GLOSSARY 



Ab-do'men (Latin abdo, to conceal). The largest cavity of the body, 

 containing the liver, stomach, intestines, etc. ; the belly. 



Ab-sor'bents (L. ab and sorbeo, to suck up). The vessels which take 

 part in the process of absorption. 



Ab-sorp'tion. The process of sucking up fluids by means of an animal 

 membrane. 



Ac-com-mo-da'tion of the eye. The alteration in the shape of the crys- 

 talline lens, which accommodates or adjusts the eye for near and 

 remote vision. 



Ac'id, Lactic (L. Zac, milk). The acid ingredient of sour milk ; the gas- 

 tric juice also contains it. 



Al-bu'men, or Albumin (L. albus, white). An animal substance resem- 

 bling white of egg. 



Al-bu'mi-nose (from albumen). A soluble animal substance produced 

 in the stomach by the digestion of the albuminoid substances. 



Al-bu'min-oid substances. A class of proximate principles resembling 

 albumen ; they may be derived from either the animal or vegetable 

 kingdoms. 



Al'i-ment (L. aZo, to nourish). That which affords nourishment ; food. 



Al-i-ment'ary Ca-nal (from aliment). A long tube in which the food is 

 digested, or prepared for reception into the system. 



An-ses-thet'ics (Greek av, an, without, aiffdrjela, aisthesia, feeling). 

 Those medicinal agents which prevent the feeling of pain, such as 

 chloroform, laughing-gas, etc. 



An-i-mal'cule (L. animal' culum, a small animal). Applied to animals 

 which can only be seen with the aid of the microscope. Animalculum 

 (plural, animalcula) is used with the same meaning. 



A-or'ta (Gr. dopr^o/xat, aorteomai, to be lifted up). The largest artery of 

 the body, and main trunk of all the arteries. It arises from the left 

 ventricle of the heart. The name was first applied to the two large 

 branches of the trachea, which appear to be lifted up by the heart. 



A'que-ous Humor (L. aqua, water). A few drops of watery colorless 

 fluid occupying the space between the cornea and crystalline lens. 



A-rach'noid Mem'brane (Gr. dpdx vr )> arachne, a cobweb, and et'Sos, eidos, 



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