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CHAPTER V. 



MECHANISM OF BREATHING. 



The body of the horse (Fig. 13), viewed apart from his 

 head, neck, limbs, and tail, may be divided into chest and 

 abdomen (belly), the former containing the lungs and 



» Cnillet 



Fosterlar aortO' 



Lungs 



i Stmt^Bt 



Mditeys ^ 



/ H ^'Ureter 



Recium> 



Lcaye Intestine — 



FxG 13.— Internal Organs of the Horse. 



heart ; the latter, the stomach, intestines, liver, bladder, 

 and other vital organs. This division is effected by a 

 broad and someVirhat bell-shaped muscle, the diaphragm or 

 midriff, which is attached, round its margin, to the ends 



