Give me some skin -- Hair today, gone tomorrow -- Hard as nails -- The eyes have it -- Getting nosy -- Play it by ear -- Plusses about sinuses -- Open wide : your mouth and throat -- Pipe down : your larynx and trachea -- Down the hatch : your esophagus -- Can you stomach it? -- Long story short : your small intestine (and its neighbors) -- The gut stops here : your large intestine -- The bone zone -- Muscle madness -- One good pump deserves another -- In with the good air, out with the bad -- In the red : the basics of blood -- The pee, the whole pee, and nothing but the pee -- The Defense Department -- A nod to nodes -- Who's the boss? -- That makes senses -- The land of the glands -- Cells speak louder than words -- Your life as a fetus -- Knowing about growing -- The good, the bad, and the awkward : puberty -- What's cooking? -- A word about sleep -- Exercise and you -- Surviving a doctor visit.