So here we have an example problem that says to use an x to indicate the primary function or functions associated with the epithelium in each body location. And so notice that we've got the body location listed in the far left column, and we've got the functions from our last lesson video listed across the top. And so if we take a look at our very first body location, we could see that it is the skin. And so we know that the outermost layers of our skin are going to be covering and lining epithelial tissue. And we know that the skin is going to cover our entire body surface.
And so the skin is going to have a primary function of protection. It is going to protect us from environmental factors, such as, for example, mechanical stresses and microorganisms that might try to penetrate into our body and cause us disease, and it can also protect us from really hot or cold substances. Now, we also know from our last lesson video that the epithelia in our skin can also have an important role in sensation. And so recall that the epithelia in our skin connect us to the outside world, and so it can be important for detecting stimuli in the outside world, such as, for example, touch or pressure or temperature. And the epithelia that detects those initial stimuli can then go on to activate nerve endings of nervous tissue that it is in close connection with to allow for sensation.
And so we can indicate that protection and sensation are primary functions of the skin. Now, in terms of secretion, this is more of a function of glandular epithelial tissue. And so the sweat glands of our skin, that would be more so glandular epithelial tissue, but not so much the epithelial tissue in our skin, the covering and lining epithelial tissue in our skin. And then also, in terms of transport, that's not really a primary function of the epithelial tissue in our skin. If anything, the skin is going to be preventing transport, but, it does so in a protective manner.
For example, preventing the transport of microorganisms in order to protect us from those microorganisms. So moving on, the next body location that we have here is the lining of the bladder, which we'll learn later in our course is also known as transitional epithelium or urothelium. And so the lining of our bladder is going to have a primary function of protection once again. Its job is to essentially protect the rest of the body from the waste products that are found in the urine that can actually cause us damage and harm if those waste products are reabsorbed into our body. And so, the lining of the bladder is going to have a protective function.
It's also going to have a primary function of sensation as well. And so there are nerve endings that are going to allow for us to detect if our bladder is full and needs to be empty. Now, in terms of secretions, again, that's more so of a glandular epithelial function, not a covering and lining epithelial function. And in terms of transport, regulating transport, again, this is not a primary function of the lining of the bladder. If anything, it is going to be preventing the transport of the urine, but in a protective fashion.
Now, moving on here, we have the capillary blood vessels and the capillary blood vessels are going to be lined with a very thin epithelium. And so that is going to be a lining epithelium. And, the capillary blood vessels are going to have a primary function in regulating transport. And so, the capillary blood vessel epithelium is going to be regulating the transport of nutrients and gases from the blood into the tissues, such as glucose being transported from the blood into the tissues and oxygen gas being transported from the blood into the tissues. And it will also regulate the transport of waste products from the tissues back into the blood, such as, for example, carbon dioxide gas being produced by the tissues.
It will regulate the transport of that CO2 back into the blood. Now in terms of secretion again, that's more of a function of glandular epithelial tissue, not lining epithelial tissue. Sensation is not really a primary function of capillary blood vessels. And protection, once again, probably not a primary function. It's more so regulating the transport, the exchange of materials between the blood and the tissues. Now, last but not least here, what we have is the salivary gland. And the salivary gland, it gives it away with this gland here.
It is going to be a glandular epithelial tissue. It's going to produce saliva in our mouth, which is going to have enzymes that help us break down our foods in our mouth. And, the salivary gland, of course, is going to have a primary function of secretion. And so, in terms of these other functions, this is not really the primary function of the salivary gland, it's mainly to secrete. And so this here concludes our brief example, and we'll be able to get some practice applying these concepts as we move forward.
So I'll see you all in our next video.