1 00:00:00,575 --> 00:00:00,639 [applause] Ok, Ok, yea I have to take care of this now 2 00:00:00,639 --> 00:00:08,226 How are you doing Mr. Marrow, sorry I'm late 3 00:00:08,226 --> 00:00:10,005 there was a lot going on in the lab. Boy 4 00:00:10,005 --> 00:00:12,644 Mr. Marrow are you getting enough exercise for 5 00:00:12,644 --> 00:00:23,969 your muscles? It's like you're all bone. Mr. Marrow? Mr. Marrow? Mr. Marrow? NOOOOOOOOOOOOOOO! 6 00:00:23,969 --> 00:00:36,302 Bill Nye the Science Guy, Bill Bill Bill Bill Bill Nye the science guy. Science rules! 7 00:00:36,302 --> 00:00:42,559 Bill Nye the science guy. Ernicia is a property of matter. 8 00:00:42,559 --> 00:00:51,446 Bill Bill Bill Bill Nye the science guy. T minus 7 seconds 9 00:00:51,446 --> 00:00:59,099 Bill Nye the science guy. bRought to you by bones without them you wouldn't have a leg to 10 00:00:59,099 --> 00:01:04,580 stand on. bones and muscles available in fine animals everywhere 11 00:01:04,580 --> 00:01:07,771 do you realize to work these buttons and open 12 00:01:07,771 --> 00:01:12,476 this door I need every muscle and bone in my body 13 00:01:12,476 --> 00:01:14,841 that's because they're all working together 14 00:01:14,841 --> 00:01:22,181 whether your waving, walking, walking funny 15 00:01:22,181 --> 00:01:31,055 running, jumping, or flying your muscles and bones work together 16 00:01:31,055 --> 00:01:34,393 to make you move. see there's a skeleton in 17 00:01:34,393 --> 00:01:38,226 every one of us. we're all a bunch of bones 18 00:01:38,226 --> 00:01:41,932 this is our extension arm of science. This 19 00:01:41,932 --> 00:01:46,203 white pieces are like bones and these thin ropes are like 20 00:01:46,203 --> 00:01:49,919 muscles. now watch what happens when we make this rope 21 00:01:49,919 --> 00:01:53,970 this muscle shorter. the arm moves this way 22 00:01:53,970 --> 00:01:57,186 we make this rope shorter the arm moves that 23 00:01:57,186 --> 00:02:07,142 way. see hoo, haw hoo haw hoo haw hoo haw hoo haw 24 00:02:07,142 --> 00:02:11,560 no matter which way pushing or pulling the muscles are getting shorter 25 00:02:11,560 --> 00:02:16,539 they are contracting. Now we have 200 bones on our body 26 00:02:16,539 --> 00:02:20,439 most of them are controlled with two sets of muscles 27 00:02:20,439 --> 00:02:24,753 that's what allows us to move and jump and 28 00:02:24,753 --> 00:02:30,554 hoo haw. Bones form the framework of our body 29 00:02:30,554 --> 00:02:36,258 ligaments help hold the bones together muscles move the bones 30 00:02:36,258 --> 00:02:39,723 tendons anchor the muscles to the bones. 31 00:02:39,723 --> 00:02:44,875 AHHHCHOO. you have tendons all over your body 32 00:02:44,875 --> 00:02:47,615 as you can see the tendons in the back of your 33 00:02:47,615 --> 00:02:50,443 hands. those tendons connect these muscles 34 00:02:50,443 --> 00:02:56,205 with these bones. Isn't that cool? Oh, I've 35 00:02:56,205 --> 00:03:02,914 gotta go. Whats the breakfast treat that 36 00:03:02,914 --> 00:03:06,144 sure to please from your pirital bone to your 37 00:03:06,144 --> 00:03:13,357 flanges. Bone-os, bone-os. Here's a very 38 00:03:13,357 --> 00:03:15,886 cool experiment that you can do to prove that 39 00:03:15,886 --> 00:03:18,338 bones have minerals. Next time you eat 40 00:03:18,338 --> 00:03:20,719 chicken or turkey save the bones. Take a leg bone 41 00:03:20,719 --> 00:03:23,411 it's the biggest bone and put it in a bowl of 42 00:03:23,411 --> 00:03:28,504 vinegar. We're wearing safety goggles becauase 43 00:03:28,504 --> 00:03:33,892 vinegar is an acid. Leave the bones in for a long 44 00:03:33,892 --> 00:03:37,388 time after 2 months. The acid dissolves all the 45 00:03:37,388 --> 00:03:40,640 mineral away from the bone. Without minerals 46 00:03:40,640 --> 00:03:42,785 the bones get soft and easy to bend. You can 47 00:03:42,785 --> 00:03:52,602 even tie one in a knot. There. [applause] 48 00:03:52,602 --> 00:04:01,225 hammering looks simple doesn't it? You just 49 00:04:01,225 --> 00:04:03,723 move your arm, but watch the hammer needs your 50 00:04:03,723 --> 00:04:05,679 fingers and they are connected to your wrist 51 00:04:05,679 --> 00:04:07,472 and that's connect to your lower arm and that's 52 00:04:07,472 --> 00:04:09,593 connected to your upper arm and that's connected 53 00:04:09,593 --> 00:04:11,521 to your back and that's connected to your 54 00:04:11,521 --> 00:04:16,142 leg. Look you even need to move your toes to hammer. To even 55 00:04:16,142 --> 00:04:18,477 do a simply thing like this you need your whole 56 00:04:18,477 --> 00:04:22,144 body because your bones and muscles are connected. 57 00:04:22,144 --> 00:04:33,221 Oh, oh ouch ouch. [ominous music] what is that 58 00:04:33,221 --> 00:04:41,691 over there what is that thing? Ohhh It's the 59 00:04:41,691 --> 00:04:46,555 science guy! Scared you huh? See sharks don't have 60 00:04:46,555 --> 00:04:53,300 any bones they're all cartilage soft and rubbery. You have cartilage too in 61 00:04:53,300 --> 00:05:01,727 your ribs, your ears, and your nose. See how soft it is and rubbery. 62 00:05:01,727 --> 00:05:32,373 What? [music] 63 00:05:32,373 --> 00:05:36,305 Without bones, we couldn't hold ourselves up. 64 00:05:36,305 --> 00:05:43,891 We'd be floppy, like this pancake. We'd just collapse. 65 00:05:43,891 --> 00:05:47,979 On the other hand, if we're all stiff rigid bone, like this 66 00:05:47,979 --> 00:05:51,218 gingerbread guy then we couldn't move at all we need 67 00:05:51,218 --> 00:05:54,813 muscles and soft movable parts to get around 68 00:05:54,813 --> 00:06:00,501 muscles move our bones around. That's how it works, whether you're lifting something 69 00:06:00,501 --> 00:06:05,062 pushing, or jumping up like a spring, ha ha 70 00:06:05,062 --> 00:06:08,811 muscles and bones help us move around. coming this 71 00:06:08,811 --> 00:06:15,973 sunday its the muscle pull. smooth striped and caridac 72 00:06:15,973 --> 00:06:19,942 we've got it all! Muscles, muscles, and more muscles 73 00:06:19,942 --> 00:06:22,951 extending and contracting and moving like 74 00:06:22,951 --> 00:06:26,463 you've never seen before! So grab the kids 75 00:06:26,463 --> 00:06:29,805 grab the dog and grab the neighbors and grab your ace bandage 76 00:06:29,805 --> 00:06:32,757 and come on down to the anatomy arena! 77 00:06:32,757 --> 00:06:44,221 muscles move our bodies. without muscles we couldn't ride a bike. 78 00:06:44,221 --> 00:06:50,009 or play with dogs [Man: Uh, Bill] or do experiments in the lab. 79 00:06:50,009 --> 00:06:52,973 [Man: Bill] so our muscles help us move 80 00:06:52,973 --> 00:06:57,016 because they all work together [man: your not fooling anyone Bill.] 81 00:06:57,016 --> 00:07:00,354 So as i move the muscles in my arm my biceps 82 00:07:00,354 --> 00:07:05,109 i'm also moving all the other muscles in my body 83 00:07:05,109 --> 00:07:09,054 because they're all connected 84 00:07:09,054 --> 00:07:20,802 bones! [man: Bill, uh Bill] Muscles!! 