In humans there are 12 pair of ribs .The 8th 9th and 10th pair of ribs are called false ribs as the are connected to the 7th rib by a cartilage. And 11th and 12ths pair of ribs are called floating ribs.
Every now and then you notice that your tongue (usually a healthy pink) is coated in white. While a white tongue is something that can be alarming, there is no need to worry. Most of the time, the cause of a white tongue is harmless and temporary. The surface of your tongue is covered with papillae. If your tongue is entirely coated in white, you are likely to have an inflammation of the papillae that is caused by dead bacteria, debris and dead cells getting stuck among them.
Red Tongue: If your tongue is red (from dark pink to magenta) it could be a sign of nutritional deficiencies, particularly that you may not be getting enough folic acid, vitamin B-12 or vitamin B3. White Tongue: A white coating on your tongue could mean that you are dehydrated. It can also be caused by smoking or drinking alcohol. A white coating can also be a sign of thrush, which is an infection of the mouth with the yeast Candida albicans.