Name: Heart
Released: 1996-02-14

Bill Nye the Science Guy

S4 · E16 — Heart

S4:E16 · Heart

Bill Nye the Science Guy

TV Series

199326m7.4

ComedyDocumentaryKids

Now playing

Heart

Season 4 · Episode 16 · Feb 14, 1996

Your heart pumps your blood around your body, all hours, every day of the week, to keep you alive. Your heart is about the size of your fist, and it’s made of special muscle called “cardiac” (KAR-dee-ak) muscle. Cardiac muscle lets your heart keep the beat, it can also speed up or slow down, depending on what your body needs. Your heart works like an automatic pump – it squeezes, or contracts, and un-squeezes, or relaxes, to push blood through the four different sections of your heart. Valves, special one-way openings, are like little doors between the sections – making sure your blood moves in only one direction through your heart, to your lungs, back to your heart, and then around your body again.

More details

Bill Nye the Science Guy

TV Series

199326m7.4

ComedyDocumentaryKids

Now playing

Heart

Season 4 · Episode 16 · Feb 14, 1996

More details