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Blood Vessels

alposey

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Across
2.Type of vessel which carries blood toward the heart
4.The __________ pump is when body movement helps venous blood return to the heart
5.Area of lowest blood pressure within the body
10.Middle layer of the blood vessel, with a layer of smooth muscle to control vessel diameter
12.Ability of a compartment within the body to expand and accommodate increased content
13.Small veins leading from the capillary bed
16.Area of highest blood pressure within the body
19.Connective tissue on the outside of a vessel, functioning to anchor and protect the vessel
22.Decreasing the diameter of a vessel, to reduce flow and increase pressure
23.Area of the brain which controls blood vessel diameter
24.Type of vessel which carries blood away from the heart
25.The __________ pump is when breathing helps venous blood return to the heart
26.Smallest blood vessels and the site of gas exchange
27.Increasing the diameter of a vessel, to increase flow and reduce pressure
28.Type of capillary with extensive gaps to allow passage of large molecules
Down
1.Most numerous type of capillaries with only very small gaps to allow substance movement
2.Describes the thickness of a fluid
3.Innermost layer of the blood vessel, functions to reduce friction with blood
6.Receptors which monitor oxygen and carbon dioxide in the blood
7.Majority of smaller arteries in the body
8.Type of capillary with pores to allow greater permeability
9.Central space within the blood vessel
11.Measurement of force exerted by the blood on the wall of a vessel
14.Measurement of the opposition to flow as blood moves through a vessel
15.Many veins contain _________ _________ to maintain forward blood movement
17.Thick walled arteries near the heart which are able to maintain blood pressure when heart ventricles relax
18.Receptors which are activated by blood pressure in the elastic arteries
20.Measurement of the blood flowing through a vessel in a certain amount of time
21.Small arteries which lead to the capillaries

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