Cardiovascular Dynamics

What would happen if you increased the driving pressure? Use the simulation to arrive at an answer. The concentration remained the same but the filtrate rate increased.

mediators, causing increasing capillary permeability and widespread fluid shift into the interstitial space, which was no longer functioning to maintain vascular volume (known as third spacing) in addition, causing further vasodilation to occur.

Explain the effect that increasing the Na+ Cl- concentration has on osmotic pressure and why it has this effect. How well did the results compare with your prediction?

1. Explain the effect that increasing the Na+ Cl- concentration had on osmotic pressure and why it has this effect. How well did the results compare with your prediction?

The dependent variable was the percent increase in mass of the dialysis tubing. We can use this to compare how osmosis increases or decreases as solute concentration increases.

When the resistance of a fluid increases, the flow will decrease. One example of this is gravy and milk. Gravy has a greater resistance than milk and will take longer to flow out of a pitcher. The same can be said about respiratory therapy equipment. An increase in viscosity will decrease the flow. When

axis at the terminal portion of the curve. The spirometry does show only a 61%

34. Why are arteries sometimes called the resistance vessels? More pressure is required to push blood through a constricted vessel than through a dilated one. The force opposing blood flow is called resistance (R) , and arterioles are therefore called resistance vessels

1. What two parameters are responsible for creating the movement (filtration and reabsorption) of fluid across the capillary wall?

Subpoint- The increase in the blood circulation will lead to an increase in the circulation that surrounds the organs.

3) What do the rate of change values you just calculated represent? Why are some positive and some negative?

The heart, blood and blood vessels make up the basis of the cardiovascular system also known as the circulatory system. The average human body contains approximately 5 litres of blood which is carried around the body via a network of blood vessels split into three types; arteries, veins and capillaries. The arteries are the largest of the three vessels and carry blood away from the heart. Veins carry blood to the heart and are smaller than arteries, then finally the smallest vessels known as capillaries distribute the oxygen rich blood to organs whilst simultaneously picking up the waste carbon dioxide and water from the organs to transport back to the heart where it can be pumped into the lungs to be exhaled.

of the water. The osmolality of the water leaving the tube of Henle is lower than the

Blood is one of the most vital components of the human body. The blood carries many functions such as to supply oxygen to the bodies tissues, remove metabolic waste products, regulate our core temperature as well as fighting infection and foreign bodies (Glover, 1997). The cardiovascular system is composed of the heart and its vessels. The heart is an involuntary muscle which receives blood to the atrias, which is then pumped via the ventricles. The vessels are composed of three main types. Arteries, veins and capillaries; all which transport blood throughout the entirety of the body. The constant action of both the vessels and heart ensure that the body receives a continuous supply of blood, keeping us within our homeostatic limits.

2.   How could you adjust the afferent or efferent radius to compensate for the effect of the reduced pressure on glomerular filtration rate and urine volume?  Use the simulation to determine your answer.