Blood, Body Defences And Immunity Section 3 Flashcards
Which type of tissue best describes blood
Connective
Whole blood that has been prevented from clotting and allowed to stand in a test tube will do what
It will separate to 55% plasma and 45% cells
The term used to describe blood cell transfusion in the bone marrow is
Haemopoiesis
Which blood group is known as the universal donor
Blood group O
In the blood stream, red blood cells transport what
Oxygen and carbon dioxide
White blood cells also known as leukocytes have what
Nuclei
What is the life span of red blood cells
Usually about 120 days
Thinking about homeostasis. What feedback system is blood clotting (coagulation)
Positive feedback system
Which important constituent of blood is absent from lymph
Erythrocytes
Lymph is a clear watery fluid that transports plasma proteins back to the bloodstream. It also carries away bacteria and cell debris from damaged tissues, which can then be filtered out and destroyed by lymph nodes
True
Which important protective cells are found within lymph nodes
Lymphocytes and macrophages
