Circulatory System Flashcards
What are the 4 things that blood is made of
- ) plasma
- ) red blood cells
- ) white blood cells
- ) platelets
Plasma
Carries heat around the body, the liquid part of blood and is mainly made up of water
Red blood cells
Transport oxygen
Where are red blood cells made?
In the bone marrow
What does red blood cells contain?
Haemoglobin
What is haemoglobin
The red pigment in blood
White blood cells
Fight infections
Where are white blood cells made?
Bone marrow
Platelets
Clot blood
Where are platelets formed
In bone marrow, when large cells break down into smaller pieces
What are the 3 main types of blood vessels
Arteries
Veins
Capillaries
The heart
Pumps blood around the body. 70 beats per min.
Cardiac muscle
A muscle that makes up the heart that is very strong and does not tire easily.
What are the 4 chambers of the heart
Right and left atrium (top)
Right and left ventricles (bottom)
What are the parts of the heart?
Chambers
Septum
Heart valves
Septum
The muscle that separates the right and left side of the heart.
Heart valves
Makes sure that the blood can only flow in one direction
Vena cava
Takes blood, low in oxygen from the body to the right atrium
Pulmonary artery
Takes blood low in oxygen from right ventricle to lungs
Pulmonary vein
Takes oxygen-rich blood from lungs to the right atrium.
Aorta
Takes oxygen-rich blood from left ventricle to the body
What does a heartbeat cause?
A pulse of blood in the artery
What causes heart disease?
Smoking
Unhealthy eating
No exercise
