blood

• blood 


  tissue that transports substances such as oxygen and carbon dioxide
• blood contains: plasma, red blood cells, white blood cells and platelets
• plasma 


  pale yellow liquid that carries red and white blood cells, nutrients (e.g. glucose and amino acids), carbon dioxide, urea, hormones, proteins, antibodies and antitoxins produced by white blood cells
• platelets 


  small fragments of cells; have no nucleus
• plasma 


  involved in blood clotting
• white blood cells 


  defends against pathogens; have nucleus
• red blood cells 


  carry oxygen from heart to all the cells in the body
• red blood cells 


  biconcave disc provides a large surface area
• red blood cells 


  have no nucleus- allows more space to carry oxygen
• Plasma


  The liquid portion of blood that carries cells, hormones, nutrients, and waste products throughout the body
• Red Blood Cells

  Cells responsible for carrying oxygen from the lungs to the rest of the body. They contain a protein called hemoglobin, which gives blood its red color.
• White Blood Cells

  Part of the body's immune system that helps fight infections and diseases. They can be further divided into several different types, each with their own specific function.
• Platelets


  Tiny cell fragments that help the blood clot. When a blood vessel is damaged, platelets clump together to form a plug and prevent further bleeding.
• Hemoglobin


  A protein found in red blood cells that carries oxygen from the lungs to the rest of the body. It gives blood its red color and is essential for delivering oxygen to tissues and organs.