tongue

• sensory receptors for taste are located inside small burps on the tongue known as papillae
• -          receptor for sweetness lie at the tip of the tongue

  -          receptors for bitterness lie toward the back of the tongue

  -          sourness overlaps to areas sensitive to sweetness and saltiness
• by eating hot foods and scrapping tongue, it could lead to the disorder of taste known as ageusia

  -          wherein there is a temporary loss of taste; nevertheless, taste cells reproduce at the rate of complete renewal every