92 PHYSIOLOGY FOR THE LABORATORY. 



(2) The stem of the hair is the part outside 



of the skin. Is this stem solid or 



hollow? Is it one piece or made up 

 of parts? 



(3) The follicle is the depression in the skin 



that contains the root. What relation 

 do the walls of the follicle bear to the 

 dermis and epidermis? 



(4) A modified papilla is at the base of the 



follicle over which the root of the 

 hair fits. 



4. The sebaceous, or oil, glands. 



(1) Their shape and size. 



(2) Where do their ducts open? 



5. The perspiratory, or sweat, glands are the tubular 



glands. 

 Find: 



(1) The body of the gland. What is its posi- 



tion, shape, size, and structure. 



(2) The gland duct. Follow its course through 



the epidermis. 



D. The Temperature of the Body. 

 I. THE NORMAL TEMPERATURE. 



Apparatus. A physician's thermometer. 



Place a physician's thermometer under the tongue in 

 the mouth. Close the lips, hold the thermometer there 

 for five minutes, and then read the temperature. 



