NEET PG DENTAL EXAM

Detailed explanation-1: -Red blood cells provide oxygen to body tissues. Most of the time, nearly all red blood cells in the arteries carry a full supply of oxygen. These blood cells are bright red and the skin is pinkish or red. Blood that has lost its oxygen is dark bluish-red.

Detailed explanation-2: -The relative coloration of the skin depends of the amount of melanin produced by melanocytes in the stratum basale and taken up by keratinocytes. Melanin occurs in two primary forms. Eumelanin, the most common form of melanin, exists as black and brown, whereas pheomelanin provides a red color.

Detailed explanation-3: -Blue skin and lips is usually caused by low blood oxygen levels or poor circulation. It can be a sign of a serious problem.

Detailed explanation-4: -Hemoglobin is the iron-containing protein pigment of our blood cells. A lack of oxygen saturation imparts a paler, grayer, or bluer color to the skin. Skin may also become paler as a result of anemia (a reduced number of hemoglobin and/or red blood cells), low blood pressure, or poor circulation of blood.