Adrop in blood pressure results in constriction of the blood vessels. blood pressure functions as the in a negative feedback system. see section 4.8 (page 94) a drop in blood pressure results in constriction of the blood vessels. blood pressure functions as the in a negative feedback system. see section 4.8 (page 94) control center sensor controlled variable effector

The answer is Controlled variable

Constriction of blood vessel will reduce its diameter and increase the resistance. this will lead to higher blood pressure. The purpose of blood vessel constriction is to control the blood pressure at a certain range to make sure the blood could be distributed. Blood pressure would be the controlled variable of this mechanism.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation: