-55 Days
50-75mm 60-70 Days

Why are pigs used to study human anatomy?

Pig hearts are used to study the anatomy of human hearts because they are very similar in structure, size and function to human hearts. These similarities, combined with the fact that they are much more readily available than human hearts, make them an ideal choice for research and study.

How do you dispose of a fetal pig?

The disposal of the pig can be done through the municipal trash system. They need to make sure that there is no free liquid and the carcass needs to be completely wrapped and contained for disposal.”

How do you preserve a dissection?

Seal the dissected specimen in a Ziploc bag to keep it from drying out. Finish the dissection within a week for best results. If you want the specimen to stay fresh longer, use a heavy-duty plastic Ziploc bag, and add a bit of water or glycerin to keep it moist.

What do they use to preserve animals for dissection?

Animals used for classroom dissection are preserved and shipped using various chemicals, such as formaldehyde, Carosafe, Biofresh, and formalin. Formaldehyde is a chemical used as a preservative and also found in cigarette smoke—it’s classified as a human carcinogen, and even short-term exposure to it can be fatal.

How do you store dissection specimens?

We recommend you keep your dissection specimens in a cool and dark place that is away from direct sunlight and out of reach from children and pets. This can be a closet, cabinet or anywhere else that does not get warmer than room temperature. Specimens DO NOT need to be refrigerated!

How do you deal with a dissecting smell?

In order to reduce any smell-based nausea that may arise, those in the lab will often place a strong smelling substance under their nose in order to block out the smell of the cadaver. Two common substances that I’ve found helpful are mentholated topical creams and colognes (or perfumes).

What are possible hazards when doing a dissection experiment?

three potential hazards that exist with dissections are infections and accidental cuts from sharp scalpels and exposure to preservation fluid. Refer to the MSDS for the hazards associated with the preservation fluid, safe handling instructions, and any personal protective equipment that may be required.

What are the workings conditions you should observe in dissecting your specimens?

Safety Precautions and Dissection Procedures

Wear chemical-resistant gloves, chemical-resistant aprons and chemical splash goggles or safety glasses for all dissection activities. Work in a well-ventilated lab only. Open the windows, if possible, and turn on the purge fan if one is available.

Why is it important to know and learn the basic dissection techniques?

The hands-on approach of dissection allows students to see, touch and explore the various organs. Seeing organs and understanding how they work within a single animal may strengthen students’ comprehension of biological systems.

What are the rules of dissection?

Wear goggles, apron, and latex or nitrile gloves when dissecting.

  • Specimens are soaked in a formalin solution that contains a very small percentage of formaldehyde. …
  • Never ingest specimen parts or remove them from the classroom.
  • Sharp instruments, such as scissors and scalpels, will be used to cut tissue.

What precautions should be taken after dissecting a sheep kidney?

We should sanitize our hands first. The person observing it should wear gloves. It should properly be placed on the dissection pan. While dissection handles it with care to avoid the damage of any internal part.

How do you dissect a kidney?

Youtube quote:And these white bits here the calyces. So as the urine is is filtered it will trickle into these calyces go down fill up the pelvis. And then exit via the ureter.

How do you dissect a pig’s kidney?

Youtube quote:Once cut open you will be able to see the three colors. Red before the arteries blue for the veins and yellow for the cavities within the kidney where urine is produced and transported.

What is the main function of the kidney?

Your kidneys remove wastes and extra fluid from your body. Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood.

How are toxins removed from the kidneys?

The kidney excretes toxins through essentially 3 mechanisms: (1) filtration through the glomeruli; (2) passive diffusion, typically from the distal tubules; and (3) active processes where the toxins are transported from the blood as well as into the urine.

What is the primary waste product that the kidneys remove from the blood?

The kidneys remove waste products called urea from the blood through tiny filtering units called nephrons.