60 PHYSIOLOGY FOE THE LABORATORY. 



d. Find the opening into the gullet, or oesophagus. Is 

 it ventral or dorsal to the glottis ? 



e. Sketch. 



IV. THE (ESOPHAGUS. 



Trace the tube from its opening in the pharynx to the 

 stomach. 



a. Through what cavity does it pass ? 



b. Through what part of the cavity ? 



c. Through what muscle does it extend? 



d. Is it the same size throughout? 



NOTE. A few minutes may well be spent in identifying and 

 reviewing the lungs, trachea, heart, and main blood-vessels, since the 

 organs are here intact. 



V. THE STOMACH. 



The stomach will be found just beneath the diaphragm. 



a. What is its shape and color ? 



b. What is its position in relation to the surrounding 

 organs ? 



c. Does the oesophagus open into the broad or the 

 narrow end of the stomach? 



d. This opening between the oesophagus and the stomach 

 is the cardiac orifice, and this end of the stomach is the 

 cardiac end of the stomach. 



1. Is it on the right or the left side of the 



body? 



2. Why is it called the cardiac end of the stomach ? 



e. From which end of the stomach does the small intes- 

 tine lead? The opening between the intestine and the 



