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Heart and Circulation
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0:01
Dr. Pepper, Dr. Pepper... HEAR THAT "LUB DUB"? THAT'S THE SOUND OF MY HEART PUMPING BLOOD TO MY WHOLE BODY. IT'S GOING A LITTLE FASTER THAN NORMAL RIGHT NOW, THOUGH. I'M KIND OF IN A HURRY. AND NOW, LADIES AND GENTLEMEN... SOMETHING THAT'S NEAR AND DEAR TO ALL OUR HEARTS... I GIVE YOU... VOILA!
0:25
♪ BILL NYE, THE SCIENCE GUY ♪ ♪ BILL NYE, THE SCIENCE GUY ♪ ♪ BILL, BILL, BILL, BILL, BILL, BILL ♪ ♪ BILL NYE, THE SCIENCE GUY ♪ Woman: <i> SCIENCE RULES.</i> ♪ BILL NYE, THE SCIENCE GUY ♪ <i>INERTIA IS A PROPERTY OF MATTER.</i> ♪ BILL, BILL, BILL, BILL ♪ ♪ BILL NYE, THE SCIENCE GUY ♪ ♪ BILL, BILL, BILL, BILL ♪ <i> "T" MINUS SEVEN SECONDS.</i> ♪ BILL NYE, THE SCIENCE GUY. ♪
0:55
Announcer: <i> BLOOD AND CIRCULATION</i> <i> BROUGHT TO YOUR BRAINS</i> <i> BY ARTERIES--</i> <i> TAKEN AWAY BY VEINS.</i> Man #1: GOOD NIGHT, BILL. Man #2: GOOD NIGHT, SCIENCE GUY. GOOD NIGHT, YOU GUYS. I'M GOING TO WORK SOME MORE ON BLOOD AND CIRCULATION.
1:12
(<i> yawning:</i> ) IT IS REALLY INTERESTING. FASCINATING TOPIC-- REALLY COOL. I THINK I'M GOING TO REST MY EYES FOR A MINUTE.
1:33
Bill: <i> WHERE AM I?</i> <i> OH. IT'S THE, UH,</i> <i> DOOR TO THE LAB.</i> <i> WHAT'S GOING ON?</i> <i> OH, HI.</i> <i> WHOA!</i> <i> IT'S A BLOODSTREAM.</i> <i> I'M IN A VEIN OR SOMETHING.</i> <i> THIS IS WEIRD.</i> <i> WHOA.</i> <i> WHAT'S HE DOING HERE?</i>
2:01
<i> I CAN HEAR THE HEART.</i> <i> IT'S BEATING.</i> <i> THAT'S A WHITE BLOOD CELL.</i> <i> THAT'S A GERM! GET HIM!</i> <i> HUH.</i> <i> WEIRD.</i> <i> WHOA!</i> <i> I'M OKAY. I'M OKAY.</i> <i> I'M IN THE HEART.</i> <i> THOSE ARE RED BLOOD CELLS.</i> <i> YOUR HEART BEATS</i> <i> YOUR WHOLE LIFE, YOU KNOW.</i>
2:21
<i> LUB, DUB.</i> <i> LUB, DUB...</i> Radio D.J.: Hey, hey, everybody, it's 7:08 in the city! RED BLOOD CELLS, WHITE BLOOD CELLS... ...Time to get out of your chair and get your heart pumping! I GOT TO GET TO WORK! (<i> panting</i> )
2:40
(<i> heart beating rapidly</i> ) (<i> panting:</i> ) HI. HI. YOUR HEART BEATS AND IT PUMPS BLOOD ALL THROUGH YOUR BODY. Woman: CUT. BILL, CALM DOWN. I HAD THE WEIRDEST DREAM. YOUR HEART... CUT. DEEP BREATH. WILL YOU RELAX? LET'S DO THIS AGAIN. HI. TODAY WE'RE GOING...
2:59
CUT. YOUR HEART IS BEATING TOO FAST. NOW, JUST RELAX. OKAY. AGAIN.
