Circulation Flashcards
where do
arteries
veins
carry blood to
arteries carry blood away from the heart
veins carry blood into the heart
all arteries carry ________ blood apart from the __________ ______
oxygenated
pulmonary artery
all veins carry ________ blood apart from the __________ ______
deoxygenated
pulmonary vein
what are the 2 chambers of the heart called
what is the heart wall made of?
the atriums and ventricles
muscle tissue
what vessel:
brings deoxygenated blood into the heart
takes deoxygenated blood into the lungs
returns blood from the lungs to the heart
brings oxygenated blood from heart to the body
vena cava
pulmonary artery
pulmonary vein
aorta
What is the function of:
arteries
veins
capillaries
- carry blood away from the heart at high pressures
- carry blood away from the heart
- supply cells with nutrients and take away waste products
What is the structure of wall of:
arteries
veins
capillaries
- thick strong wall made of elastic fibre
- thinner wall and less elastic fibres
- one cell thick
What is the lumen of:
arteries
veins
capillaries
- narrow (varies with heartbeat)
- wide
- one cell thick
red blood cells:
- nucleus?
- function
- what happens in the lungs
- no nucleus
- transports oxygen from lungs to organs
- haemoglobin combines with oxygen to form oxyhaemoglobin
white blood cells:
- nucleus?
- function?
- nucleus
- part of the defence against microorganisms
platelets
- nucleus?
- function?
- adaptations?
- nucleus
- helps blood clot
- sticky when activated and has an irregular shape
plasma
- what 3 substances does it carry
- carbon dioxide from organs to lungs
- soluble products of digestion
- urea from liver to kidney
what is blood clotting
- a series of enzyme controlled reactions
- changes fibrinogen to fibrin
- forms a network of fibre to trap blood