85 00:07:20,802 --> 00:07:23,357 Those are very fine muscles you have. Of 86 00:07:23,357 --> 00:07:26,107 course you know these muscles are very important 87 00:07:26,107 --> 00:07:30,791 they give you the power to move about to do the work in the fields. 88 00:07:30,791 --> 00:07:33,020 now if we can look inside of you we can see 89 00:07:33,020 --> 00:07:35,564 the skeleton, the bones of your body. why do you 90 00:07:35,564 --> 00:07:43,611 have these bones? The best way is to take away the skeleton and see what happens. 91 00:07:43,611 --> 00:07:49,184 look out! down you go you see you really need that skeleton 92 00:07:49,184 --> 00:07:51,222 that's the framework that holds your body up. 93 00:07:51,222 --> 00:07:53,719 Did you know that teeth are the strongest 94 00:07:53,719 --> 00:07:56,028 bones in the skeleton. There are 3 bones 95 00:07:56,028 --> 00:08:01,691 in the ear, the hammer, the anvil, the stirrip. There are over 600 separate muscles in the body. 96 00:08:01,691 --> 00:08:06,448 now you know!! Our bodies are like machines. 97 00:08:06,448 --> 00:08:09,246 or machines are a lot like our bodies. when 98 00:08:09,246 --> 00:08:13,388 a mechanism moves they have joints. like this 99 00:08:13,388 --> 00:08:16,813 door has a hinge. we have hinge joints in 100 00:08:16,813 --> 00:08:29,907 our fingers and our jaws. Ahhhhhh! 101 00:08:29,907 --> 00:08:32,451 [skeleton: Hello there Bill] our bones and muscles 102 00:08:32,451 --> 00:08:35,389 let us move our joints. Please consider the 103 00:08:35,389 --> 00:08:43,076 following. 104 00:08:43,076 --> 00:08:46,442 So in our hand, we have hinge joints. Like the 105 00:08:46,442 --> 00:08:52,084 hinges on a gate. Also in our hands we have a 106 00:08:52,084 --> 00:08:54,440 special joint called the saddle joint, in our 107 00:08:54,440 --> 00:08:58,043 thumb. It allows our thumb to go this way 108 00:08:58,043 --> 00:09:03,753 or this way. 2 directions 1 joint. cool! 109 00:09:03,753 --> 00:09:08,697 also in our body we'll find ball socket joints 110 00:09:08,697 --> 00:09:13,499 the kind we see in a tv. Ball and socket joints 111 00:09:13,499 --> 00:09:17,860 in our body are in our hips. look at our 112 00:09:17,860 --> 00:09:24,079 hips move in all different ways. 113 00:09:24,079 --> 00:09:32,520 In our backs, we have swervy joints a whole bunch of them. Our backs slide 114 00:09:32,520 --> 00:09:35,529 theres in joints in our body that don't move at all. 115 00:09:35,529 --> 00:09:41,959 fixed joints. There's fixed joints in your skull, but they don't move. all the 116 00:09:41,959 --> 00:09:44,410 different joints in our body let our bodies move 117 00:09:44,410 --> 00:09:47,305 all different ways. Thanks for joining me 118 00:09:47,305 --> 00:10:46,031 I mean joint-ing me on consider the following. 119 00:10:46,031 --> 00:10:48,759 introducing a collection of music so spine 120 00:10:48,759 --> 00:10:51,409 tingling it can be brought to you only by 121 00:10:51,409 --> 00:10:56,779 Deutsch gramabone. Presenting bonely is the night. 122 00:10:56,779 --> 00:11:04,678 who can forget songs like, Tiba tiba tibula, how i love my tibula. 123 00:11:04,678 --> 00:11:14,197 my leg bone and me. If I din't have a spine I couldn't stand it. Because I couldn't stand! 