3:06
CUT. BILL, JUST RELAX, WILL YOU? YOUR HEART BEATS AND THAT PUMPS BLOOD THROUGH YOUR WHOLE BODY. CUT. I GUESS I'M... WHERE DID WE GET THIS GUY? PEOPLE, WORK WITH ME HERE. YOUR HEART PUMPS YOUR BLOOD THROUGH YOUR WHOLE BODY
3:24
ALL DAY, ALL THE TIME, YOUR WHOLE LIFE. YOUR HEART'S ABOUT AS BIG AS YOUR FIST. (<i> beating</i> ) Bill: <i> LUB, DUB... LUB, DUB.</i> <i> THE "LUB," THAT'S THE BIG PUSH</i> <i> AND THE "DUB,"</i> <i> THAT'S THE RELOADING PUSH.</i> THE HEART IN A GUY MY SIZE PUMPS ENOUGH BLOOD EVERY DAY TO FILL OVER 30 OIL DRUMS.
3:51
ISN'T THAT AMAZING? THE BLOOD VESSELS NEAR YOUR HEART ARE BIG, LIKE HIGHWAYS. (<i> horns honking</i> ) BLOOD GOING AWAY FROM YOUR HEART ENDS UP IN SMALLER BLOOD VESSELS, LIKE STREETS. (<i> multiple horns honking</i> ) EVERY CELL IN YOUR BODY SITS NEXT TO A VERY SMALL BLOOD VESSEL CALLED A CAPILLARY. A CAPILLARY IS LIKE A DRIVEWAY.
4:18
(<i> brakes squealing,</i> <i> car crashing</i> )
4:23
CELLS ARE LIKE HOUSES. (<i> doorbell rings</i> ) Man: <i> IS ANYBODY HOME?</i> THE BLOOD BRINGS NUTRIENTS AND OXYGEN TO EVERY CELL. EVERY CELL PUTS WASTE PRODUCTS, LIKE CARBON DIOXIDE BACK INTO THE BLOODSTREAM. YOUR BLOOD IS PUMPED ALL OVER YOUR BODY ALL DAY, ALL THE TIME-- YOUR WHOLE LIFE. <i> THAT</i> IS AMAZING.
4:46
SO, DID WE GET IT? YO, SCIENCE GUY, YOU THROUGH WITH MY SHIRT YET? HERE YOU ARE, MR. SINBAD. SO THE LONG COTTON FIBERS ARE MADE PLIABLE BY APPLYING ENERGY TO THE CREASES, HUH? KIND OF AN OLD TRICK. WELL, YOU PUMPED UP FOR THE SHOW? YEAH, JUST LIKE MY HEART PUMPING THAT BLOOD BEFORE A BIG MATH TEST.
5:10
SHALL WE REHEARSE? Both: LUB A DUB-DUB, THANKS FOR THE BLOOD. YAY, HEART! (<i> laughing</i> ) WHY DON'T YOU PUMP THESE PANTS AND THIS SHIRT? SURE, MR. SINBAD. ALSO, IF YOU COULD GET SOME SPOTS OFF THE CARPET I'D LIKE TO TALK ABOUT THAT. LUB, DUB. YEAH. LUB, DUB.
5:32
SODA WATER, IT'S GOT CARBON DIOXIDE WHICH WILL...
5:37
DID YOU EVER WANT TO SEE YOUR BLOOD GOING THROUGH YOUR VEINS? WELL, YOU CAN'T SEE THE BLOOD, BUT YOU CAN SEE A PULSE. TAKE A STRAW AND SCISSORS MAKE A SLIT AND STICK THE STRAW INTO A BOTTLE CAP. PUT YOUR NEW "PULSE-OMETER" ON A VEIN. FIND A BIG VEIN, LIKE ON THE INSIDE OF YOUR ELBOW. BECAUSE THAT WORKS BEST. WHEN YOUR HEART PUMPS
6:02
THE STRAW MOVES BACK AND FORTH. WILD! YOU CAN IMPRESS YOUR FRIENDS. SEE IF<i> THEY</i> HAVE A PULSE. Man: <i> HUH?</i> Announcer: <i> HERE IS YOUR HEART.</i> <i> YOUR HEART,</i> <i> BUSILY AT WORK NIGHT AND DAY</i>
6:16
<i> IS THE PUMP THAT KEEPS</i> <i> THE BLOODSTREAM FLOWING</i> <i> THROUGH YOUR BODY.</i> <i> IT'S YOUR BLOOD THAT CARRIES</i> <i> THE FOOD TO YOUR BONES</i> <i> AND MAKES THEM STRONG.</i> SCIENCE. OUR BLOODSTREAM IS LIKE A 100,000 KILOMETER-LONG RIVER. IT WOULD STRETCH 2½ TIMES AROUND THE EARTH. TO STAY ALIVE, OUR BODIES USE BLOOD
6:41
TO CARRY FOOD, OXYGEN, AND WASTE.
