Fundamentals of Anatomy and Physiology

The Integumentary System 135

Laboratory

Exercise:

The Integumentary System

Materials needed: A compound microscope are keratinized and squamous. Note the two (^)
and prepared microscope slides layers of the dermis: the papillary portion (^)

1. Examine a prepared slide of a section of and the reticular portion. (^)
   skin from the palm of the hand. Try to dis- 2. Examine a prepared slide of hair shafts from (^)
   tinguish the different layers of the epider- the human scalp. Note the structure of the (^)
   mis. Note the basement membrane. Notice hair follicle surrounding the shaft of hair. (^)
   that the cells closest to the basement mem- 3. Your instructor will show you a videotape or (^)
   brane are nonkeratinized and cuboidal, but^ CD-ROM on “The Skin.”^
   those farthest away in the stratum corneum