Chapter 11 Page Two Flashcards
(17 cards)
What are leukocytes?
White blood cells have a nucleus.
What is the function of some leukocytes in destroying bacteria?
Some destroy bacteria by phagocytosis. Digestive enzymes will destroy the invader and the leukocyte leaving pus.
Example sentence: Phagocytosis is the process by which leukocytes engulf and digest bacteria.
What function do some leukocytes perform in the immune response?
Some form antibodies.
How are leukocytes able to exit capillaries?
They are able to squeeze out of capillary wall by diapedesis.
How can different types of leukocytes be distinguished?
Different types of leukocytes exist. They can be distinguished by nucleus shape.
What are the 3 main types of leukocytes?
Granulocyte
Agranulocyte
Lymphocytes
What are platelets?
Platelets have no nucleus.
What is the function of platelets in blood clotting?
Platelets initiate blood clotting reaction.
Example sentence: Platelets play a crucial role in the formation of blood clots.
What is a thrombus?
A thrombus is a blood clot. It can be serious if the blockage is to a major organ ie. Coronary thrombus, cerebral thrombus.
What is an embolus?
An embolus is a dislodged clot. It can also be dangerous if the blockage is to a major organ ie. Coronary embolism, cerebral embolism.
What are blood groups based on?
Special markers or glycoproteins are located on the membranes of red cells.
What are antibodies?
Antibody - proteins made the immune system to attach to foreign antigens.
What are antigens?
Antigen - the protein markers on the cells.
How many main types of blood groups are there?
4 main types of blood are A, B, AB, O
What are granulocyte
Granulocyte - are phagocytes that respond to bacteria, inflammatory and allergic reactions.
Example sentence: Granulocytes are important for fighting off bacterial infections.
What are Agranulocyte
Agranulocyte - phagocytes that are modified in the lymph and help in the immune response.
Example sentence: Agranulocytes play a key role in the body’s defense against infections.
Lymphocyte
Lymphocytes - T-cells and B-cells which are adaptive and recognize invaders and produce antibodies.
Example sentence: Lymphocytes are essential for the body’s immune response.