6:47
(<i> someone snoring</i> )
6:53
SHH. IT'S NOT ME. IT'S MY FOOT. IT'S ASLEEP. THEN UNCROSS YOUR LEG. YOUR FEET FALL ASLEEP WHEN YOUR BLOOD VESSELS AND NERVES GET SQUEEZED. THIS CAN HAPPEN WHEN YOU SIT CROSS-LEGGED FOR A REALLY LONG TIME. SAME THING CAN HAPPEN TO YOUR ARMS ESPECIALLY WHEN YOU SLEEP FUNNY.
7:18
SO KEEP YOUR FEET ON THE GROUND. (<i> stomach growling</i> ) I CAN'T HELP IT. I'M HUNGRY, TOO. (<i> sighs</i> )
7:32
(<i> heart beating</i> ) HEAR THAT? IT'S THE SOUND OF A HEARTBEAT. PEOPLE SAY IT GOES "LUB DUB." IT'S PROBABLY THE SAME PEOPLE THAT SAY A DOG GOES BOW-WOW. TO ME, A DOG IS MUCH MORE OF A... (<i> imitates dog barking</i> <i> and growling</i> ) Man: <i> DOWN, BILL.</i>
7:52
ANYWAY, THIS IS A PUMP, JUST LIKE YOUR HEART. IT'S THE PLASTIC WATER PUMP OF SCIENCE. NOTICE, THAT AS I PUMP, THIS SMALL VALVE IS OPENING AND CLOSING. WHEN THE PISTON GOES UP, THE VALVE IS CLOSED. WHEN THE PISTON COMES DOWN, THE VALVE IS OPEN. SEE? THIS IS OUR RUBBER-BALLOON- HEART-MODEL PUMP OF SCIENCE. JUST LIKE YOUR OWN HEART
8:20
IT HAS A LEFT SIDE AND A RIGHT SIDE. WHEN THE RIGHT SIDE SQUEEZES, IT SENDS BLOOD TO YOUR LUNGS WHERE IT GETS OXYGEN AND TURNS RED. FROM THERE IT GOES TO THE LEFT SIDE. WHEN THE LEFT SIDE SQUEEZES IT SENDS BLOOD TO ALL THE OTHER PARTS OF YOUR BODY. WHEN IT COMES BACK, IT'S ON THE RIGHT SIDE AGAIN. WHEN ONE SIDE SQUEEZES
8:43
ONE VALVE OPENS AND THE OTHER STAYS CLOSED. OTHERWISE, THE PUMP WON'T WORK. THE LUB DUB? THE LUB, THAT'S THE STRONG PUSH AND THE DUB, THAT'S THE RELOADING PUSH. SO, LUB DUB. BOW-WOW. ARF, ARF... AHEM. THANK YOU FOR JOINING ME ON "CONSIDER THE FOLLOWING." (<i> growling and barking</i> )
9:13
Man: <i> BAD SCIENCE GUY. NO BISCUIT.</i>
9:17
YOU HAVE TWO KINDS OF BLOOD CELLS-- RED AND WHITE BLOOD CELLS. KIND OF LIKE THESE TWO KINDS OF GRAPE JUICE. WE'VE ABOUT 25 TRILLION RED BLOOD CELLS AND FOR EVERY 1,000 RED BLOOD CELLS THERE'S ONLY ABOUT ONE WHITE BLOOD CELL. THAT'S ABOUT 25 BILLION AND TOGETHER THEY KEEP US STRONG AND HEALTHY. SO, HERE'S TO YOUR HEALTH.
9:45
DO YOU WANT SOME? IT'S GOOD, REALLY. MMM. IT IS GOOD. THE GRAPE JUICE IS MORE OF AN ILLUSTRATION THAN ACTUAL BLOOD. IT'S SORT OF A JOKE, AND SO IS CHRIS. IT'S A GAG WE WERE GOING FOR.
10:05
(<i> siren blaring</i> ) ROGER. LET'S ROLL. ♪ BAD BOYS, BAD BOYS ♪ ♪ WHAT YOU GONNA DO? ♪ <i> COPS IN YOUR BLOODSTREAM.</i> WE'RE WHITE BLOOD CELLS. WE'RE LIKE COPS IN THE BLOODSTREAM. Attention all units. Infection at spleen center. ROGER. LET'S ROLL.