124 00:11:14,197 --> 00:11:17,331 Yo cranium, clavicle, and sternum you've got 125 00:11:17,331 --> 00:11:22,203 you got over 200 bones why don't you learn them. All these and many many more 126 00:11:22,203 --> 00:11:26,909 you realize what you're doing, don't you? 127 00:11:26,909 --> 00:11:29,914 Yea, I'm cracking my knuckles in your face. 128 00:11:29,914 --> 00:11:32,518 Actually you're pulling your bones apart and letting air 129 00:11:32,518 --> 00:11:38,611 bubbles between your joints. I am? 130 00:11:38,611 --> 00:11:41,596 I'm Tim Eng I work for Nike sport research 131 00:11:41,596 --> 00:11:43,395 lab and we have fun here and try to find 132 00:11:43,395 --> 00:11:46,424 the science behind the shoes. 133 00:11:46,424 --> 00:11:48,298 Big part of my job is learning how to distribute 134 00:11:48,298 --> 00:11:50,766 the pressure beneath the foot to minimize the 135 00:11:50,766 --> 00:11:55,363 impact and shock up into the bones and muscles 136 00:11:55,363 --> 00:11:57,361 with the bare foot we can see how much pressure 137 00:11:57,361 --> 00:11:59,198 is beneath the heel, the ball of the foot and 138 00:11:59,198 --> 00:12:01,566 the big toe. with a well design shoe we can 139 00:12:01,566 --> 00:12:03,735 distribute the pressure over the foot so that 140 00:12:03,735 --> 00:12:05,642 we can absorb some of the shock that goes 141 00:12:05,642 --> 00:12:09,182 through the bones and muscles of the legs. 142 00:12:09,182 --> 00:12:10,981 with the shoe we can see the high pressure 143 00:12:10,981 --> 00:12:13,755 beneath the heel are gone and force of pressure 144 00:12:13,755 --> 00:12:17,796 is distributed evenly. good shoes fewer 145 00:12:17,796 --> 00:12:25,111 injuries! 146 00:12:25,111 --> 00:12:28,658 Bile Nye!!! it's easier to smile than it is 147 00:12:28,658 --> 00:12:30,672 to frown. That's because you only need 148 00:12:30,672 --> 00:12:35,352 17 muscles in your face to smile, but it takes 149 00:12:35,352 --> 00:12:43,700 43 muscles to frown. Ouch! that was my foot! 150 00:12:43,700 --> 00:12:56,016 You never knoww when you're going to need more energy, less energy to smile! See ya! 151 00:12:56,016 --> 00:12:59,195 Did you know that...a sparrow has more bones in it's neck 152 00:12:59,195 --> 00:13:01,943 than a giraffe does. The largest bone ever 153 00:13:01,943 --> 00:13:05,928 found was the 7 ft long brachiosaurus arm bone. 154 00:13:05,928 --> 00:13:09,114 Birds have hollow bones, which are light, so they can fly. 155 00:13:09,114 --> 00:13:11,456 Now you know!! ladies and gentlemen, I 156 00:13:11,456 --> 00:13:16,530 present the bone. Although bones come in all different shapes and sizes, they 157 00:13:16,530 --> 00:13:20,200 are basically the same 3 things. On the outside 158 00:13:20,200 --> 00:13:24,707 is a hard membrane called the periosteum, 159 00:13:24,707 --> 00:13:30,948 and underneath that is a layer called the compact bone. that's the layer a dog really likes. 160 00:13:30,948 --> 00:13:34,667 then on the inside the soft cancellous bone 161 00:13:34,667 --> 00:13:39,090 sometimes called the spongy bone. see dogs 162 00:13:39,090 --> 00:13:44,199 aren't into sponges, but dogs do like bones 163 00:13:44,199 --> 00:13:47,934 Bones are apart of you, part of what keeps you 164 00:13:47,934 --> 00:13:59,380 kicking. and kicking, part of what keeps you 165 00:13:59,380 --> 00:14:05,845 kicking. Nice job! I got a bone to pick with you. When you're born you have 166 00:14:05,845 --> 00:14:09,284 about 350 bones. There not all bones, 167 00:14:09,284 --> 00:14:14,905 there's cartilage, that's what your ear is made of, and your ears. 168 