GLOSSARY 335 



Vac'ci-na'tion (Latin vaccinus, from vacca, cow), the process of 



introducing vaccine (cow-pox) through the skin. 

 Ven'ti-la'tion (Latin ventilare, ventilatus, to fan, from ventus, venti, 



wind), the process of exchanging foul air in a room for pure, 



wholesome air. 

 Ven'tri-cles (Latin ventriculus, diminutive of venter, stomach), the 



thick-walled chambers of the heart. 

 Ver'te-bra (Latin, from verier e, to turn), the name of each of the 



twenty-four bones of the spinal column. 

 Vil'lus, pi. villi (Latin, shaggy hair), the name of the tiny projections 



of the mucous membrane in the small intestine. 

 Vis'ce-ra (Latin), the organs of the abdomen. 



Vit're-ous humor (Latin vitreus, glassy), the liquid filling the eye- 

 ball back of the lens. 

 Vo'cal cords (Latin vox, vocis, voice), the bands of tissue in the 



larynx that produce sounds as the air is expelled from the 



lungs. 

 Vo'mer (Latin, plowshare), a small bone forming the lower part of 



the partition between the nostrils. 



