Grade. 

 Date.. 



EXERCISE 19 



ANATOMICAL STUDY OF THE FOWL 



Object. To study the anatomy of the domestic fowl and to become 

 familiar with the location and appearance of the normal organs. 



Equipment. A number of live fowls, both male and female, and dis- 

 secting instruments. 



Procedure. Kill and dissect the birds in the following manner: 



Step 1. Kill the bird by dislocating the neck, or, better, by chloroform 

 under bell jar. 



Step 2. Prepare the bird for post-mortem study by laying it on its 

 back and fastening it securely to an operating table with wings and legs. Next 

 cut the skin on the breast line, peeling it back each side as far as possible. 

 Cut ribs and raise breast bone, bending it back so that organs are exposed, 

 lying hi their natural position. 



Step 3. Study the following organs and parts as to color, size, weight, 

 shape and location, also their relation to other organs, function and general 

 normal appearance: Liver, spleen, gall bladder, heart, crop, lungs, trachea, 

 oesophagus, proventriculus, gizzard, pancreas, intestines, caeca, kidneys, 

 ovaries and oviduct hi females and testes in males. 



Step 4. Group the organs into the following systems and note the 

 sequence and function of each organ to the system which it helps to make up : 

 Digestive, Respiratory, Reproductive, Circulatory. 



Step 5. Dissect leg and breast muscles and trace relation of these mus- 

 cles to control of flight in wings and movement of toes. 



Step 6. Dissect spinal column, including nerves and brain. Trace 

 some of larger nerves such as optic nerve. 



Leading Questions. 1. For this exercise, why should the birds be 

 killed without bleeding? 



2. What organs are exposed when the breast bone is bent back? 



3. Describe the normal appearance of lung tissue, of liver tissue, and of 



spleen. 

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