Name: Date: Class:
Fetal Pig Dissection
Go to: http://www.whitman.edu/content/virtualpig
Anatomical References: (Word Bank: ventral, anterior, dorsal, and posterior)
Sexing Your Pig:
1. T or F: An easy way to determine the sex of a fetal pig is to check for the absence or presence of nipples.
2. T or F: Only the male fetal pig has a urogenital opening.
3. T or F: The male fetal pig has a developing scrotal sac, a penis, and a urogenital papilla.
4.
T or F: The picture below is a female.
Digestive: (Word Bank: mesentery, gall, pyloric, rectum, large, salivary, pancreas, pharynx, nares, spleen, rugae, papillae, small)
5. The gland secretes some of the first enzymes in the digestion process.
6. The sphincter controls the movement of food from the stomach to the small intestine.
7. It is the bladder that stores and concentrates bile for release into the stomach.
8. The intestine helps finish the digestive process by reabsorbing water and creating fecal matter.
9. The intestine is the main structure responsible for the absorption of essential nutrients into the body.
Excretory: (Use the numbers from the picture on the right to answer the following questions.)
10. Renal Artery: Takes unfiltered blood from the heart to the kidney.
11. Ureter: Transports urine to the bladder for storage.
12. Bladder: Stores urine until it can be excreted.
13. Renal Vein: Takes filtered blood from kidney back to the heart.
14. Kidney: Reabsorbs nutrients, secretes waste by filtering blood.
Circulation: (Use the following word bank to fill in the words in the flow chart below. Word Bank: right atrium, lungs, right ventricle, left ventricle, left atrium, and CO2/O2 exchange)
Body → → → → → →
Reproduction: (Word Bank: cervix, testes, urethra, scrotal sac, uterus, vas deferentia, oviducts, testosterone, vagina, ovaries, and epididymus)
15. Contain eggs and release sex hormones.
16. The principle sex hormone of the male is .
17. The fetus develops in the .
18. These tubes carry sperm from the testes to the urethra.
19. Fertilization normally occurs in the .
20. produce sperm and secrete sex hormones.
Respiration: (Use the numbers from the picture on the right to answer the following questions.)
21. Lungs: Aids gas exchange with its huge surface area.
22. Bronchi: Distributes air into both lungs.
23. Diaphragm: Contraction creates negative pressure.
24. Nares: Air enters the respiratory system.
25. Trachea: Connects upper and lower respiratory system.