Match the statements/descriptors listed in the left-hand column with the appropr
ID: 65531 • Letter: M
Question
Match the statements/descriptors listed in the left-hand column with the appropriate type of blood vessels listed in the right-hand column.
major vessels that carry blood immediately away from the heart; have wide outside diameters but relatively small inside diameters (lumens); walls are thick, with large quantities of elastin so can easily 'stretch' when large volumes of blood are forced, under high pressure, into these vessels as the heart's ventricles contract
vessels that are responsible for returning blood to the heart; compared to the vessels that carry blood away from the heart, these vessels have similar outside diameters, but much wider inside diameters and larger lumens, largely because they have considerably less smooth muscle relative to lumen size
vessels that also transport blood away from the heart, but compared to the larger vessels from which they branch have thinner, more muscular walls largely due to the lesser amounts of elastin they contain; because of their more muscular nature, they are considered as 'resistance' vessels in the vascular network
vessels considered the 'business end' of the vascular network because they are the sites where actual exchange of gasses, nutrients, and waste products occurs between the blood and tissues and vice versa
vessels with the smallest diameters, thinnest walls (consisting of just a single layer of endothelium cells without any associated elastin or smooth muscle), smallest diameters (so narrow that blood cells must flow through in single file) and the slowest rate of blood through them (because the blood cells must flow through them in single file)
small diameter vessels that immediately precede, or come just before, the capillary beds they 'feed'; their walls consist of a single layer of endothelial cells wrapped with bands of smooth muscle that function in sphincter-like fashion to determine when and if blood flows into the capillary beds they feed or is blocked from flowing into those capillary beds and is re-directed elsewhere in the body; because of their muscular nature, these vessels are also considered as 'resistance' vessels in the vascular network
vessels that, because of their thinner, less muscular walls and wide lumens are very compliant (meaning they can easily expand and accommodate large volumes of blood with little change in intra-vessel pressure), thus are considered the 'compliance' vessels in the vascular network
1.
large ateries
2.
smaller arteries
3.
arterioles
4.
capillaries
5.
venules and veins
Match the statements/descriptors listed in the left-hand column with the appropriate type of blood vessels listed in the right-hand column.
major vessels that carry blood immediately away from the heart; have wide outside diameters but relatively small inside diameters (lumens); walls are thick, with large quantities of elastin so can easily 'stretch' when large volumes of blood are forced, under high pressure, into these vessels as the heart's ventricles contract
Explanation / Answer
1.Large ateries- major vessels that carry blood immediately away from the heart; have wide outside diameters but relatively small inside diameters (lumens); walls are thick, with large quantities of elastin so can easily 'stretch' when large volumes of blood are forced, under high pressure, into these vessels as the heart's ventricles contract.
2. Smaller Arteries- vessels that also transport blood away from the heart, but compared to the larger vessels from which they branch have thinner, more muscular walls largely due to the lesser amounts of elastin they contain; because of their more muscular nature, they are considered as 'resistance' vessels in the vascular network.
3. Arterioles- small diameter vessels that immediately precede, or come just before, the capillary beds they 'feed'; their walls consist of a single layer of endothelial cells wrapped with bands of smooth muscle that function in sphincter-like fashion to determine when and if blood flows into the capillary beds they feed or is blocked from flowing into those capillary beds and is re-directed elsewhere in the body; because of their muscular nature, these vessels are also considered as 'resistance' vessels in the vascular network.
4. Capillaries- vessels considered the 'business end' of the vascular network because they are the sites where actual exchange of gasses, nutrients, and waste products occurs between the blood and tissues and vice versa.
5. venules and veins- vessels that, because of their thinner, less muscular walls and wide lumens are very compliant (meaning they can easily expand and accommodate large volumes of blood with little change in intra-vessel pressure), thus are considered the 'compliance' vessels in the vascular network.