Question | Answer |
Homeostasis | maintaining (keeping) a stable internal environment -organisms must have homeostasis to survive |
stimulus | an environmental change that affects the activity of an organism - may come from an organism or external environment |
Response | The way an organism reacts to stimuli |
Why is homeostasis important to an organism? | Because cells and organs of lLiving organisms can not continue to live Unless Homeostasis is maintained |
Give an example of a stimulus. What is its response? | Stimulus is you smell or see food. The response would be you get hungry so you eat |
How are organisms organized from smallest and simplest to largest and most complex? | Cells->. Tissues-> Organs -> organ systems |
What is Negative feedback. | Your systems need to slow down or completely stop a process that is happening. REDUCES the original effect of a stimulus) |
What is positive feedback? | The action being stimulated more. (ADDS to original stimulus) |
Give example of. Negative feedback | Body temp. Increases and body sweats |
Give an example of positive feedback | Body temp. Decreases, body shivers and temp increases |
Name the organ systems in your body | Digestive - Cardiovascular -urinary - nervous and endocrine |
What is the function of the digestive system ? | Makes sure the body has nutrient molecules |
WhAt is the function of the cardiovascular system? | Transports the nutrient molecules through the body |
What is the function of the urinary system. | Rids the system of waste |
What is the function of the nervous system? | Makes sure all the other systems are doing what they are supposed to do |
Hypothalmus | part of the brain that controls body temp. |
what is normal body temp? | 37 degrees C |
what is an organ system? | a group of organs that work together |