I 20 
MAMMALIAN ANATOMY 
( b ) At the Level of the Umbilicus (i.e., just above the crest of 
the os ilium). 
Girth 
Depth 
Width 
Index 
d/w 
At the end of a 
At the end of a 
At the end of a 
At the end of a 
natural expiration. 
natural inspiration. 
forced expiration. 
forced inspiration. 
2. Vertical Measurements. 
(a) Lower End of Sternum. 
Height above floor 
At the end of a natural expiration. 
At the end of a natural inspiration 
At the end of a forced expiration. . 
At the end of a forced inspiration. 
(b) Distal End of Clavicle. 
• 
Height above floor 
At the end of a natural expiration. 
At the end of a natural inspiration. 
At the end of a forced expiration. 
At the end of the forced inspiration. 
Make a summary of conclusions under four heads: 
1. The changes in the dimensions of the thorax during normal 
breathing. 
2. The changes in the dimensions of the abdomen during normal 
breathing. 
3. The changes in the dimensions of the thorax during forced 
breathing. 
4. The changes in the dimensions of the abdomen during forced 
breathing. 
