The oral cavity includes:
O
Mouth, Pharynx, and Espohagus
O
Mouth, Larynx, and Esphophagus
Larynx, Throat, and Stomach
O
Teeth, Mouth, and Vocal cords

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.