Return your lab equipment and pig to the supply cart and then thoroughly wash your hands with soap. The soupy, partly digested food that enters the small intestine from the stomach is called chyme. A fetal pig dissection is helpful for anatomy studies because the size of the organs make them easy to find and identify. This gland secretes hormones that control growth and metabolism. It is held in place by tissue called mesentery. Note: Specimens are initially preserved with a formaldehyde solution, the best animal tissue fixative.
It is fascinating to see how all the organs fit and work together. The ureters carry urine to the urinary bladder - located between the umbilical vessels. Two umbilical vessels can be seen in the umbilical cord, and the flattened urinary bladder lies between them. Wrap the pig in damp paper towels and put it in a zip-lock plastic bag. Internal Anatomy of the Fetal Pig Exam 1. The diaphragm in adult pigs moves up and down changing air pressure in the chest cavity causing air to move into and out of the lungs. The gilts placed in smaller groups bore one more pig per litter than gilts in larger groups.
Our teacher let us know that this substance is important for preserving the perfect state to dissect our fetal pig. Within this site, you can navigate to any chapter from the links at the left. Note the vessels that attach to the kidney - these are the renal vessels Male 1. Take hold of the duodenum. Cut the mesentery and unwind the large intestine or colon. This muscle divides the thoracic and abdominal cavity and is located near the ribcage.
A pouch shaped organ that rests just underneath and to the pig's left. The Harris School of Business believes that hands-on learning is an effective way to train its students who are studying to be Professional Medical Assistants. A pig heart and a human heart are similar in their size, structure, and function. I acknowledge that I am not required to consent to receive communications directly or indirectly , as a condition of receiving information, applying or enrolling at these schools. View the inside of the stomach by slicing it open lengthwise. Although the size of the fetus pig is smaller than that of the human body the organization of the major organs and the functions of such organs are still the same.
Under the liver lied the gall bladder, which helps carry food over to the small intestine. Other important body systems have significant differences from the adult pig. The lungs, digestive tract, and kidneys are nonfunctional. Underneath the bladder is where we found the urethra. Our products are durable, reliable, and affordable to take you from the field to the lab to the kitchen. The spleen stores blood and is not part of the digestive system. There is also the ductus arterius which allows blood from the right atrium to be diverted to the aortic arch.
Note and record its length in centimeters. Notice that it is a coiled, narrow tube, held together by tissue called mesentery. Locate the valves between each atrium and ventricle. In the figure of the internal anatomy of the fetal pig, what letter refers to the heart? Under the small intestine lied the pancreas. You will need to cut this vein in order to open up the abdominal cavity. Continue the midsagittal cut down into the pelvic region.
The trachea is easy to identify due to the cartilaginous rings, which help keep it from collapsing as the animal inhales and exhales. The esophagus, which is a pathway for food from the mouth to enter the stomach, was just under the soft palate and to the left of the pharynx. The penis can be located by cutting away the skin on the flap near the umbilical cord. Caution: The scalpel is very sharp. Get a pair for each student! This cavity carries air from the nostrils to the trachea, a large tube in the thoracic which supplies air to the lungs. The ileum is held together by mesentery.
Also, are present on the tongue and intestines on day 77. After completing the cuts, locate the umbilical vein that leads from the umbilical cord to the liver. Use the labeled picture to identify the feathery papillae taste buds on the edges of the tongue, the ridged hard palate in the roof of the mouth with the smooth soft palate behind it, the sharp teeth near the front of the mouth, and the epiglottis, which covers the opening of the trachea windpipe so food cannot enter. Pigs are omnivores, eating plants and animals. Oral Cavity Click image for full-size pdf 1. Note: Specimens are initially preserved with a formaldehyde solution, the best animal tissue fixative.
Why fetal pigs are good dissection specimens. In the female pig, locate two bean shaped ovaries located just posterior to the kidneys and connected to the curly oviducts. Dissection is one of the many hands-on experiences that students at the Harris School of Business undergo as part of their training. Above the diaphragm, center of chest, is the heart. This medium-sized preserved pig dissection specimen has vessels that are double injected with red and blue latex to make veins and arteries easy to identify.
On females, this opening is located near the anus. You want to cut through the skin and the muscle, but if you cut too deep you will damage the internal organs. I want a second opinion. What does the letter C refer to in the figure of the internal anatomy of the fetal pig? Being it was a short day, we cleaned up early before moving on throughout the rest of the system. Otherwise, clean up and return your materials and pig as you did on day 1.