| 00:00 | and and lab was okay too. look, I don't know about |
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| 00:07 | All right. What we're gonna do is we're gonna finish up really, |
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| 00:11 | we started yesterday, we're gonna really of just introduce ourselves some ideas in |
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| 00:15 | . So basically kind of oriented to ourselves around the body very, very |
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| 00:20 | . We've already kind of looked at a general sense of what the hierarchy |
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| 00:24 | . We're going to dive deeper into as we go along. In |
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| 00:26 | that's half of what today's lecture We're gonna look at biomolecules. |
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| 00:30 | but we're going to start with and say, all right, how do |
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| 00:32 | work around the body so that we communicate clearly. One of the things |
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| 00:36 | a lot of people don't realize in is much of the work that we |
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| 00:39 | here is vocabulary, right? We're a new language and some of you |
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| 00:44 | bilingual. Some of your trilingual. had a couple of students who have |
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| 00:47 | than four or five languages. I not. I lived on the border |
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| 00:50 | my entire life. I took spanish probably first grade up through college and |
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| 00:56 | I can do is order a beer ask where the bathroom is, |
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| 01:01 | But I can't speak Biology's and that's of what this is is we're gonna |
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| 01:07 | a little bit of how to communicate the body. And so the first |
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| 01:13 | we're gonna do is we're just gonna at some anatomical terms and and what |
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| 01:16 | gonna point out here is like these , you should know, but like |
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| 01:19 | the next slide it's we're going to our way into those terms. And |
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| 01:23 | what you're looking at here is what would consider the anatomical position. And |
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| 01:29 | you can see our guys sitting here this And he's not just standing there |
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| 01:33 | you to to look at him in his glory. What you can imagine |
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| 01:36 | is you have a cadaver on the Alright. Or a patient on the |
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| 01:40 | and imagine yourself in 13th century Italy in France and you're trying to communicate |
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| 01:48 | to somebody in Germany about what you discovering and what you are exploring in |
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| 01:53 | cadaver because remember bodies were considered sacred if you're digging around in a |
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| 01:59 | you're doing some pretty horrible desecrations, ? And so you have to be |
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| 02:05 | to communicate clearly to the people who speaking another language, right? So |
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| 02:12 | aren't speaking german Germans aren't speaking what are they speaking in common |
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| 02:17 | Right. And so much of the you're doing here is here to help |
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| 02:21 | first, if we can establish in , you know the idea of in |
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| 02:27 | that we're all gonna be looking at that are laid out like this, |
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| 02:30 | we have a starting point in other , you don't have a body that's |
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| 02:34 | up and all twisted around because if sitting there, I'm looking at this |
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| 02:38 | your body is in a different the one that that they're looking at |
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| 02:42 | nothing's gonna make sense. Alright, notice also where the palms are palms |
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| 02:46 | facing outward. Alright, so this not the normal position, this is |
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| 02:52 | the normal position. All right. for the body there are two main |
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| 02:56 | , we have the axle, the region and the appendix color region. |
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| 03:01 | in very very simple terms actual refers the head and trunk appendix refers to |
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| 03:07 | arms and the legs. The And the easy way to remember this |
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| 03:10 | if I chop off your arms and , are you going to die? |
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| 03:15 | , there appendices. There are extra that you don't need now we do |
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| 03:20 | them but you see what I'm But if I chop off your |
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| 03:23 | how long you gonna last? Not much. If I cut out your |
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| 03:26 | and leave the other bits, how are you gonna last? Not at |
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| 03:30 | right. And so the idea here when you think of ax, you'll |
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| 03:34 | of this region and then when you appendix alerts anything hanging off. I |
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| 03:40 | the limbs. Alright now with those this is always the fun part the |
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| 03:45 | first time. Alright, so when start diving down deep into the |
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| 03:50 | everything has a name associated with Now again, this is not a |
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| 03:56 | of things for you to memorize I'm not going to ask you any |
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| 03:59 | these like on the test today. right. But as we start going |
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| 04:03 | the body, you need to start this sort of vocabulary. Now, |
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| 04:08 | of these you already have heard or . So for example, up here |
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| 04:11 | the top of your head, that's . When you hear cranial you're like |
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| 04:13 | yeah, that has to do with head, right? If you hear |
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| 04:16 | example nasal there it is nasal that to do with your nose. So |
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| 04:21 | of these are easy, they're part your daily vocabulary. But then you |
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| 04:25 | some weird ones. I mean so for the chin is referred to as |
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| 04:29 | mental region and be like well wait what I think and it's like |
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| 04:34 | but it actually refers in anatomy to chin. I don't know why didn't |
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| 04:39 | latin. Remember I took spanish. can barely order a beer. |
