Circulatory System Flashcards
Test your understanding of how the body distributes oxygen and nutrients to cells around the body and removes waste such as carbon dioxide. This is an activity delivered by our Circulatory System also known as the Cardiovascular System.
What is the main function of the Circulatory System?
To supply oxygenated blood around the body and remove deoxygenated blood and waste products (e.g. carbon dioxide)
What three organs make up the Circulatory System?
Blood
Vessels
Heart
What does blood do?
It carries and distributes oxygen, nutrients, antibodies, heat and hormones throughout the body.
It also collects waste products such as carbon dioxide.
What are the main functions of blood?
Transportation
Protection
Heat regulation
Clotting
What type of tissue is blood?
Connective Tissue
What are the four components of blood?
Plasma
Red blood cells (Erythrocytes)
White blood cells (Leucocytes)
Platelets (Thrombocytes)
How many pints of blood does an average adult body hold?
10.6 pints
What component of blood is the largest?
Plasma (about half of the total volume of blood)
What is Plasma and it’s role in blood?
It is 90% water and supplies water and regulates the body’s temperature by carrying heat round the body.
It also carries dissolved substances for storage and use around the body e.g. glucose and vitamins.
What is the main protein in Plasma?
The main protein is called Albumin which stops fluid from leaking into tissues.
What is the formal name for red blood cells and what do they do?
Erythrocytes carry oxygen needed for cells to product energy. They make of 40% of the bloods volume.
Where are red and white blood cells formed?
They are formed in bone marrow of long bones.
What is the main protein in red blood cells?
The main protein is haemoglobin, which allows oxygen to be collected in the lungs by binding molecules to them. It does the same when collected carbon dioxide for removal.
What is the formal name for White Blood cells and what do they do for the body?
Leucocytes look for bacteria; there are 5 types of cells. They protect against viral infections and produce antibodies.
What is the formal name for Platelets and what is their function?
Thrombocytes enable blood clotting to take place. When they are exposed to the air a protein is released to enable a blood clot to form.
