The taste buds consists of taste receptors which are also called as gustatory cells. These gustatory cells detect different kinds of tastes in food like sweet, salty, bitter, umami, and sour.
The tongue map is considered as misconception that represents the taste buds specific to a particular type of taste are present on specific regions of the tongue.
But many research findings have found that all areas of the mouth consists of taste buds and these taste buds are sensitive to all kind of tastes and individual taste qualities are not restricted to a single part or region of the tongue. Also the taste buds overlap each other and there is no border between taste buds of detecting different taste stimuli.
Sickle red blood cells can block the blood vessels in the lungs. This reduces oxygen flow to the lungs and can make it hard to breathe. This condition is an emergency and may be life-threatening.