APPENDIX III 



GLOSSARY 



An alphabetical list of technical terms and systematic names, 

 with their derivation and meaning. The following abbreviations 

 are used: G., Greek; L., Latin; F., French. 



A, or AN (G. without), a prefix combined with any terms; Anura; acen- 

 trous. 



AB, (L.), away from; abduct; aboral. 



ABDOMEN (L.), the body region containing the viscera; in mammals Hmited 

 to the region between the diaphragm and the pelvis. 



ABDUCENS (L. ab, plus duco, to lead), Cranial Nerve VI. 



ABDUCT (L. ahduco, lead away from), to carry away from a given point. 



AcANTHiAs (G. acantha, a horn), a genus of sharks; also the specific name 

 of Squalus acanthias, the American dogfish. 



ACENTROUS (G. a, plus kentron, a center), usually in reference to a verte- 

 bra lacking a centrum ; e. g., the atlas. 



ACETABULUM (L. a cup), the socket in which the head of the femur artic- 

 ulates. 



AciPENSER (L. acipenser, a sturgeon), a genus of chondrostean fish, the 

 most primitive living bony fish. 



ACOUSTIC (G. akoustikos, related to hearing), pertaining to the auditory 

 structures or function; acoustic nerve. 



ACROMION (G. acros, top, plus omos, shoulder), the prolongation of the 

 spine of the scapula. 



ACUTE (L. acuo, to sharpen) ; in anatomy, sharp when applied to a proc- 

 ess or angle; in medicine, having a short severe course. 



AD (L. toward, upon), a prefix; adduct, adrenal. 



ADDUCT (L. ad, plus duco, to lead), to carry toward; adductor. 



ADIPOSE (L. adeps, fat) an adjective referring to fat, as adipose tissue. 



ADRENAL (L. ad, upon, near; plus regies, kidney) ductless glands near the 

 kidney's. 



ADRENALIN, the active hormone secreted by the adrenal medulla. 



AFFERENT (L. ad plus jcw, to bear) a nerve, blood vessel, or other struc- 

 ture leading toward a given position. 



ALBINO (L. albus, white) an individual genetically lacking pigment in 

 the skin and its derivatives. 



ALi (L. ala, a wing) a prefix, as in alisphenoid. 



ALLANTois (G. allas, allanto, sausage, plus eidos, form) an outpocketing of 

 the archenteron, posterior to the yolk sac. The embryonic respira- 

 tory organ of the reptiles and birds. 



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