Flashcards in Blood Deck (16):
Name the 3 groups of cells found in the blood
Erythrocytes, leukocytes and thrombocytes ( platelets).
Name 5 white blood cells present in the blood, and state the main function of each
Neutrophils- phagocytise bacteria
Eosinophils- kill parasitic worms
Basophils- release histamine, heparin anticoagulant
Lymphocytes- amount immune response- direct cell attack or antibodies
Monocytes- develop into macrophages
What is the sequence of events that prevents the loss of blood from blood vessels?
What is the most abundant plasma protein?
What are the 3 stages of Haemostasis?
1. Vascular spasms- vessel/capillaries constrict, vasoconstriction
2. Platelet plug formation- platelets adhere, release chemicals that make other platelets sticky, plug forms.
3. Fibrin forms a mesh- traps RBCs and platelets, forming clot.
What is the fluid portion of the blood?
What is the red pigment in blood and what is it's function?
It's function is to bind iron and oxygen in blood.
What is the lifespan of erythrocytes?
What does the intrinsic conduction system consist of?
Cardiac cells that initiate and distribute a wave of electricity throughout the heart.
Where and how is iron stored in the body?
Liver, also in haemoglobin and ferritin-proteins in liver.
What is a characteristic of anaemia?
A lack of intrinsic factor, which leads to a deficiency in vitamin B12 and formation of large pale cells called macrocytes.
How many litres of blood due most adults have?
Define the terms End Diastolic Volume and End Systolic Volume?
EDV= the amount of blood that collects in a ventricle during diastole.
ESV= the volume of blood remaining in a ventricle after it has contracted.
Define cardiac output?
Amount of blood pumped by each side of the heart in 1 minute.
Define stroke volume?
Volume of blood pumped by each ventricle in one contraction.