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| 04:44 | another one. That's a fun If you've ever had a planter's |
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| 04:47 | you probably can look at award like your hand, go, that's a |
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| 04:50 | wart. No, that's just a . A planter's wart refers specifically to |
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| 04:54 | wart on the bottom of the foot that is the planter region of the |
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| 05:00 | time. And you can again go each of these and kind of look |
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| 05:04 | them abdominal. That one axillary, armpit is your axillary region. That's |
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| 05:10 | fun one. And again, as , if you want to, you |
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| 05:14 | scan this in your book. But , I'm not gonna ask you specific |
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| 05:17 | on this test. But moving we'll just kind of drop that word |
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| 05:22 | and that's now a word you start . Okay, pretty simple. All |
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| 05:27 | now the body during development basically starts as a single cell as I mentioned |
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| 05:33 | then it becomes multiple cells. And you end up with in all vertebrates |
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| 05:36 | you end up with this tube like . And this tube like structure implies |
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| 05:42 | there's a space on the inside, space on the inside develops and grows |
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| 05:45 | becomes this organism. And so what end up with is a bunch of |
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| 05:50 | in our bodies. Alright, so are preserved very early on in embryology |
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| 05:54 | you can look at any vertebrate if look at fish and you look |
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| 05:58 | oh I don't know, cows, . They all have these type of |
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| 06:01 | in them. It's just a unique of vertebrates in general. So in |
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| 06:05 | , what we have is we have cavities. And if you don't know |
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| 06:08 | cavity is, it's not the thing find in a tooth that's actually a |
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| 06:11 | name and I'm always forget what it's a carrot or something like that. |
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| 06:15 | a cavity is simply a hollow space hollow area within a body. And |
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| 06:21 | a cavity has fluid in it. , when we say that it's not |
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| 06:26 | that it's stuff floating in fluid, actually, there's fluid that surrounds these |
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| 06:31 | in kind of a unique way, there's some sort of membrane bound or |
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| 06:36 | um structure that holds fluid in it to the things that are held inside |
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| 06:42 | cavity. All right. And we'll about those in just a moment when |
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| 06:45 | kind of dive in deep. the two major cavities in the human |
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| 06:49 | are the dorsal cavity in the ventral . This is an orientation term dorsal |
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| 06:54 | back, ventral means front. All , easy way to remember this. |
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| 06:59 | about a dolphin or a shark. thing that sticks off the back of |
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| 07:02 | back. That finn is called the fin. Yeah. See I'm gonna |
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| 07:07 | hear me say this at least six in the first couple of weeks, |
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| 07:10 | are really simple people. Alright. not like chemists where we come up |
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| 07:14 | numbers and dashes and slashes and these that make no sense, what we |
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| 07:19 | is we name things for what they or for what they look like. |
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| 07:22 | when you look at something and you're see this, especially when you get |
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| 07:25 | nervous system, you're gonna be see these words that are really |
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| 07:28 | But if you go, oh, a second, I understand that we |
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| 07:31 | things for what they look like or what they do also in the |
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| 07:35 | what they connect, then it becomes easy actually to understand what you're looking |
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| 07:38 | you can kind of guess your way some stuff. So, again, |
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| 07:42 | once you start learning the language, can actually start orienting yourself through the |
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| 07:49 | . So, here dorsal cavity means cavity in the back, ventral cavity |
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| 07:53 | one in the front. See how . Alright. So, the dorsal |
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| 07:58 | , the one that's marked in blue . All right. It's completely encased |
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| 08:02 | bone. It is what is responsible containing the brain and the spinal |
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| 08:08 | So, it's made up of actually different cavities. The cranial cavity is |
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| 08:12 | cavity that holds the brain and then the spinal cavity is what holds the |
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| 08:17 | cord. Now they're continuous cavities. happened is that this long to basically |
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| 08:22 | up at the end and because they the unique shapes. We name them |
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| 08:26 | because of the shape or the All right. But notice there is |
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| 08:32 | connection between this blue cavity and this ventral cavity which is being divided into |
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| 08:37 | and the green color. Okay, the dorsal cavity is separate from the |
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| 08:42 | cavities. The dorsal cavity contains solely brain and the spinal cord. |
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| 08:47 | it's basically you're the structures of the system. All right. When you |
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| 08:53 | to the ventral cavity, this is much much bigger if you have ever |
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| 08:59 | or if you've ever gone and watched surgery or something. You can see |
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| 09:02 | basically cut up the belly and there's big giant space full of stuff. |
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| 09:06 | those are the that cavity. There's two subdivisions. The Red one you |
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| 09:11 | marked up here is referred to as Thoracic Cavity. It's basically the stuff |
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| 09:16 | the ribs. Alright. And then below that. Down here, What |
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