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Flashcards in Cardiovascular System Deck (35)
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31

What are the characteristics of a vein?

large diameter, thin wall, more connective tissue, fewer elastic and muscle fibres

32

What is capacitance?

Ability of blood vessel to increase the volume of blood it holds without a large increase in pressure

33

How does blood get from the legs to the heart?

muscle contraction, thoracic pump causes negative pressure when breath in and out from diaphragm, valve prevents backflow

34

What does calf muscle pump failure lead to?

Venous hypertension

35

What does gravity cause for the body?

vertical gradient of Venous pressure