Blood Flashcards
What does RAS stand for?
Reticular activating system
What is the job of a white blood cell?
Protection from infection
What is the special protein called that is contained in a red blood cell?
Haemoglobin
How many pints of blood does the average sized man contain?
12
Do platelets help coagulation?
Yes
Where is red bone marrow found in adults?
In the flat and irregular bones
What are the four main components of blood?
Plasma, red blood cells, white blood cells and platelets
What is whole blood composed of?
Approx. 55% plasma and 45% blood cells
How much of your total body weight is blood?
Approx. 7-8%
How much blood does the average sized woman contain?
Approx. 9 pints
What is plasma?
The liquid component of blood consisting of water, sugar, fat, protein and salts
What is the shape of a red blood cell?
Biconcave disk with flattened centre
What is erythropoietin?
Hormone produced primarily in kidneys which controls production of RBCs
How long do RBCs take to mature?
Approx. 7 days
What are leukocytes?
White blood cells protecting the body from infection
What is a neutrophil?
A form of white blood cell that is an immediate response cell
What is the role of the T lymphocytes?
Regulate function of other immune cells and directly attack various infected cells and tumors
What is the role of the B lymphocytes?
Make antibodies that target bacteria, viruses and other foreign materials
What are thrombocytes?
Platelets, which are small fragments of cells that help with coagulation
What do prostaglandins do?
They’re involved in blood clotting
Which vessels carry deoxygenayed blood?
Veins
What are the smallest blood vessels and connect arteries and veins?
Capillaries
Hiw many litres of blood does the average adult pump per minute?
5
