0:05 How many you guys know the spine pretty good, kind of. Alright so let's talk 0:12 about how to memorize some of the details of the spine. You got 0:15 this big curvy thing with a lot of bones 7, 12, and 5. How many guys have ever heard 0:21 7, 12, and 5? How do you guys remember 7, 12, 5, breakfast, lunch, and dinner. If we still 0:29 lived in the 1950s you guys would wake up and have breakfast at seven. We'd all 0:34 get a lunch break at 12, and you'd come home to dinner at five right. Now you 0:39 guys are students, and I work all the time all over the place, so when do we 0:45 eat? Whenever we can shove food in our mouths. I think that's when we eat. 0:51 But if we go back to 7, 12, and 5, so we have seven what type of vertebrate, 0:59 cervical vertebrae. So those vertebrae in blue there, are seven cervical 1:03 vertebrae. What's special about the cervical vertebrae, where do they exist? 1:06 The neck, those are your neck vertebrae. Alright 12, 12 12 12 12 12 ,12 refers to 1:14 which vertebrae? The thoracic vertebrae. So I have 12 thoracic vertebrae. What's 1:21 special about my thoracic vertebrae? They attach to my 12 ribs, making up my 1:30 thorax right, and lumbar is where your low back is, where I have how many 1:41 vertebrae? Five. You want to know a fun fact, how nerdy I am, you guys ready for 1:49 this? This 7, 12, 5 scheme same for all mammals, you guys are like that's fun 1:57 fact. Now let me explain, let me explain. A giraffe still has seven cervical 2:06 vertebrae, how ridiculous is that, they're just like this tall, that's no joke. Seven 2:16 cervical vertebrae in a giraffe, and then you look at a shrew. You guys ever seen a 2:19 shrew? The thing has no neck, somebody attached its head to its 2:24 shoulders. There's still seven cervical vertebrae. Whales still have a 7, 12, 5 2:31 scheme. Their sacrum and coccyx are separated, but they still have the same 7, 2:38 12, 5. I was in I think it's the Chicago Airport, and there was a giant skeleton 2:46 of a brontosaurus. Of course so what do i do, I stop but I start looking at it, 2:54 people must think I'm freaking crazy at this point right, there like what the 2:57 heck is he doing, and sure enough i'm sitting there counting, i'm going that son 3:01 of a bugs got seven cervical vertebrae, and he had all the same landmarks too. 3:06 Like it was crazy, like the same transverse process, spinous process, like 3:10 I could still point to the lamina, and all of those fun little anatomical things 3:14 about vertebrates they were still there. So 7, 12, 5 a little more interesting 3:20 now? Or no, now you guys just think I'm that much more nerdy. Guys should know my 3:25 friends call me Sheldon, that's totally true. Alright, so we got low back lumbar 3:32 vertebrae. We also have curves to remember in your low back lumbar 3:39 vertebrae, You have a lordotic curve. You guys with me, so make that 3:47 little letter association. Low back is your lumbar spine, and you have a 3:55 lordotic curve, that's the inward curve. Now the opposite of lordotic curve is a 4:03 kyphotic curve. Where do we find a kyphotic curve? The thoracic spine has 4:13 a kyphotic curve. So what type of curve does the cervical spine have? It's another 4:20 lordotic curve. So you have lordotic, kyphotic, lordotic. If you remember it 4:25 from the bottom up, low back, lumbar spine, lordotic curve, you're in good shape. Now 4:32 let's see if we can do this without me, and going to the next slide. 4:36 What are the joint actions of my spine? 4:41 Flexion, extension of my sagittal plane motions. Lateral flexion is my frontal 4:49 plane motion, and then what's my transverse plane motion at the spine? 4:53 Rotation. You guys nailed it, nailed it. 5:04
