The oral mucosa is the mucous membrane lining the inside of the mouth and consists of stratified squamous epithelium termed oral epithelium and an underlying connective tissue termed lamina propria
Ventilation is the act of moving/pushing air into and out of the lungs.
Your answer is B.) Heterozygous, since the prefix 'hetero' usually means separate or different. Hope this helps.
The lens is the clear oval structure in the eye that focuses light as an image on the retina.
