GLOSSARY OF TECHNICAL TERMS 



Abdomen. — That portion of the body which contains the internal 



organs. Belly. 

 Agglutination. — • The massing together of bacteria or the red cor- 

 puscles of the blood when subjected to certain substances. 

 Air sac. — ■ One of the membranous sacs filled with air in different 



parts of the body, especially in the abdominal region. They 



often extend into the cavities of the bones and connect with 



the lungs. 

 Albumen portion of oviduct. — See p. 248. 

 Amoebiasis. — ■ A diseased state produced by amoebae. 

 Anaemia. — A condition in which the blood is deficient either in 



quality or quantity. It is marked by paleness and loss of 



energy. 

 Anterior. — Situated in front of or in the forward part of. 

 Anus. — The external opening of the intestine. Vent. 

 Apathetic. — Lacking in feeUng or ambition. Indifferent. 

 Arachnida. — ■ A class of invertebrate animals including among other 



groups the spiders, scorpions and mites. 

 Articular. — ■ Pertaining to the joints. 



Astringent. — Causing contraction and arresting discharges. 

 Atony. — Lack of normal tone or strength. 

 Atrophy. — A wasting or diminution of the size of a part. 

 Auditory meatus. — ■ The opening into the ear. 

 Autopsy. — The post-mortem examination of a body. 

 Avian. — Pertaining to birds. 



Axilla. — The region under the wing where the latter joins the body. 

 Bile. — The substance secreted by the Uver. GaU. 

 Bronchi. — The tubes which lead from the end of the windpipe 



(trachea) to the two lungs (cf. Fig. 26). 

 Carcinoma. — A malignant tumor or cancer. 

 Catheter. — A tubular surgical instrument for discharging fluids 



from a cavity of the body or for distending a passage. 

 Cecum (pi. ceca). — -A blind intestinal pouch of which there are 



two in the fowl. 

 Cell. — The smallest element of an organized body that manifests 

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>' ' ii. ■ 



