Fundamentals of Anatomy and Physiology

The Respiratory System 431

LABORATORY

The Respiratory System continued^
EXERCISE:

2

4

3

Urogenital opening Umbilical cord

5

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Learning
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Figure 17- 11 Male fetal pig with dissecting guides for incisions. Cut number 4 will expose the thoracic cavity.

2. Once the heart and its corresponding blood
   vessels are removed, follow the trachea down
   until it branches into the right and left pri-
   mary bronchi. Clear tissue away from the
   trachea, being careful not to cut into any lung
   tissue until you see the bronchial branches

that go into the lungs. Review all of the parts

of the respiratory system that you can see in

the thoracic cavity. We observed the naso-

pharynx, oropharynx, and epiglottis when we

did the dissection on the digestive system.

Observe these structures one more time.