all right welcome back welcome back welcome back to science all right we're going to talk about the salivary glands there's a few different salivary glands we're going to look at so the salivary glands secrete saliva so saliva what is that is it just water is a thick water what makes it not so watery because it's not as thin as water when we open it's kind of stringy a little bit it's going to most moisten the food particles and it's going to dissolve some food so that we can taste that within saliva there are enzymes the enzymes help us digest certain things like glycogen and starch but also there's bicarbonate ions which help keep things at the right pH because if they're at a different pH we may not be able to digest it and if it's of the wrong pH it may actually start working on breaking down our teeth all right so three pair of major salivary glands we have the parotid submandibular and sublingual glands the product is the largest it's going to secrete a Cirrus saliva with amylase some mandibular glands are going to be on the floor of the mouth submandibular sub means below mandibular refers to your mandible and so our bottom jaw bone is our mandals mandible so it's going to be lower than that our sublingual is going to be below our lingual so lingual is tongue so this is under the tongue and it mainly makes mucus many minor glands are also going to be involved in keeping everything moist and functional so the different pairs of cellular glands have varying proportions of two different kinds of secretory cells we have the serious cells they produce the watery fluid they contain a digestive enzyme called salivary amylase why we care so much about salivarium lace it breaks down starch which is a polysaccharide we're able to get the glucose from that as a major source of carbohydrates so starchy foods like potatoes and pastas are broken down largely in part in our mouth is where it starts with that digestion with the mastication and moving the amylase into that material as it's being mashed together the mucosals are going to secrete mucus so mucospines food particles and lubricates them while swallowing here's our product gland so it's located here so find ear and just move in a little bit this is our masseter muscles so you can see the large Master muscle which is there if you bite down it'll pop up so it's masseter and you got to go back towards your ear a little bit and up a little bit and you're going to be in the area of where your parotid gland is going to be you have them on both sides of your head and this is going to move through across the the duct is going to move across the master muscle and dive through the buccinator as it's going to be dumping in to our alveolar space so here's our masseter muscle let's take a look at just below the tongue this guy's having a bad day cutaway of a mandible you're going to have the sub lingual here's lingual so this is below the lingual and below that but beneath our mandible is our sub-mandibular there's our submandibular duct all right that takes care of salivary glands we'll be back soon with more content on uh major areas of the pharynx and esophagus