CHAPTER 27

Question 1

• blood vessels carry blood from the heart to the organs of the body and back to the heart
• the space within a blood vessel is called its _____
• there are _____ types of blood vessels:
• -an artery is a vessel that carries blood _____ from the heart (regardless of wether it carries oxygenated or deoxygenated blood)
• -artery walls are composed of _____ and _____ that allow for carrying a _____ and extension of the vessel
• -arterioles are small arteries of _____ created by the _____ of larger arteries
• -_____ and _____ are also located in the walls of arterioles
• -arterioles branch to form _____
• -capillaries are _____ connections between _____ and _____
• -it is at the capillary level where _____ and _____ pass from the _____ into the _____ where _____ and _____ pass from the tissues into the blood

-venules are small veins of _____ formed by the junction of several _____

• -a vein in a vessel formed by the junction of several _____
• -veins are formed by _____ and carry blood back to the heart
• -they have a _____ wall than the corresponding artery
• -most veins, especially those that carry blood against _____ contain _____ that allow for the flow of blood only in one direction: _____ the _____
• -blood moves past the valves via _____ of _____
• -there is a small amount of _____ and _____ in the veins and venules, however it is significantly less than what is found in arteries and arterioles

Answer 1

lumen
5
away
smooth muscle
elastic fibers
pulse
microcirculation
branching
smooth muscle 
elastic fibers
capillaries
microscopic 
arterioles
venules 
oxygen
nutrients
blood
tissues
carbon dioxide
waste materials 
microcirculation
capillaries
venules
tributaries
thinner
gravity
one-way valves
toward
heart
contraction
surrounding muscles 
smooth muscles 
elastic fibers