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MMS cardio and resp
Mead Middle cardiovascular and respiratory system
| Question | Answer |
|---|---|
| cardiac muscles | muscles in the heart that work to pump blood to the body |
| arteries | blood vessels that carry blood AWAY from the heart |
| veins | blood vessels that carry blood TOWARDS the heart |
| capillaries | the tiniest blood vessels in the body with walls so thin gases (like oxygen and carbon dioxide) and other fluids (like nutrients and water) can pass right through |
| valves | keep blood flowing 1 direction in the heart - there are 4 in your heart |
| atrium | the 1st chamber blood enters in your heart from either your body or lungs (there are 2 atria in your heart, the right and left) |
| ventricle | the 2nd chamber blood travels to in your heart (it comes from the atrium to the ventricles) There are 2 ventricles in your heart, the right and the left. |
| Blood vessels | tubes that carry blood around your body |
| oxygen | A gas that your body needs to turn nutrients in to energy. Your blood carries oxygen from your lungs to your entire body. |
| carbon dioxide | A gas that is made when cells turn nutrients and oxygen into energy. Your blood carries carbon dioxide from all your body parts to your lungs to be exhaled. |
| respiratory system | The organs that work together to bring oxygen in to your body and get rid of carbon dioxide. |
| lungs | The organ where oxygen and carbon dioxide are exchanged. (Oxygen goes in to your blood and carbon dioxide leaves your blood and is exhaled) |
| diaphragm | The muscle below your lungs that helps your lungs fill with air (inhale) and empty of air (exhale) |
| blood | Carries oxygen and nutrients to all cells. Brings carbon dioxide waste to the lungs |
| cellular respiration | takes place in the mitochondria, Uses oxygen and nutrients to make energy (ATP), creates carbon dioxide waste |
| alveoli | tiny air sacs in lungs where oxygen comes from the lungs and enters blood. Also where carbon dioxide leaves the blood and gets exhaled |
| trachea | the windpipe, connects the nose and mouth to the lungs |
| nose and mouth | bring in oxygen and get rid of carbon dioxide |