320 



ANATOMY FOR NURSES [Chap. XVI 



Metabolism 

 of Fats 



Metabolism of 

 Carbohydrates 



Metabolism 

 of Proteins 



Fats arc oxidized and 

 serve as fuel 



Function 



Obesity 



Liberation of energy. 



I Carbon 

 dioxide. 

 Water. 

 ■ Yield heat and energy. 

 Fomi reserve fund for time of need (adi- 

 pose tissue). 

 . Protect protein tissue. 

 Due to excessive amounts of carbohydrates 



and fats. 

 Sedentary life and absence of worry are 

 contributing factors. 



Functions . 



Conversion of simple sugars into glycogen. 

 Dependent f Control of nervous system, 

 upon I Action of enzjuies. 



Furni.sh main source of energy for mus- 

 cular work and all the nutritive processes. 

 Help to maintain the body temperature. 

 Form reserve fund for time of need 



(glycogen). 

 Protect the body tissues. 

 Excess carbohydrates are converted into 

 adipose tissue. 

 Waste f Carbon dioxide. 



Products I Water. 



1 . Conversion of peptones, polypeptids, and amino-acida 



into serum-albumin and serum-globulin, and the 

 conversion of these blood proteins into Uving tissues. 



2. Excess protein molecules are split into two parts. 



One part is converted into urea and excreted, the 

 other part may be oxidized directly, or built into 

 carbohydrates and fats and oxidized later. 



Adequate proteins contain all the materials 



for maintenance and growth of tissue. 

 Inadequate proteins ser\'e same purpose as 

 carbohydrates and fats. 



1. Build up tissue. 



2. Serve same purpose as carbohydrates 

 and fats. 



Nitrogen equilibrium. — Condition when the amount of 

 protein nitrogen taken into the body in food is equal 

 to the amount eliminated in the excreta. 



Classifica 

 tion 



Function 



