I need Help with PhysioEx 9.0 Exercise 9 Review Sheet 1-4 Please:)

Also i need help with..

5. Describe the effect of the increasing afferent arteriole radius on glomerular capillary pressure and filtration rate.
6. Describe the effect of the decreasing efferent arteriole radius on glomerular capillary pressure and filter ration rate.

7. Describe the effect of increasing the efferent radius on glomerular capillary pressure and filtration rate?

////Activity 2///

1. as blood pressure increased, what happened to the glomerular capillary pressure and the glomerular filtration rate? how well did the results compare with your prediction?

2.Compare the urine volume in you baseline data with the urine volume as you increased the blood pressure. How did the urine volume change?
3.How could the change in urine volume with the increase in blood pressure be viewed as being beneficial  to the body?
4. When the one-way valve between the collecting duct and the urinary bladder was closed, what happened to the filtration pressure in bowman's capsule( this is not directly measured in this experiment) and the glomerular filtration rate? how well did the results compare with your prediction?

5. How did increasing the blood pressure alter the results when the valve closed?

1. Proximal convoluted tubule, 2. loop of Henle, 3. Distal convoluted tubule

One question per thread.

which arteriole radius adjustment was more effective at compensating for the effect of low blood pressure on the glomerular filtration rate? Explain why you think this difference occurs

#7
The 'efferent' arteriole leaves the renal corpuscle. It is easy to remember which direction efferent and afferent things are going by thinking e=exit and a=arrive. If you constrict the efferent arteriole, you actually inhibit blood from leaving the glomerulus, thus increasing the outward hydrostatic pressure pushing fluid into Bowman's capsule and increasing filtration. If you dilate the efferent arteriole, then you reduce pressure in the glomerular capillaries and reduce filtration.

can you help me with this one?
Which arteriole radius adjustment was more effective at compensating for the effect of low blood pressure on the glomerular filtration rate? Explain why you think this difference occurs