Explore BrainMass

Describe the intergrated physiological mechanisms underlying changes in blood flow

I need to write an essay on the above using the the following figures and desperatrely need help to do it.
I need about 400 words
blood flow measurements (ml min-1) through different organs.

rest moderate aerobic intense anaerobic
exercise exercise

heart 204 607 1008

brain 754 759 756

muscle 1020 10778 21420

skin 306 1518 756

Solution Preview

During rest the heart needs to pump a basal amount of blood through the body in order to sustain basic physiological functions. During moderate and intense physical exercise the heart rate increases linearly according to the muscle mass being utilized in order to facilitate the oxygen demand as well remove waste i.e. carbon dioxide.

The brain always has a constant supply of blood flow, as it does not require additional oxygen during exercise. However there is a minimum amount of oxygen constantly required in the brain, if these levels become decreased levels of consciousness (fainting) will arise. The reason why blood demand to the brain isn't altered.

The muscles are not at full capacity when exercise is started, therefore there is a log rhythmic relationship between blood flow to the muscles and exercise until the capacity is met. After that a linear relationship is seen which is proportional to workload.
Blood flow ...