Compare and contrast the structure and location of arteries

Compare and contrast the structure and location of arteries, arterioles, capillaries, and veins. How do these differences contribute to the differences in function of each? Baroreceptors have stretch-sensitive ion channels in their cell membrane Increased pressure on the membrane opens the channels and allows ion flow that initiates action potentials. What kind of ion probably flows through these channels and in which direction? Explain Match the change with the cardiovascular event described increased decreased unchanged stopped The blood pressure in a vessel is 10 units at point A and 10 units at point B. Flow between those points is The blood pressure in a vessel is 20 units at point A and 10 units at point B. One minute later, the pressure is 15 units at point A and five units at point B. Flow between those points is Joey develops a medical condition that decreases his blood viscosity. Assuming no other change (e.g., no compensatory reflex what happens to his blood pressure? When a blood vessel dilates, resistance through that vessel is You suck milk through a 6-inch straw and through a 10-inch straw; the diameters are identical. Resistance is in the 10-inch straw compared to the 6-inch straw.

Solution

The arteries, arterioles , capillaries,and veins constitute the net work of blood vessels which help in the circulation of the blood.The structure and function of these structures are as follows;

Arteries :Are the blood vessels that carry oxygenated blood from the heart to various parts of the body.They are three layered, the thicker inner tunica interna , and a thinner tunica externa.

They are rounded and have contractability and are responsive to the ANS.

Areterioles : Carry blood from the main artery into the capillarieries.They are smaller branches .They have reduced tunic size,form an anastamosing network for collateral circulation.They are relatively responsive to ANS.

Capillaries : They are the blood vessels though which the blood takes place between the cells and the blood vessels by diffusion and form a network to increase the area of diffusion . They Are one celled in thickness and are made up of only a single layer the tunica externa.They are found near each and every cell of the body.

Veins:

are blood vessels that carry deoxygenated blood from various organs back to the heart.They have three layered but when compared to the arteries he tunica externa is thicker..They have reduced bllood pressure and have valves that prevent the back ward flow of the blood and serve as blood reservoirs.vasoconstriction is brought about by sympathetic stimulationand diver blood to the skeletal muscle to prevent the pooling of the blood.

Venules :

Are return vessels that take the deoxygenated blood back to the heart and have two layers the tunica externa and tunica interna.the pressure of the blood is comparitvely low.