36 



AUMENTAEY SYSTEM 



TuE Limbs on the left side are removed, together with the left walls of the cerebro-spiual, 

 thoraco-abdiiminal, and buccal cavities. The alimentary canal is laid out to display it to 

 advantage^ 



Mouth with posterior nostril, and Eustachian recess con- 

 tinuous with tympanic cavity. 

 Tongue turned forward to show its attachment. 

 Teeth in upper jaw and on palate. 

 Stomach. 



Small intestine succeeding stomach. 

 Large intestine terminating in cloaca. 

 Liver lobed. 

 Pancreas or "sweetbread," pale coloured, near pyloric 



portion of stomach. 

 Spleen, red, near the commencement of twisted portion 

 of intestine. 

 ( Dorsal aorta. 

 ( Inferior vena cava. 



( Glottis, a slit in floor of pharynx leading into lungs. 

 \ Left lung. 

 I Eight ovary. 

 Oviduct, anterior coiled portion of right and terminal 

 IvENAL AND Repkoductive SYSTEMS ( dilated portion of left (see PI. XXII. fig. 8). 



I Left kidney with ureter. 

 ^ Urinary bladder, bilobed. 



Nervous System Brain and spinal cord. 



Skeleton Vert'ebral column enclosing spinal cord, and Skull enclosing 



brain. 

 Fig. 4. Alimentary Canal removed from body — 



OESOPHAGUS or gullet communicating with pharynx. 



f Cardiac or anterior portion. 



( Pyloric portion leading into intestine. 



{Duode'num forming a loop with the stomach. 

 Heum, the twisted portion (Gr. eilein, to twist). 



Circulatory System 



Rbspikatoey System 



Stomach 



Small Intestine , 



Large Intestine , 



Colon, the dilated portion into which the ileum opens. 

 Rectum (L. the seat) opening into cloaca. 