00:14:14,905 --> 00:14:18,591 anyway cartilage fuses together to make bones 169 00:14:18,591 --> 00:14:24,431 your skull starts as several different plates and ends up as 1 big bone. 170 00:14:24,431 --> 00:14:26,807 So by the time your my age you only have 171 00:14:26,807 --> 00:14:30,019 200 bones. But you started out with 350, isn't 172 00:14:30,019 --> 00:14:32,375 that wild. hey listen i'm not pulling your 173 00:14:32,375 --> 00:14:39,641 femur. that's a bone gag. she loves those bones jokes, don't ya. 174 00:14:39,641 --> 00:14:46,539 oh please. to the bone mobile. 175 00:14:46,539 --> 00:14:49,402 [Moo] Hey, leave that cow alone. I'm bone 176 00:14:49,402 --> 00:14:55,033 boy! but i was going to milk it. then you 177 00:14:55,033 --> 00:15:01,478 know that milk is a strong source of calcium. I'm bone boy!! 178 00:15:01,478 --> 00:15:04,487 Ahh calcium. [tink tink on glass] Milk is a 179 00:15:04,487 --> 00:15:08,042 good source of calcium and other minerals 180 00:15:08,042 --> 00:15:11,240 is what help make your bones so strong. 181 00:15:11,240 --> 00:15:14,770 here's a t-bone from a t-bone steak and here's 182 00:15:14,770 --> 00:15:17,924 a piece of aircraft aluminum 183 00:15:17,924 --> 00:15:20,404 you hold them like this they have the same 184 00:15:20,404 --> 00:15:23,676 sizes and shape, which one is stronger 185 00:15:23,676 --> 00:15:26,077 take a look, we've mounted them both on this 186 00:15:26,077 --> 00:15:31,023 t-stand of science. t-bone, t-stand, haha let's 187 00:15:31,023 --> 00:15:33,692 put some heavy weights on them. this would 188 00:15:33,692 --> 00:15:39,133 be a couple of liters of heavy soft drink. 189 00:15:39,133 --> 00:15:42,793 they both bend down about the same amount. 190 00:15:42,793 --> 00:15:45,336 that's not all there is to having bones 191 00:15:45,336 --> 00:15:50,942 you playing soccer and get hit in the ribs in the t-bone 192 00:15:50,942 --> 00:15:53,141 watch, we'll simulate getting hit in the bone 193 00:15:53,141 --> 00:15:58,485 with this pair of plyers, t-bone pretty strong 194 00:15:58,485 --> 00:16:05,341 aircraft aluminum not so strong. see it a 195 00:16:05,341 --> 00:16:11,021 good thing you're made of bone. 196 00:16:11,021 --> 00:16:15,072 a real good thing. milk a strong source of 197 00:16:15,072 --> 00:16:30,118 calcium. I'm bone boy. 198 00:16:30,118 --> 00:16:32,274 wrestling has a lot of do with balance and 199 00:16:32,274 --> 00:16:35,980 strength, speed, agility and moving joints the 200 00:16:35,980 --> 00:16:57,638 wrong way. It's a lot of fun! 201 00:16:57,638 --> 00:17:05,739 Now what? By doing this bending the knee joint the opposite way 202 00:17:05,739 --> 00:17:08,051 Elbows bent like this by putting more pressure 203 00:17:08,051 --> 00:17:10,490 on it the joint, it'll pull away from the 204 00:17:10,490 --> 00:17:14,852 shoulder and causes him to have pain. 205 00:17:14,852 --> 00:17:24,596 wrestling is painful, but it's fun! 206 00:17:24,596 --> 00:17:28,053 I win! 207 00:17:28,053 --> 00:17:30,509 Your back bone isn't 1 single bone, it's 208 00:17:30,509 --> 00:17:34,685 actually 33 small bones stacked on top of each 209 00:17:34,685 --> 00:17:37,982 other. small bones are called vertebra 210 00:17:37,982 --> 00:17:40,178 and they're hollow they protect your spinal 211 00:17:40,178 --> 00:17:42,484 cord the bundle of nerves that run down 212 00:17:42,484 --> 00:17:45,300 your back. Now the spinal column supports 213 00:17:45,300 --> 00:17:49,827 your whole body. a bunch of gliding joints 214 00:17:49,827 --> 00:17:53,310 they glide on each other because each vertebra 215 00:17:53,310 --> 00:17:57,609 separated by a soft squishy disk called cartilage. 