Fetal Pig Extra Credit
Dissection Exercise 3
1. How do the locations of the endocrine organs in the fetal pig compare with those in the human? They are similar except for the pancreas and the adrenal glands. In the fetal pig, the adrenal glands are medial to each kidney and inferior to the pancreas rather than atop to kidneys and superior to the pancreas as in humans.
2. Name two endocrine organs located in the throat region? Thymus gland and thyroid gland.
3. Name three Endocrine organs located in the abdominal cavity. Adrenal glands, pancreas, and gonads.
4. Given the assumption that human beings have more stress than adult pigs, which endocrine organs would expect to be relatively larger in humans? The adrenal glands.
5. Explain why the thymus gland in the fetal pig is so large, relatively speaking. It is so large because it is still a fetus and it will shrink as the big matures.
Dissection Exercise 4
1. Is the fetal pig's lymphatic drainage pattern basically similar or dissimilar to that of humans? Similar.
2. What is the role of the following?
a. Thoracic duct: Receives lymph and drains lymph from everywhere except for what the right lymphatic duct covers.
b. Right lymphatic duct: Drains lymph from the right upper extremity, head, and thorax delivered by the jugular, subclavian, and bronchomediastinal trunks.
3. What differences did you observe between the origin of the common carotid arteries in the pig and in the human? In the pig, the left common carotid artery originates from the brachiocephalic trunk while in humans the left common carotid artery originates from the aortic arch.
4. How do the relative sizes of the external and internal jugular veins differ in the human and the pig? In the fetal pig, both internal and external jugular veins were about the same size in diameter. In humans, the internal jugular vein has a larger diameter than the external jugular vein.
5. How do the brachial veins in the pig