Blood and Immunity Flashcards
People with blood type AB+ are known as
Universal recipients
Which blood type can be safely donated to all people regardless of blood types?
O blood
Plasma is:
The yellowish liquid part of the blood
Which of the following formed by elements fight infections?
White blood cells
Where are blood cells made?
Red bone marrow
What colour is human blood
Always red
What do T cells and why are they important
Helper T cells activate other immune cells and B cells. T cells help to fight off bacteria and foreign cells
Describe a virus and include all 3 lines of defense
- Covid virus enters through nose, cilia does not stop it so it proceeds further down
- Covid virus continues through nasal cavity activating on immune response
- Immune system responds and antibodies fight the virus. Body remembers symptoms (Memory B cells)
List and describes the four components of blood
Red blood cells: Flattened disc with concave center, transports respiratory gases (O2 & CO2)
White blood cells: Spherical but has ability to change shape, has nucleus and organelles, protects body against foreign invaders and infections
Plasma: Sticky straw-colored liquid in which blood cells and platelets are suspended, makes up 55% of blood volume
Platelets: Tiny disc shape piece of cell, helps with blood clotting and stops bleeding
Emergency vehicles only carry O- blood. Why is this common practice?
Because O- blood is a universal donor and can be given to anyone
What are the two types of B lymphocytes?
Plasma cells and Memory B cells
The first line of defense has:
Physical and chemical barriers
Histamines are produced by this type of cell found in our tissues
Mast cell
Plasma makes up how much of the total blood volume?
~55%
What are the two types of T lymphocytes?
Helper T cells and Cytotoxic T cells (Killer T cells)
