| A | B |
|---|
| Homeostasis is... | the maintaining of a stable internal environment in the body |
| We need homeostasis in our body because... | without it, we'd die! |
| When your body gets too hot... | you sweat to cool off |
| When your body gets too cold... | you shiver to warm up |
| When you have too much water in your body... | you pee to get rid of it |
| Negative Feedback loops in your body | work to remove something or stop something from happening |
| Positive Feedback loops in your body... | work to keep something going or add to it |
| Smallest level of organization in your body | cells |
| Examples of cells | egg, sperm, red blood cells |
| Many cells working together to perform a common function | tissue |
| Four types of tissue | Connective, Epithelial, Muscle, Nervous |
| Many tissues working together in your body` | Organ |
| Examples of organs | brain, stomach, muscles, bones, lungs, heart |
| Many organs working together to perform a common function | organ system |
| Organ system that breaks down food | Digestive system |
| Organ System that moves blood around | Circulatory system |
| Organ System that brings in oxygen and gets rid of CO2 | Respiratory system |
| Organ System that moves you | Muscular System |
| Organ System that supports and protects your organs | Skeletal System |
| Organ System that removes wastes | Excretory System |
| Organ System that sends and receives electrical messages | Nervous System |
| Organ System that uses chemical messages called hormones to control body functions | Endocrine System |
| Organ System that collects leaked fluid from cells and returns it to the blood | Lymphatic System |
| Organ System that protects you with skin hair and nails | Integumentary System |
| Type of tissue that contracts and relax to produce movement | muscle tissue |
| Type of tissue that sends and receives electrical messages | nervous tissue |
| Type of tissue that covers & protects underlying tissue | epithelial tissue |
| Type of tissue that joins, supports, cushions, insulates organs | connective tissue |