216 00:17:57,609 --> 00:18:00,364 the same stuff you have in your nose. 217 00:18:00,364 --> 00:18:04,270 so your spinal column has a whole bunch of gliding joints. that's what makes you flexible. 218 00:18:04,270 --> 00:18:10,375 you can i have 33 vertebra a big snake like thi 219 00:18:10,375 --> 00:18:12,779 has over 400. thats why snakes are so 220 00:18:12,779 --> 00:18:15,582 flexible. you know Mr. Python that's a great 221 00:18:15,582 --> 00:18:19,654 looking backbone. A great looking set of back bones. 222 00:18:19,654 --> 00:18:20,528 it's really nice. Mr. Python, Mr. Phython, Mr. Pyyyython. 223 00:18:20,528 --> 00:18:40,580 They came from the spindarosa bone-anza! 224 00:18:40,580 --> 00:18:46,187 So little Joe I aint what you call fat am I? 225 00:18:46,187 --> 00:18:54,204 I'm just big boned, right? Yea, big boned, that's what you are. 226 00:18:54,204 --> 00:18:56,565 actually there really no such thing as big 227 00:18:56,565 --> 00:19:02,709 boned. most humans have the same bones in the same size. 228 00:19:02,709 --> 00:19:07,974 so my bones they are about the same size as his. buy guys like Hass 229 00:19:07,974 --> 00:19:13,175 you know how sensitive they can be. Yup, big 230 00:19:13,175 --> 00:19:19,272 boned that what I am. Yea, big boned 231 00:19:19,272 --> 00:19:22,252 Did you know that...muscle makes up 85% OF YOUR 232 00:19:22,252 --> 00:19:24,993 body weight. a human skeleton starts out as 233 00:19:24,993 --> 00:19:27,122 cartilage that hardens into bones over your 234 00:19:27,122 --> 00:19:53,787 entire lifetime. Bones is stronger inch to inch than skyscrappers. Now you know! 235 00:19:53,787 --> 00:19:58,830 our bones move in different ways because they're all connected by joints. 236 00:19:58,830 --> 00:20:30,963 they all work together so we can do things like this. 237 00:20:30,963 --> 00:20:34,740 Got bones in my body, or else i'd be like 238 00:20:34,740 --> 00:20:40,350 jelly. they help me stand up staight so i can 239 00:20:40,350 --> 00:20:47,609 perform ballet. yea, i got bones in my body 240 00:20:47,609 --> 00:20:51,692 working with my muscles too. they let me do my 241 00:20:51,692 --> 00:21:03,207 ballet and how about you. like a true burn brake i think bones bones are great, they 242 00:21:03,207 --> 00:21:16,734 work with muscles too they're in me and you! bones in my body! 243 00:21:16,734 --> 00:21:31,414 bones in my body! thanks for muscling in to 244 00:21:31,414 --> 00:21:36,305 see this show. it sent chills up my spine. if you 245 00:21:36,305 --> 00:21:42,868 excuse me I need to bone up for the next 246 00:21:42,868 --> 00:21:45,008 show. produced in association with the national 247 00:21:45,008 --> 00:21:53,566 science foundation. what? it's the fin isn't it. 248 00:21:53,566 --> 00:21:57,116 your bones are connected to your muscles and 249 00:21:57,116 --> 00:22:02,678 the 2 of them working together will allow you to ride your bike up this hill. 250 00:22:02,678 --> 00:22:06,864 see the stiff bones are connected to the soft 251 00:22:06,864 --> 00:22:12,652 muscles. Race ya! Fools, they laughed at 252 00:22:12,652 --> 00:22:18,156 me. i use bones and muscles to answer the 253 00:22:18,156 --> 00:22:32,310 phone, small world huh? Alien boy, love ya. that was my mom