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Your skin, skeleton, and joints: Your skin: wet and dry -- How fast do fingernails grow? -- Locating parts of your skeleton -- Joints: where bones meet -- Muscles: the prime movers: Your muscles -- Muscle pairs -- Muscle fatigue -- Your opposable thumb -- Your always active muscles -- Muscles and body levers -- Seeing what's under the skin -- Inside bones -- Circulation and respiration: Listening to a heart -- Finding a pulse -- Effect of body position and exercise on heart rate -- Effect of body position and exercise on breathing rate -- Effect of body position and exercise on blood pressure -- Returning to the heart -- How you breathe -- Model of your lungs -- How much air do you breathe? -- Air, lung air, and carbon dioxide -- Digestive and excretory systems: Look at teeth and teeth in action -- Can you swallow while upside down? -- Listening to a swallow -- Digesting starch -- How much urine do you excrete? -- Nervous and endocrine systems: Testing reflex actions -- Measuring reaction time -- Your biased brain -- Hypothalamus and body temperature. |
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