What is a fetal pig dissection?
Fetal pigs are commonly used to study mammal anatomy. This medium-sized preserved pig dissection specimen has blood vessels that are double injected with red and blue latex to make veins and arteries easy to identify.
What is the purpose of the fetal pig lab dissection?
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.
How will you fasten the fetal pig to the dissection tray?
tie the back legs and the front legs with the same string and loop that string under the tray to hold the pigs legs apart. how will you fasten the fetal pig in the dissection tray? make an incision through the body wall (down the middle).
What is anatomical dissection?
MeSH. D004210. Anatomical terminology. 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.
Do you know the directional terms of dissection for your fetal pig?
Lateral: Away from the midline. Medial: Toward the midline. Superior: Toward the ventral surface. Inferior: Toward the dorsal surface.
Where do dissection animals come from?
Most animal species used in dissection are predominantly taken from the wild. These include frogs, spiny dogfish (sharks), mudpuppies and other salamanders, birds, snakes, turtles, fish, and most invertebrates. Other animals used in dissection, like fetal pigs and mink, are acquired from slaughterhouses and fur farms.
What are the objectives of dissecting a fetal pig?
Objectives of fetal pig dissection: Identify important external structures of the fetal pig anatomy. Identify major structures associated with a fetal pig’s digestive, respiratory, circulatory, urogenital, & nervous systems. Compare the functions of certain organs in a fetal mammal with those of an adult mammal.
Do female pigs have a urogenital opening?
o Female: The urogenital opening in the female is immediately ventral to the anus and has a small genital papilla marking its location. o Male: The scrotal sac is ventral to the anus and a urogenital opening is just posterior to the umbilical cord. Place the fetal pig on a dissecting tray ventral (belly) side up.
When examining your fetal pig before dissection You note that the umbilical cord is on the?
In the fetal pig, the umbilical cord (Figure 2.3A-B) is attached to the ventral surface of the abdomen.
How is dissection done?
Most dissection involves the careful isolation and removal of individual organs, called the Virchow technique. Dissection of individual organs involves accessing the area in which the organ is situated, and systematically removing the anatomical connections of that organ to its surroundings.
Where do dissection specimens come from?
What are the parts of a fetal pig?
Fetal Pig Glossary Abdomen – The part of the body that lies between the thorax and the pelvis and encloses the stomach, intestines, liver, spleen, and pancreas. anus – the opening at the end of the digestive system from which feces (waste) exits the body. appendix – a small sac located on the cecum.
What does the esophagus do in a fetal pig?
How to dissect a fetal pig. The esophagus (outlined in blue) is a muscular tube connected from the pharynx to the cardiac sphincter of the stomach, propelling food to the stomach. The muscle allows for the esophagus to undergo peristalsis , which will move the food to the stomach in slow squeezing waves.
What is the anatomy of the fetal pig?
The anatomy of a fetal pig is similar to that of the adult pig in various aspects. Systems that are similar include the nervous, skeletal, respiratory (neglecting the under developed diaphragm), and muscular.
What is a fetal pig?
Fetal pigs are the unborn piglets of sows that were killed by the meat packing industry. These pigs are not bred and killed for this purpose, but are extracted from the deceased sow’s uterus. Fetal pigs not used in classroom dissections are often used in fertilizer or simply discarded.