· The term homeostasis refers to the maintenance of a constant internal environment within the body through negative feedback, despite fluctuations in the external environment.
· The set point for body temperature is 37.4.
· Negative feedback is when the body senses an internal change and then activates mechanisms which reverse this change. It involves a receptor (or sensor), and effector and a means of communicating between them.
· Negative feedback control:
o Conditions in the body change from a set point
o The change is detected by a receptor
o Corrective mechanisms activated by an effector
o Conditions return to the set point
o Corrective mechanisms switch off
· The hypothalamus has the ability to control every endocrine gland responsible of altering blood pressure, body temperature, metabolism and adrenaline levels.
· The involuntary/ autonomic nervous system (ANS):
o Responsible for homeostasis
o Much of the activities are controlled by the hypothalamus.
o There are two branches of the autonomic nervous system; sympathetic and…