Veins Take Blood Back to the Heart Flashcards Preview

CGP GCSE Biology > Veins Take Blood Back to the Heart > Flashcards

Flashcards in Veins Take Blood Back to the Heart Deck (5)
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1
Q

Capillaries eventually join up to form?

A

Veins

2
Q

Why don’t the walls need to be as thick as artery walls?

A

Blood is at a lower pressure

3
Q

Why do they have a bigger lumen than arteries?

A

To help the blood flow despite the lower pressure

4
Q

Why do they have valves?

A

To help keep the blood flowing in the right direction

5
Q

What is the largest vein in the body?

A

Vena cava

Decks in CGP GCSE Biology Class (226):