What is blood?

The “mother” cell that gives birth to all other blood cells has finally been pinned down after a search lasting more than 20 years. It’s not that we didn’t know about these mother cells before. Otherwise known as hematopoietic stem cells (HSCs), they are found in the bone marrow and replenish the blood throughout life.

1 Answer. A. Hemocytoblast is the answer.

Stem cells in the red bone marrow are called hemocytoblasts. They give rise to all of the formed elements in blood. If a stem cell commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.

All types of formed elements develop from a single cell type — stem cell (pleuripotential cells or hemocytoblasts). Seven different cell lines, each controlled by a specific growth factor, develop from the hemocytoblast.

• Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.
• Red blood cells are responsible for carrying oxygen and carbon dioxide.
• Platelets are responsible for blood clotting.

Blood Basics

• transporting oxygen and nutrients to the lungs and tissues.
• forming blood clots to prevent excess blood loss.
• carrying cells and antibodies that fight infection.
• bringing waste products to the kidneys and liver, which filter and clean the blood.
• regulating body temperature.

Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body. Nutrients from the digestive tract and storage sites to the rest of the body.