Evolutionary biologists believe that humans needed wisdom teeth, which are the third set of molars, a long time ago when their diet consisted almost entirely of tough foods such as roots, leaves and nuts. As humans began... More »

www.reference.com Science Human Anatomy Bones

Typically, the upper wisdom teeth have three roots, and the lower ones have two. The wisdom teeth, also called third molars, are the farthest back on each side of the mouth. A few people have more than four wisdom teeth,... More »

On average, approximately 35 percent of people never develop wisdom teeth. This is highly dependent on ethnicity; nearly 100 percent of indigenous Mexican people, for example, never develop third molars, while almost 100... More »

An adult human mouth typically contains 32 teeth, including eight premolars, 12 molars, eight incisors, four canines and four wisdom teeth. Children generally have 20 deciduous or baby teeth, including eight molars, eigh... More »

Anthropologists believe the probable function of wisdom teeth is a response to the coarse diet that earlier humans had. Foods such as roots and nuts required more chewing before swallowing. More »

The typical gorilla diet includes bark, bamboo shoots, leaves, fruit, flowers, roots and stems, while the western lowland gorilla also eats ants, termites and larvae. The gorilla's diet changes based on location and the ... More »

The jawbone, or mandible, is the bone that forms the lower part of the skull, holds the lower set of teeth in place and, combined with the upper jaw, or maxilla, forms the mouth, according to Healthline. Because it holds... More »

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