| A | B |
|---|
| organism | a living thing |
| cell | basic unit of life |
| nutrients | substances that provide energy and materials for health |
| stimulus | anything that causes a response |
| response | a reaction to a stimulus |
| adaptations | a characteristic that allows an organism to survive |
| structures | AKA body parts |
| organ | group of tissues that work together to preform a function |
| organ system | organs that work together for perform a task or function |
| circulatory | system to transport oxygen and food; defender of the body |
| respiratory | system to transport oxygen and carbon dioxide in and out of the blood |
| digestive | system to break down food pieces into smaller ones |
| nervous | system to coordinate and control actions |
| excretory | system to remove wastes from the blood |
| skeletal | system to provide support and protection |
| muscular | system to move bones |
| integumentary | protects body and senses outside forces |
| capillaries | tiny blood vessels; connect arteries and veins |
| microscope | device used to magnify; extends our sense of sight |
| tissues | group of similar cells working together |
| cell membrane | gateway; controls movement of materials in and out |
| nucleus | command centre; directs life functions |
| mitochondria | powerhouse; converts energy into useable form |
| vacuoles | storage rooms; nutrients, water, etc are stored |
| cytoplasm | kitchen; contains nutrients |
| cell wall | frame; found in plant cells to give support |
| chloroplasts | solar converters; found in plant cells for photosynthesis |
| multicellular | made up of 2 or more cells |
| unicellular | single celled organism |
| diffusion | moving from an area of high concentration to an area of low concentratin |
| selectively permeable | membrane that allows some substances through but not others |
| osmosis | diffusion of water |
| mechanical digestion | physical breakdown of food |
| chemical digestion | enzymes to break down food |
| peristalsis | contraction of muscle tissues of esohagus |
| gastric juice | acid, water, mucus, and enzymes |
| villi | small projections in the intestine |
| diaphragm | muscles to help you breath |
| bronchi | passageways in lungs |
| alveoli | tiny air filed sacs in the lungs |
| atria | top 2 chambers of the heart |
| ventricles | bottom 2 chambers of the heart |
| arteries | carry blood from heart to body |
| veins | carry blood from body to heart |
| central | nervous system composed of brain and spinal cord |
| peripheral | nervous system composed on the head and spinalerves |
| neuron | specialized cells for sending and receiving messages |
| reflex | automatic response to stimuli |
| sensory neurons | carry info from body to central nervous system |
| motor neurons | carry info from the central nervous system to the body |
