EXERCISE 14: FETAL PIG VIRTUAL DISSECTION NAME: __________________________________ Using the three Fetal Pig Dissection YouTube videos accessible at the links below, answer these fill-in-theblank, labeling and short answer questions. Every question comes directly from something pointed out or said in the videos, except for the very last question, which is based on personal prior knowledge. To watch all three videos will take you about 50 minutes. There is NO WORD BANK for these assignments. If you hear a term you believe answers a question but you do not know how to spell it, LOOK IT UP, using the best spelling you can determine, or use the information you have in the question to look it up. You will remember it better if you take an active part in figuring it out. Fetal Pig Dissection, Part 1: https://www.youtube.com/watch?v=ZWYpnLtXQrg Fetal Pig Dissection, Part 2: https://www.youtube.com/watch?v=eCNxnBbfkVs Fetal Pig Dissection, Part 3: https://www.youtube.com/watch?v=Hdijzf6frgQ&t=6s PART ONE 1. The _____________________ is the external structure that identifies a fetal pig as male. The ______________________, mentioned but NOT pointed out, is a structure that identifies the pig as female. 2. The fetal pig has some blood vessels that are not present in the adult pig that are located in a structure which attached the fetal pig to its mother while in the uterus. This structure is called the ___________________. The three vessels in this structure are the two, more muscular ____________________________ and the larger, darker colored __________________________. 3. The name of the flap-like structure in the neck of the fetal pig that functions to cover the trachea, (also known as the windpipe) when the born pig eats food, is called the _________________________. 4. There are numerous organs in the abdominal cavity of the fetal pig. The two most clearly visible structures in the abdominal cavity are the coiled, small diameter tubes which take up much of the space, called the __________________________ and the structure that is located directly under the diaphragm, called the ____________________. 5. In the pelvic cavity of the fetal pig, there is a hollow, bag-like structure capable of holding fluid, present in both male and female fetal pigs, called the _________________________. This thick structure is made up of ________________________ tissue. PART TWO The structures you are to label in the diagram of an opened, partially dissected fetal pig, below, are ALL PARTS OF THE CIRCULATORY SYSTEM. Use the videos to help you identify the specific vessels, or research the answers using other materials. Once you have named the 7 vessels pointed out by the black lines, draw your own lines and label 3 additional structures of your choice in the diagram. You may label organs, structures, tissues-whatever you choose. Be sure your lines marking your labeled items are clear so there is no confusion as to what you are pointing to. PART THREE Answer the following questions, based upon the videos or other sources of information. They are all mentioned specifically in the videos. 1. What sac (also known as a cavity) does the dissector mention as being like “Saran wrap” in the thoracic cavity? What does he mention as the purpose of this structure? 2. The dissector mentions a structure that is in the neck of the fetal pig, made of cartilage, and sometimes called the “voice box”. It will allow the pig to squeal! What is the scientific name of that structure? What gland, very important to normal growth of the born fetal pig, is located just below that cartilage structure? 3. What endocrine gland, located in the abdominal cavity, is very grainy-looking and located behind the stomach of the fetal pig? What other structure, near this gland, functions as part of the immune system and also serves to remove old, worn-out red blood cells from the circulation? 4. What is the hard palate of the fetal pig attached to that makes it so hard? What muscle in the born fetal pig presses against the hard palate to allow the pig to swallow when eating or drinking? 5. How many “fingers” and “toes” does the fetal pig have on each of its four limbs? 6. What layer of muscle tissue separates the thoracic cavity from the abdominal cavity? What very routine, rhythmic, repeated body process requires the normal function of this muscle? 7. What are three things about the body of a mammal that you did not know before you watched these videos (ASSUMING you actually watched them…) that you now understand? 34 POINTS MAXIMUM SCORE PERCENTAGE WILL BE CALCULATED BASED UPON NUMBER CORRECT, AND WILL BE ENTERED IN YOUR BLACKBOARD AS EXERCISE 14. EVERYONE, IF YOU PUT IN THE EFFORT OF 2 HOURS, WHICH IS THE DESIGNATED TIME FOR A NORMAL LAB, SHOULD SCORE 100 PERCENT. TURN YOUR COMPLETED ASSIGNMENT IN TO ME ON THE DAY OF YOUR LAB DURING THE WEEK OF NOVEMBER 12-16, 2018.
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