Which of the following is responsible for sending flavor messages to the brain?
the tongue
the papillae
the taste receptors
the taste buds

The answer is The taste receptors.

Explanation:

Taste can be defined as the ability to detect substances through taste receptors (which are responsible for transmitting taste signals to the brain) or as the body sense that allows the detection of dissolved chemicals in the mouth, usually from food. The tongue is covered by approximately 10,000 taste buds or flavor receptors, which are grouped into four types:

1) sweet

2) acid.

3) salty.

4) bitter.

Each of these receptors are more concentrated in certain regions of the tongue surface.