This mechanism does not prevent variation, it only helps keep the variation near the set point. Many negative-feedback mechanisms have three components; a receptor, a control center and an effector. A receptor monitors the significance of the variable. The control center is where the set point is established. The effector has the ability to change the variable.

The set point varies from person to person. The body usually does not maintain its set point exactly but instead it fluctuates and declines around this point bringing forth a normal range of values. When the body undergoes a physical stressor; such as exercise, a secondary set point is established.

The Schneider test measures the recovery rate, the rate at which the body moves back to the original set point once a stressor

Once the data was collected the score was determined. (Refer to Handout). The score averages were then taken within the class. The male average was 12.6. The female average was 15.9.

120 sec.- 56

The receptors in this negative feedback mechanism are located in the aortic arch and carotid arteries, which are near the heart. As blood pressure increases, the receptors send a message to the control center, which in this case, is the medulla. The control center cause the heart, or effector, to decrease the heart rate to decrease, thus maintaining homeostasis. This process are known as the baroreceptor reflex mechanisms.

Exercise: 15 sec.- 68 Score: 18

Exercise: 15 sec.- 80 Score: 15

Some common words found in the essay are:
Refer Handout, , Angiotensin II, Colby Recline, Jenny Recline, Erin Recline, blood pressure, World War, Method Refer, negative feedback, control center, sec- 80, 120 sec-, 90 sec-, 15 sec-, angiotensin ii, 60 sec-, exercise 15, exercise 15 sec-, negative feedback mechanism, maintenance blood pressure, response reduced blood, reduced blood pressure,
Approximate Word count = 891
Approximate Pages = 4 (250 words per page double spaced)