Fundamentals of Anatomy and Physiology

302

LABORATORY

EXERCISE:

Chapter 12

The Endocrine System

Materials needed: A dissecting kit, a fetal pig

from a biologic supply company, and a dissecting

pan

1. Place your fetal pig in a dissecting pan, ventral
   side up. Using your scalpel and pulling with
   your forceps, remove the skin from a square area
   from the middle of the lower jaw, where the ears
   attach, posteriorly to the chest near the sternum.
   Refer to Figure 12-9 cut number 2. Before you
   make your horizontal cut, feel for

the larynx or voice box. Make your horizontal

superior cut just above the larynx being care-ful

not to cut too deeply. Then cut laterally on both

sides, down to the thoracic region. As you make

your horizontal posterior cut, the ster-num will

prevent your scalpel from damaging any tissues.

Now remove the skin and muscle layer attached

to the skin by gently pulling with your forceps

and scraping with your scalpel.

2

4

(^1 3)
Urogenital opening Umbilical cord (^)

5

(^) ®
Learning
Cengage ©
Figure 12- 9 Fetal pig dissection guide. Perform cut number 2 to view the thymus and thyroid
glands.