10:37
FREEZE, TOXIC PUNK! YOU HAVE THE RIGHT TO REMAIN DORMANT. ANYTHING YOU INFECT CAN AND WILL... THERE AREN'T A LOT US CRUISING AROUND THE ARTERIES AND VEINS BUT YOU CAN MAKE A DIFFERENCE. WHEN YOU STOP AN INFECTION AND PREVENT SOME GERM FROM SPREADING DISEASE IT MAKES YOU FEEL REAL GOOD TO BE A WHITE BLOOD CELL.
11:02
♪ BAD BOYS, BAD BOYS ♪ ♪ WHAT YOU GONNA DO? ♪ ♪ WHAT YOU GONNA DO WHEN THEY... ♪ <i> COPS IN YOUR BLOODSTREAM.</i> ♪ WHAT YOU GONNA DO? ♪ ♪ WHAT YOU GONNA DO WHEN... ♪
11:21
<i> NOW YOU KNOW.</i> YOU HAVE ABOUT FIVE LITERS OF BLOOD IN YOUR BODY. THIS IS HOW MUCH OF IT IS WHITE BLOOD CELLS-- ABOUT FIVE MILLILITERS. THIS IS HOW MUCH YOU GIVE WHEN YOU DONATE BLOOD-- ABOUT HALF A LITER. YOUR HEART PUMPS THE SAME LITERS ALL THROUGH YOUR BODY OVER 100,000 TIMES A DAY! WILD!
11:49
WHAT DO PAPER TOWELS HAVE TO DO WITH YOUR BODY? THEY BOTH HAVE CAPILLARIES. CAPILLARIES ARE VERY SMALL PASSAGEWAYS THAT ALLOW LIQUIDS TO MOVE THROUGH THEM. IF YOU DIP THE TOWEL IN COLORED WATER YOU CAN SEE HOW THE CAPILLARIES IN THE PAPER TOWEL DRAW THE LIQUID UP.
12:08
Girl: CAPILLARIES ARE VESSELS THAT CONNECT ARTERIES TO VEINS. THEY'RE SO SMALL THAT BLOOD CELLS HAVE TO TRAVEL SINGLE FILE THROUGH THEM. RED BLOOD CELLS LOOK MORE LIKE THIS JELLY DOUGHNUT THAN THIS RED WATER BALLOON. BILL, I DON'T THINK THAT'S GOING TO WORK. YOU'RE RIGHT. YOU WANT ONE? SURE. THANK YOU.
12:33
YOU'VE PROBABLY HAD YOUR BLOOD PRESSURE TAKEN BEFORE, RIGHT? WE WRAP A CUFF AROUND OUR ARM AND SQUEEZE OUR ARTERIES AND VEINS. WE SEE HOW MUCH OUR ARTERIES AND VEINS PUSH BACK AND THAT'S OUR BLOOD PRESSURE. WE'LL PUMP THIS UP SO WE GET A SNUG SQUEEZE ON OUR UPPER ARM.
13:03
THE LOUDEST SOUND HE'LL HEAR, THAT'S MY LUB. THAT'S MY BIG SQUEEZE. THE LOWEST SOUND IS THE DUB WHEN THE HEART'S KIND OF RELOADING. LUB AND DUB... I'M LUBBING IT! OKAY, YOU'VE GOT 112 OVER 74. 112 OVER 74. SO 112, THAT'S MY LUB-- MY BIG PUSH. 74, THAT'S MY DUB-- MY RELOADING.
13:28
LUB DUB.
13:41
<i> NOW YOU KNOW!</i>
13:44
Bill: THAT MAKES YOUR VEINS SWELL UP, SEE? THAT'S MY VEIN. THIS IS CLEANING STUFF. IT'S IODINE.
13:56
MAKE YOUR FIST, PLEASE. YES, MA'AM.
14:08
THAT DIDN'T HURT. IT WAS NOTHING. I'M GIVING A HALF-LITER OF BLOOD BUT I CAN AFFORD IT. I'LL BE MAKING PLENTY MORE BLOOD CELLS OVER THE NEXT FEW DAYS. GIVING BLOOD IS NO PROBLEM. YOU'RE TAKING CELLS OUT OF YOUR BODY THAT ARE STILL ALIVE AND GIVING THEM TO SOMEBODY ELSE. IT'S PRETTY COOL.
14:29
WHAT IF YOU CUT THE BOTTOM OF A FOAM CUP OUT... AND PUT THE CUP AGAINST A FRIEND'S CHEST WHERE THE RIBS COME TOGETHER? BE QUIET, OKAY? COOL! I CAN HEAR HER HEARTBEAT. SHE'S STILL ALIVE. LIKE I WAS WORRIED. SHEESH. YOUR HEART PUMPS BLOOD THROUGH THREE TYPES OF BLOOD VESSELS.
