Physio Lecture 1 Study Guide

Ch 1.- Homeostasis, Scientific Method. Ch 2.- Basic Chemistry. Ch. 3- Organic Chemistry

what are the components of a Feedback loop

receptor, integrating center, the effector

Steps of scientific method

1. obeservation

2. Hypothesis

3. experiment

dedcutive method

theoretical science- uses logic to get a conclusion

inductive method

experimental science- perform experiments to gather data

Negative Feedback loop

primary mechanism used to maintain homeostasis- senses change and body activates a self-regulating mechanism to reverse it

Positive Feedback Loop

self-amplifying cycle that changes the set point of homeostasis to allow a greater change in the same direction and produces a rapid change

what are effectors usually?

muscles

what is a blind study

used so the subjects don’t know if they are receiving placebo or drug to maintain accurate test results

what is a hypothesis

a question that is the baseline for an experiment and is able to be tested to either refute or agree with.

Control Group

a standard baseline that does not receive treatment to see the real measure

what is homeostasis

homeostasis is a process to maintain constancy of the internal environment (ex. temperature) controlled by negative feedback system

change in stimulus is detected by…

receptors

response of the change is carried out by…

the effector

type of response is determined by

integrating center/ control center

where is the integrator usually located

nervous system (brain and spine) in the hypothalamus portion of the brain

the receptor communicates with the

integrating control which in return controls the effector