quiz 1 physio

Which system(s) do NOT exchange material with the internal and external environments?

Circulatory system

Today is your first exam, and as a result, your Blood Pressure is way above the normal range (normal BP = 110/70, your blood pressure = 130/90). Baroreceptors (they detect changes in blood pressure) located in your Aortic Arch and Carotid Sinuses detect the change in your BP and send this information to the Medulla located in your brain. The Medulla will compare the information it just received with the set point stored in it and realize that your BP has increased. The Medulla will cause your arteries to dilate, your heart rate to decrease, and finally, your urine production to increase. This is an example of ____.

Negative feedback

Today is your first exam, and as a result, your Blood Pressure is way above the normal range (normal BP = 110/70, your blood pressure = 130/90). Baroreceptors (they detect changes in blood pressure) located in your Aortic Arch and Carotid Sinuses detect the change in your BP and send this information to the Medulla located in your brain. The Medulla will compare the information it just received with the set point stored in it and realize that your BP has increased. The Medulla will cause your arteries to dilate, your heart rate to decrease, and finally, your urine production to increase. Baroreceptors would be classified as which of the following?

Sensor

Calcium is needed for blood clotting since it is a cofactor. What is the function of calcium?

Activates proteins