Blood and Lymphatic System Flashcards
What is the bloods 3 funtions?
Transportation, regulation and protection.
What is the composition of blood?
It’s made up of plasma, red blood cells, white blood cells and platelets
What is the function of red blood cells?
They transport oxygen from lungs and carbon dioxide from tissues.
Describe the red blood cells structure.
They are aneclear cells with no mitochondria and contains hemoglobin.
What is hemopoiesis?
Blood cell formation witch occurs in the red bone marrow.
What are the white blood cells function?
They eliminate pathogens and can migrate frome blood vessels to tissue sites.
Descibe the white blood cells structure.
They have both a nucleus and mitochondria.
Describe the platelets structure.
They are anuclear and have lagre projections.
What function do platelets have?
They promote blood clotting and stick to walls of damaged blood vessels.
What is coagulation?
It’s the process in which blood clots and the process is initated by platelets that cause a chain reaction leading to formation.
What are the different blood groups?
A+ and A-, B+ and B-, AB+ and AB- , O+ and O-
What is the difference between A, B, AB and O blood?
Type A has A antigens, Type B has B antigens, AB has both angigens and O has none.
Which blood type kan receive which blood?
Type A has anti-B antibodies and Type B has anti-A antibodies and O has both. A can get A and O, B can get B and O, AB can receive all and O can get O.
What is Rh+ and Rh-?
Rh+ is a membrane glycoprotein found on + blood groups that - blood groups do not have.
What is the lymphatic system?
It’s our immune response and surveillance system.
What is the lyphatic systems function?
Drains excess interstitial fluid from the tissues and returns it to the blood and transports lipids and lipid soluble vitamins.
What is lymph?
It’s a clear yellow fluid similar to blood plasma.
What are the lymphatic vessels function?
Transport lymph fluid from tissues back to blood vessels
What are lymphatic tissues?
Nodes where lymphatic vessels meet, contain high number of immune cells (lymphocytes).
What is the thymus?
High density of lymphocytes. Key role in maturation of T cells (positive and negative selection).
What is the spleen?
It acts as a blood filter and has white pulp and red pulp.
What is innate immunity?
Concist of monocrytes and macrophage cells.
Innate vs. Adaptive immunity
Innate “born with” cells recognize pathogens and react the same every time.
Adaptive cells “remember” encountered pathogens and has a faster reaction the second time.
