REVIEW OK THE UOUK 'M9 



an anliceptio (3R7<i)? What is p'pHin and peptono? IIow ar« 

 p«*pt<)iif8 di^«tinf;ni^*ll«•«l? Whiit ia tliiMr ofluc? What is tlio niilk- 

 cnrillini; ftTiutiitf Wliut is a furiu(<nt (Mi)a ? Wbut is rt>nnot, and 

 for what is it usvd? Where is the t>&8trio jiiioo secreted in birdnP 



What digestion takes place in the iutestinea? Describe the 

 fluids there secreted. What is bile and where aecreted? W*hat is 

 its otVu'e? Discuss pancreatic juice. What is meant by an emul- 

 sion (;{y(xi)? What is the intestinal juice.' 



The various fooils having been digested, they are now to be 

 aborbed or takvn into the bxdily system. Dtseribo how thi-y are 

 absorbed by nnans of villi. Describe wliat a villus is. Into 

 what lluids do these digestive matters pa.ssf 



The blood having received the digested foods, these materials 

 now go to various parts of the body to build up the tissues and 

 repair waste. What is one of the m«)st important new products 

 resulting from digestion? What transformation takes place in 

 the liver? What are ptom.iines and toxins ( 40l»(i) ? 



What is breathing? What is the relative constitution of in- 

 haled and exhaled air? How is the air brought into contact with 

 the bloodt How is the blood cir>Milatfd in the warm bloml.-d 

 animals? What is the nature of blood as it goes from the h«art 

 and returns to it? What becomes of the excess of oxygen in the 

 new or pure bloo«l? Where does the real effect of breathing take 

 place? How is the amount of needed air modified by the con- 

 dition or activity of the animal? IIow does the amount vary be- 

 tween different species of animals? At what point does air be- 

 come unable to support life bt-canse of carl»on dioxid? What is 

 the value of good ventilation? Give any practical hints. 



What is ro<ant by "waste of tissue?" Under what conditions 

 does waste proceed roo«t rapidly? I'nder what conditions is 

 waste repaired? Does the waste take place in exact proportion 

 to the energy or work expended by the individual? When will 

 the animal lay np fat? Under what conditions are milk-pro- 

 diicing animals profitable to their owners? What are the mo«t 

 favorable conditions for the fattening of animaU? What are the 

 ilancers of too close confinement? Is the animal body to b* 

 likened to a mere machine i42fi ? 



