Which of the following function/s is/are performed by white blood cells (WBCs)?
a) kill pathogens
b) produce inflammation
c) make antibodies
d) all of these
Types of White Blood Cells:
Among your
white blood cells are:
• Monocytes. They have a longer lifespan
than many white blood cells and help to break down bacteria.
• Lymphocytes. They create antibodies to
fight against bacteria, viruses, and other potentially harmful invaders.
• Neutrophils. They kill and digest
bacteria and fungi. They are the most numerous type of white blood cell and
your first line of defense when infection strikes.
• Basophils. These small cells seem to
sound an alarm when infectious agents invade your blood. They secrete chemicals
such as histamine, a marker of allergic disease, that help control the body's
immune response.
• Eosinophils. They attack and kill
parasites and cancer cells, and help with allergic responses.
Platelets:
Platelets are
also known as……………
a) erythrocytes
b) leukocytes
c) thrombocytes
d) none of these
Each cubic millimeter of blood contains about ………..platelets.
a) 5000-9000
b) 7000-80000
c) 15000-45000
d) 7 million to 8 million
Platelets are the fragments of cytoplasm pinched of from certain…..
a) red blood cells (RBCs)
b) white blood cells (WBCs)
c) certain bone marrow cells
d) all of these