14:52
ARTERIES TAKE BLOOD AWAY FROM YOUR HEART VEINS BRING IT BACK, AND CAPILLARIES CONNECT THE TWO.
15:00
THERE YOU ARE. THANK YOU. AFTER YOU GIVE BLOOD, THEY GIVE YOU JUICE AND COOKIES SO THAT YOUR BODY HAS ENOUGH FLUIDS AND SUGAR. ALSO, THEY WON'T LET YOU RIDE A MOTORCYCLE FOR 12 HOURS. I'M GOING TO GET SOME APPLE JUICE.
15:22
WHOA... I FEEL DIZZY. THAT'S BECAUSE WHILE YOU WERE ON THE FLOOR YOUR HEART DIDN'T NEED TO PUMP BLOOD VERY FAST AND WHEN YOU GOT UP FAST YOUR BLOOD WASN'T GETTING TO YOUR BRAIN FAST ENOUGH. YOU SHOULD BE A DOCTOR. YEAH, I KNOW.
15:45
WHEN YOU'RE RESTING YOUR HEART BEATS ABOUT 70 TIMES A MINUTE. WHEN YOU'RE EXERCISING YOUR HEART MIGHT BEAT 140 TIMES A MINUTE TO KEEP UP WITH YOUR MUSCLES' OXYGEN DEMANDS. THAT'S ONE OF THE THINGS THAT BLOOD DOES. IT BRINGS OXYGEN TO YOUR MUSCLES. YOUR HEART WEIGHS ABOUT 300 GRAMS.
16:09
THAT'S ABOUT AS MUCH AS AN APPLE. IT PUMPS 7,000 LITERS A DAY, EVERY DAY. ISN'T THAT WILD? SOUNDS LIKE A LOT OF WORK. A STRONGER HEART KEEPS YOUR BLOOD MOVING BETTER. YOUR HEART IS A SPECIAL MUSCLE THAT CAN BE MADE STRONGER BY EXERCISE. YEAH, YEAH. ABOUT THAT APPLE... EXERCISING, A LOW-FAT DIET, AND NOT SMOKING CAN KEEP YOUR HEART STRONG
16:37
AND KEEP YOUR ARTERIES FROM GETTING CLOGGED WITH FAT. BECAUSE IF YOU'RE NOT GOING TO EAT IT... COCONUT-- THAT'S A NEAT TRICK. BUT I THINK I'D REALLY LIKE AN APPLE. OH, THANKS.
17:00
TO TAKE A PULSE TAKE TWO FINGERS LIKE THIS...
17:07
COUNT FOR A MINUTE, EVERY TIME IT BEATS. I GOT... EIGHTY-ONE. SEVENTY-ONE. SEVENTY-SEVEN. SEVENTY-FIVE. ONE, TWO, READY, GO.
17:23
MY HEART'S PUMPING! MINE'S GOING TO EXPLODE. MINE'S PUMPING!
17:35
OKAY, CHECK YOUR PULSES.
17:41
I GOT 128. 153. 145. 156. I GOT 140.
17:54
All: SCIENCE. AS YOU STAND UP, THE BLOOD THAT'S IN YOUR HEAD CAN END UP FLOWING DOWN INTO YOUR BODY. YOU GO UP-- THE BLOOD GOES DOWN. THIS HARNESS FITS TIGHT. TIGHT, THAT'S THE WORD I'M GOING FOR HERE. (<i> gasping:</i> ) FEELS GREAT. SUPPOSE YOU'RE IN A PLANE.
18:18
Man: Roger 8-0-1. Have a good flight. All Right. All set?
18:28
AND YOU DO A MANEUVER LIKE THIS...
18:33
THE PLANE'S GOING UP, YOUR HEAD'S GOING UP BUT THE BLOOD KIND OF STAYS STILL <i> SO IT GOES DOWN...</i> DOWN.
18:45
SO WHAT WE DO-- WE INFLATE THESE BALLOONS RIGHT HERE... TIGHT. THESE ARE AIR BLADDERS.
18:56
RIGHT HERE.
