Blood Chp25 Flashcards
What is plasma
the liquid part of blood
What is plasma made up of
90% water, 7% proteins, 3% dissolved materials that are being transported
What is the role of plasma
transport dissolved materials such as glucose, amino acids, minerals, vitamins, salts, carbon dioxide, urea and hormones
What is serum
plasma from which the clotting proteins have been removed
How long do red blood cells live for
4 months
What is the role of red blood cells
transport oxygen
Characteristics of white blood cells
larger than red blood cells, no definite shape, have a nucleus
What is the role of white blood cells
defend the body against infection and fight infections already present in the body
What do phagocytes do
surround bacteria and digest them
What is the role of platelets
clot the blood when damaged body cells produce chemicals that stimulate them to clot
What are the functions of blood
transport food, waste products, hormones, heat made from internal organs, oxygen and defend against disease/infection
What are the main blood groups
A, B, AB, O
What is the rhesus factor
a chemical on the surface of red blood cells dividing the ABO blood groups into positive and negative
Characteristics of red blood cells
no nuclei, no mitochondria, biconcave shape
Types of white blood cells
lymphocytes and monocytes
