HUMAN NUTRITION

Detailed explanation-1: -The incisors, located in the middle front of the lower and upper jaws, cut and gnaw pieces of food. The molars, in the back of the mouth, grind and chew.

Detailed explanation-2: -Premolars are used to tear, grind and crush food into smaller bits.

Detailed explanation-3: -Behind the canines are the premolars, or bicuspids, which grind and mash foods. There are two sets, or four premolars, in each jaw. The molars, found behind the premolars, have points and grooves, and allow for vigorous chewing.

Detailed explanation-4: -Mechanical breakdown is when you physically break food into pieces. Mechanical breakdown starts in the mouth, with the teeth tearing, ripping, and grinding food into smaller pieces. The mechanical breakdown also occurs with the muscular action of the esophagus, stomach, and small intestines.