most of us take our digestive system for granted until things go wrong today we're going to look at the beginning of the digestive system the tooth and we're going to look at the ending which is the colon all right so the tooth scanning power you'll see this hard outer enamel and then the inner pulp cavity where the blood vessels and nerves are and and this is all in a tissue called Dentin Dentin provides some flexion so the tooth doesn't fracture if you're lucky you might see it a junction between the enamel and the Dentin if you don't see it that's fine there's a sulcus and that's where bacteria builds up so when we brush our teeth we don't want to just come at a perpendicular angle we want to bring that tooth bristle down so that bacteria is removed from the sulcus because if you don't you know this is this is why we people have bad breath and eventually lose their teeth because the bacteria are going to invade the alveolar bone now some of the slides are going to show the tooth facing down because half the teeth in your mouth are facing down so you can flip your slide around so it looks like this all right I drew it and it came out something like this enamel pulp cavity Dentin and Border alveolar bone scanning power then we're going to move on now many of us know the stomach kind of basically esophagus but then what happens gets confusing small intestines and then our area today is going to be the colon cecum here with the appendix on to the flexor the two corners and then out of the body there's another view of it appendix says bacteria cecum is the first pouch of the colon then Ascend goes up and there's a momentum here our belly fat which is not showing up in this model yeah okay so I drew it and it looks something like this with the different regions see them at the bottom small intestines feeding in appendix here ascending means to go upwards liver over here hepatic means liver so that's just flexor means kind of the corner so we turn the corner transverse colon going across there's that belly fat omentum I talked about all right I cut it short because really it covers the whole colon as we gain weight you know it's a lot of it's fear momentum explaining means uh the corner near the spleen descending good name because we're going out of the body s-shaped sigmoid and rectum now there's some notes Here vowel sounds oh that's right you'll get a stethoscope make sure the ear pieces are facing forwards you're going to get consent from a partner and listen to vowel sounds when you do this okay I like to have uh at least a couple fingers uh in contact with the person's skin because that way I can feel their temperature sometimes if they're fighting like a appendicitis severe appendicitis is really hot and so not only are we listening but we're also paying attention to temperature and uh moisture as well you know if they're sweating and they're hot you know then Something's Cooking in there all right the regions we're listening to it's going to be the lower right so you just push in there a little bit with the stethoscope and find a quiet spot if the lab is noisy you can go outside because listening through a stethoscope for vowel sounds takes a lot of concentration okay we're gonna listen to transverse and then we'll just do a third on the lower left all right so instead of doing four we'll just do three and when you're done you'll have something like I have here with your beautiful drawing and you have studied the model of course and you'll have your partner's bowel sounds usually it's quiet you know typically until near the end the bacteria producing gases and you get popping or squealing sounds so just record those make sure you put your partners first name on there all right good luck with it