NAS 2 Challenge Verified Solution

NAS 2 Challenge Exam Verified Solutions Answers What is the purpose of the Scientific Method? Test the hypothesis What are the steps of the Scientific Method 1. problem 2. hypothesis 3. procedure ze usion Independent Variable The experimental factor that is manipulated; the variable whose effect is being studied. Dependent Variable The outcome factor; the variable that may change in response to manipulations of the independent variable. Control Groups groups whose members do not obtain the treatment, while other conditions are held constant Experimental Groups treatment groups; the participants in a study that receive the intervention Define Anatomy and Physiology Anatomy: the study of the body's parts or the body's structure Physiology: the sturdy of how the body parts work or how the body functions Structure determines function; function determines structure - they're inseparable. The six levels of organization chemical, cellular, tissue, organ, organ system, organism Requirements of life water, food, oxygen, heat, pressure Survival needs nutrients, oxygen, water, body temperature, atmospheric pressure Homeostasis A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level Basic mechanism for homeostasis receptor, control center, effector Positive feedback loop feedback loop that causes a system to change further in the same direction Negative feedback loop A feedback loop that causes a system to change in the opposite direction from which it is moving Anatomical Position erect, feet forward, arms at side with palms facing forward, head facing forward Dorsal toward the back Lateral away from the midline Superior above Inferior below Anterior toward the front Posterior toward the back