MICROANATOMY

Detailed explanation-1: -The colour blood red is a dark shade of the colour red meant to resemble the colour of human blood (which is composed of oxygenated red erythrocytes, white leukocytes, and yellow blood plasma). It is the iron in hemoglobin specifically that gives blood its red colour.

Detailed explanation-2: -Humans, along with most other animals, birds, reptiles, and fish, have red blood. We all use an oxygen-carrying blood protein, known as hemoglobin, that contains iron. It’s the iron that gives blood its dark red color in the body. When blood comes into contact with air, it turns the classic scarlet red.

Detailed explanation-3: -Blood is red because of the hemoglobin inside our red blood cells(which is present in our blood). Hemoglobin is a protein that forms a complex with iron molecules and together they transport oxygen molecules throughout the body.

Detailed explanation-4: -The colors of arterial and venous blood are different. Oxygenated (arterial) blood is bright red, while dexoygenated (venous) blood is dark reddish-purple.

Detailed explanation-5: -Blood red is a warm color that can be bright or dark red. The bright red color of crimson is often considered the color of fresh blood, but blood-red color may also describe a dark maroon shade of red.