Bio 202 Essay

Blood vessel length, when increased causes more friction or resistance thus making it more difficult for blood to flow through the vessel. In summation, increasing blood vessel length inversely effects flow rate but decreasing flow rate. My prediction was that an increase in blood vessel length would inversely effect blood flow. As evidenced in this experiment, with the increase of the blood vessel length, there was a decrease in blood flow.

Deacreased vascular resistance and increased arterial pressure causes an increase in blood flow. This is important to supply organs with oxygen. 4. Restate your predictions that were correct and give data from your experiment that support them. Restate your predictions that were not correct and correct them with supporting data from your experiment. MAP would increase due to increase in activity, SVR would decrease due to decrease in resistance, CO would increase due to more force of blood being expelled.

Biographical: G.B., 20, Male, Caucasian, DOB: 01/23/1993, Student, Dr. Wang, Orientated to person, time and place, reliable source of information. No deficits in mental ability.

of atria and ventricle. Impulses not being transmitted from atria to the ventricle; no whole number relationship between atrial and ventricular contractions was demonstrated.

Both the arterial system and venule system play a key role within the circulatory system, but this is possible because of their differences. An artery will pump blood away from the heart at high pressure, due to its think walls and small/round lumen. Arteries also possess numerous amount of that allows it to stretch. A vein will pump blood away from the heart at low pressure, while acting against gravity, due to its thin walls, multiple valves, and large size and irregular shaped lumen. Arteries contains vasa vasorum and nervi vasorum on its tunica externa, while the veins possess them on both the tunica externa and tunica media.

2. What happened to stroke volume? Peripheral resistance? Blood volume? Explain your answers. The blood volume remained the same without any changes. The stroke volume decreased from 77.20 to 59.48. The peripheral resistance sharply decreased from 1182.00 to 626.31.

Most volume loads tend to be attributed to physiological, eccentric cardiac hypertrophy. (4) As an athlete exercises, more oxygen is consumed causing the need for more deoxygenated blood to be pumped to the lungs via the heart. Due to this increased venous blood flow into the heart, eccentric hypertrophy occurs in which the heart’s wall thicken and cavity size enlarge proportionally.

Walls are only one cell layer thick (allowing oxygen and substances to pass through them into surrounding tissues)

Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues. Blood is pumped from the ventricles into large elastic arteries that branch repeatedly into smaller and smaller arteries until the branching results in microscopic arteries called arterioles. The arterioles play a key role in regulating blood flow into the tissue capillaries. About 10 percent of the total blood volume is in the systemic arterial system at any given time.

arteries: They carry blood away from the heart and they are under high pressure from

6) When the left ventricle is full it contracts, and blood is pushed out into the

There is increased blood flow, and blood volume returning to the heart.” - L. Robins 2015

The increased pressure causes the semilunar valves to open and blood to flow away from the heart

During the cardiac cycle, blood is circulated through pulmonary and systematic circuits of the body. There are two

Circulatory - An acute response in relation to the circulatory system would be an increase in stoke volume. An increased stroke volume allows oxygen demand by the muscles to be met by oxygen supplier through bigger heart contractions.