1. _______ is the organ of smell.   Hint First letter clue   2. Salivary glands secrete a fluid known as _______ which helps in digestion as well as in swallowing of food.   First letter clue   3. _______ is a tubular structure through which urine is excreted out of the body.   First letter clue   4. _______ is a sac-like structure which stores urine.   First letter clue   5. Blood is returned to the heart from various body parts through blood vessels known as _______.   First letter clue   6. There are total _______ premolars in an adult human being.   First letter clue   7. _______ is a muscular leaf-like structure helpful in swallowing of food and speaking.   First letter clue   Skip to Diagrammatic repr... ⇒