this is just a very short presentation to talk a little bit about glandular tissue and its relevance to the topic that were discussing the whole here which is epithelium it's important to understand what glands are and it's a term that's used incorrectly in layman's terms so for example you'll often hear people see you know when they've got cooled on a slough or something that their glands are swollen and what they mean by that is the area underneath their mandibles and this of urgell it feels a bit swollen those are not glands in the true sense of the word to be or what we call lymph nodes and we'll come on to their much lesser than the semester what glandular tissue actually is is any tissue which produces secretions and we've got lots of glandular tissue throughout our body and it can range from just one individual cell producing secretions rate up to a complex structure of multiple tissues so a good example of just one sale on its own is a goblet cell and that's something you should have come across already when you were talking when you've read about epithelium and we'll save a talk about it more when we look at music membranes next session and and that's just one sale on its own that produces our liquid tape to the chrétien in the form of mucus that is expelled into a cavity so the other licks that we have something like the thyroid glands which is what I've got pictured here which is a very complex structure and please a big rule in the maintaining of the body as a whole but either we they both produce secretions and therefore they are both considered to be glandular tissue so why are we talking about this now right at the beginning well epithelial cells produce the successions we've worked a little bit already about the four dozen types of test your tapes epithelium connective tissue muscle and nervous tissue now all those forward to extricate to the only one that has the ability to produce secretions is epithelium and therefore epithelial cells must be involved in glandular tissue and the reason why this is a little bit different to other episode is because we've kind of considered epithelium only really as a lining or a covering so our skin but is made up of epithelium and then the lining on the inside of our body is really the lining of the mouth of the digestive tract things like that and they're very much either on the outside of the very inside when it's glandular tissue is buried deeper than other fishes for example things like aside our generous deep within your neck so it's a different place to really expect to stay in the epithelium in the sense that we've talked about it already this cell the epithelial cells within glandular tissue that produced secretions are simple epithelium and they are generally either cuboidal or columnar producing secretions doesn't really set with the structure of screamers simple epithelium so we can take that one out the cuboidal or columnar and it really depends on what type of gland is as to whether that s cuboidal or columnar and you're going to talk about individual glands a lot listed on in the course in the whole of this course in particular we'll talk about all in biomedical sciences and also in oral biology and next semester about different clients I don't want to complex things too much with that just important to remember that every epithelial cells that are traditionally secretions and they're generally either cuboidal or columnar and glands can be categorized in a number of different ways but the predominant ones that we talk about our X or cloning glands or endocrine glands and there's a very clear and simple distinction between the two so EXO playing glands produce secretions which travel along a duct and then empty out into a space and in doing so they get their secretions out and into the rest of the body so a good example of that is the saliva glands which is what we've got pictured here it's a collection especially in the number of different places late the maze that produce the mucus or the serious secretions and then there's a little tube so a duct which enters a into the maze and you can see them and underneath the tongue is a good example our next to your up or more those as well you've also got to live again ducts clear so it's quite straightforward and how the secretions get to where they need to be endocrine glands don't have sucked their secretions are released directly into the bloodstream and then the body relies on the blood moving those secretions around the body to where they need to be and the secretions that are produced from X endocrine glands are called hormones so the example of got here is the adrenal glands and these lie on the top of each of the kidneys and however the secretion from the adrenal gland can affect the entire body so therefore they're going to use the bloodstream to move them around and they're an endo Klinger so exocrine glands have ducts and in the claims a ductless but at a number of other ways in which we can talk about glands and their functions and structure but I just want to leave it quite simply just notes and that you understanding that it's epithelial tissue that's involved in the production of 60 cents