18:59
THIS IS CALLED A "G" SUIT <i> WHEN YOU PULL G's.</i>
19:09
AS WE GO UP, OUR BLOOD WANTS TO STAY STILL AND OUR BODY WANTS TO GO UP. OUR BRAIN WON'T GET ENOUGH BLOOD BECAUSE OUR HEART CAN'T PUMP ENOUGH BLOOD <i> INTO OUR BRAIN.</i> SO WE INFLATE AIR BLADDERS TO HOLD THE BLOOD HERE KEEPING IT PUMPING TO YOUR BRAIN. MY HEART WAS PUMPING, KEEPING BLOOD IN MY BRAIN AND WE MADE IT BACK OKAY.
19:43
<i> NOW YOU KNOW.</i> THIS IS A VALENTINE. THIS IS A HEART, A MUSCLE THAT CAN BE MADE STRONGER THROUGH EXERCISE. VALENTINE... HEART.
19:58
(<i> pop dance beat playing</i> ) ♪ IF YOU'RE IN A BLOOD VESSEL ♪ ♪ BY THE SIDE OF A VEIN ♪ ♪ IT MEANS YOU'RE IN THE MIDDLE OF THE ♪ ♪ BLOODSTREAM ♪ ♪ BLOODSTREAM, YEAH, YEAH ♪
20:15
♪ OUR HEARTS PUMP BLOOD ♪ ♪ THROUGH OUR VEINS ♪ ♪ CIRCULATING RED CELLS ♪ ♪ AND WHITE CELLS ♪ ♪ THROUGH OUR ARTERIES ♪ ♪ I GOT ME A HEART-- IT'S PUMPING AWAY ♪ ♪ IT JUST KEEPS ON GOING TO KEEP ME ALIVE ♪ ♪ IT'S GOT FOUR CHAMBERS-- THEY ALL WORK TOGETHER ♪ ♪ IT'S A VERY STRONG MUSCLE SO I EXERCISE ♪ ♪ WELL, THE BLOODSTREAM IS A VERY WARM PLACE ♪
20:48
♪ THAT KEEPS US TOGETHER ♪ ♪ BLOODSTREAM, BABY ♪ ♪ BLOODSTREAM, BABY ♪ ♪ BLOODSTREAM RUNS THROUGH YOUR SPLEEN ♪ ♪ BLOODSTREAM RUNS THROUGH YOUR SPLEEN ♪ ♪ SAY, WHAT? ♪ ♪ CIRCULATION ♪ ♪ BLOODSTREAM-- IT'S YOUR BLOODSTREAM ♪ ♪ IT'S YOUR BLOODSTREAM ♪ ♪ IT'S YOUR BLOODSTREAM ♪ ♪ BABY ♪
21:18
♪ BLOODSTREAM-- IT'S YOUR BLOODSTREAM ♪ ♪ RUNNING THROUGH YOUR VEINS ♪ ♪ BLOODSTREAM-- IT'S YOUR BLOODSTREAM. ♪
21:34
HOW ARE WE FEELING? YOUR HEART SOUNDS GREAT. IT'S DOING IMPORTANT WORK-- PUMPING BLOOD THROUGH YOUR VEINS AND ARTERIES. WELL, THAT'S OUR SHOW. I'D SAY THIS OPERATION WAS A SUCCESS. KEEP ON LUBBING AND DUBBING. <i> PRODUCED IN ASSOCIATION WITH...</i> YOUR HEART PUMPS THE SAME LITERS ALL THROUGH YOUR BODY-- OVER $100,000 A DAY. WILD!
22:04
(<i> people laughing</i> ) (<i> hissing</i> ) Man #1: BACK TO THE TOPIC. Man #2: BACK TO BLOOD AND CIRCULATION. OKAY. OKAY, YEAH. Man #1: OKAY, ACTION. NOW? THIS IS ABOUT HOW MUCH BLOOD IS IN YOUR BODY-- ABOUT FIVE LINCHES.
22:28
Man: TRY IT AGAIN. <font color="#ffff00"> Captioning sponsored by</font> <font color="#ffff00"> DISNEY EDUCATIONAL PRODUCTIONS</font> Captioned by <font color="#00ffff"> Media Access Group at WGBH</font> access.wgbh.org <i> WHITE BLOOD CELLS...</i> <i> FIVE MILLILITERS...</i> <i> THIS IS HOW... ABOUT...</i> <i> YOU GIVE...</i>
22:43
<i> MESSED UP.</i> <i>YOUR HEART PUMPS THE SAME LITERS</i> <i> ALL THROUGH YOUR BODY</i> <i> OVER 100,000 TIMES A DAY!</i> <i> WILD!</i> Man: <i> YES!</i> (<i> applause</i> )
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