BIO 192 NAU Final

BIO 192 NAU Final Homeostasis - maintenance of an internal state What 2 variables regulate homeostasis? - glucose levels, blood pressure What is Type 1 diabetes? - the body/beta cells does not PRODUCE insulin What is Type 2 diabetes? - the body does not RESPOND to insulin, a cure is exercise What are the 3 parts of a Negative Feedback Loop? - sensor, integrator, effector What is threshold - the DIFFERENCE where the integrator decides the variation between the action value and the set point is too big What is error signal - the DEVIATION between the action value and the set point What are things that take us out of homeostasis? - exercise, injury, disease, etc. what changes set point - pregnancy, endurance exercise what is steady-state - constant over a period of time even as you exercise why does the body use the negative feedback loop - to get back to homeostasis when/after we work out/get stressed endocrine system consists of what - hormones and glands, transported through the blood stream nervous system does what - transports messages through nerves what is bioenergetics? - converting food into energy what are the types of energy - kinetic, potential, heat, work