Blood Vessels (Leaving Cert Biology): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
Name the 3 blood vessel types
Name the 3 blood vessel types
Arteries, veins, capillaries
Describe blood flow in arteries
Describe blood flow in arteries
High pressure, flows in pulses
Artery wall characteristics
Artery wall characteristics
Thick, tough, elastic
Artery lumen size
Artery lumen size
Small lumen
What do arteries carry?
What do arteries carry?
Oxygenated blood away from heart
Describe blood flow in veins
Describe blood flow in veins
Low pressure, flows smoothly
Vein wall characteristics
Vein wall characteristics
Thin walls
Vein lumen size
Vein lumen size
Large lumen
What do veins carry?
What do veins carry?
Deoxygenated blood towards heart
Why do veins have valves?
Why do veins have valves?
Prevent backflow of blood
Type of muscle in arteries & veins
Type of muscle in arteries & veins
Involuntary smooth muscle
How skeletal muscles help venous flow
How skeletal muscles help venous flow
Contract & squeeze veins, push blood to heart
Capillary wall thickness & connections
Capillary wall thickness & connections
One cell thick; connect arterioles to venules