EXERCISE 82 



Problem. What is the structure of an animal kidney, and what work does it do ? 



What to use. A beef or sheep kidney. 



What to do. Draw the outside view of the kidney about three inches long. Cut through the kidney 

 lengthwise and make a second drawing ; label the arteries leading blood to the kidney, and veins 

 leading blood from the kidney. In section, note the funnel-shaped cavity in which the fluid is gathered 

 by the gland action of the kidney. Note the tube which leads the waste to the bladder the ureter. 

 Study a microscopic section or chart of one of the tubules found in the kidney a glomerulus and 

 draw below. 



Questions. 1. In what way is the action of the kidney like that of a gland for example, the liver? 



2. In what way is the action of the kidney different from that of a gland ? 



3. What are the physiological differences between the wastes removed from the body by the kidneys 

 and those removed by the large intestines ? 



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