cardiovascular system Flashcards
what are the three components of the circulatory system
heart, blood and blood vessels
the blood vessel that are made of thin walls that allow exchange of molecules between the blood and tissues
capillaries
the blood vessel that that carry oxygenated blood at higher pressure away from the heart to the body. they have thick elastic walls
arteries
the blood vessel that carries deoxygenated blood at low pressure from the body tissues, back towards the heart. they have thick elastic walls
veins
the component of blood that is a clear straw coloured liquid that transports soluable molecules
plasma
the component of blood that is cell fragments with surface proteins to stick together. they clot in areas of bleeding to prevent blood loss
platelets
the component of the blood that carries oxygen from lungs in the body
red blood cells
the component in the blood that is part of the immune system and fights disease
white blood cells
the ______ is the largest artery which is very elastic and thick to withstand high pressure. it carries oxygenated blood away from the heart
aorta
the _____ _____ transports deoxygenated blood to the heart. it is not as thick as the aorta ad the blood is not under as much pressure
vena cava
what is the double circulatory system
made of two loops to keeps the oxygenated and deoxygenated blood separate
what is a baroreceptor
stretch receptor that detects pressure changes
