Blood is a fluid containing plasma (55%), transparent cells (45%), blood cells, hormones, and more. In many places, blood is referred to as tissue, such as "blood tissue" because blood, like any tissue, is built to fit the same function. Blood is one of the most important substances in the body.
Red blood cells (erythrocytes, Erythrocytes) are the main component of blood. the main function of blood: carrying oxygen to all body cells and removing carbon dioxide from them.
Red blood cell diameter ranges from 6 - 8 μm and its thickness is 2 μm .
A white blood cell is a blood cell belonging to the immune system that protect the body against intruders and pathogens.WBCs take part in dealing with various infections like bacteria, viruses, fungi, and parasites. The immune system and white blood cells also treat cancerous cells.
Click here to watch the full lesson about Blood - "the stuff of life"
In a hospital, three patients were admitted to the ER, a baby with a superficial scratch in his hand who is normally healthy, a young man suffering from dizziness, weakness and fatigue, and an adult with signs of inflammation.
The ER was so loaded with patients that caused the nurse to forget to mark the blood test tubes and paste names on them after taking blood from the three patients, by looking at a microscopic picture of the blood that had been done in the laboratory from those unmarked tubes, what is the most correct answers?