1. Heart lies on the left side of the _______ cavity.   Hint First letter clue   2. Food descends from the mouth to the stomach through a muscular tube known as _______.   First letter clue   3. Complex food particles are broken into simple food particles through the process of _______.   First letter clue   4. An average human adult has _______ teeth.   First letter clue   5. A healthy human adult has _______ bones.   First letter clue   6. Salivary glands secrete a fluid known as _______ which helps in digestion as well as in swallowing of food.   First letter clue   7. Oral cavity remains moist due to presence of a fluid known as _______.   First letter clue   Skip to Diagrammatic repr... ⇒