1. Integumentary System Podcast<br />Scene 1<br />Sunhee: Hi, I’m Sunhee.<br />Yoonjie: and I’m Yoonjie. Sunhee, let’s explain about why we sweat, shiver and get goose bumps, okay?<br />Sunhee: Okay, but first let’s explain a little bit about the integumentary system, or what is more commonly known as the skin.<br />Yoonjie: So, the skin is made of three layers; the epidermis, dermis, and the fatty layer.<br /> <br />Sunhee: The epidermis is the outer layer of skin made up of dead cells.<br /> <br />Yoonjie: And the dermis is the layer that has all of the nerve endings, sweat glands, and blood vessels.<br /> <br />Sunhee: And the last layer, the fatty layer, is basically made up of what its name says, fat.<br /> <br />Yoonjie: Okay, so now let's talk about the main topics of this podcast: goose bumps, sweating, and shivering.<br /> <br />Scene 2<br /> <br />Yoonjie: Sunhee, did you get any goose bumps when we were riding t-express?<br />Sunhee: Of course I did! It was so scary! I don’t see how you were able to wave!<br />Yoonjie: Ha Ha! I’m pro ;)<br />Sunhee: Wait; let’s get back onto the topic. Yoonjie, should we explain why we get goose bumps every time we are cold, scared, or shocked?<br /> <br />Yoonjie: Yes, of course we should, because that’s the first main point we’re going to be talking about. Anyways, when we get goose bumps, it is because at the base of each and every hair, there is a small muscle<br /> <br />Sunhee: …that causes our hairs to stand straight up. These small muscles are called, quot;
arrectores pilorumquot;
. The goose bumps we get are involuntary reaction, which means that we can’t control them. In other words, we can’t try to get goose bumps on purpose or try to not get them. <br />Yoonjie: Another example of our body’s involuntary reaction is blinking. No matter how much we try to keep our eyes from blinking, we will blink them sooner or later.<br /> <br />Scene 3<br /> <br />Sunhee: Now that we're done with explaining about why we get goose bumps, let's explain about why we sweat.<br /> <br />Yoonjie: Homeostasis is the root of sweating. Wait, what was homeostasis again?<br /> <br />Sunhee: Well, homeostasis is the body's ability to regulate its inner temperature and to keep it stable. Homo means the same, so homeostasis means “same temperature”. In simpler words, this means that homeostasis maintains the body's average temperature.<br /> <br />Yoonjie: Oh right! And when your body gets too hot, it tries to cool down by releasing sweat from your sweat glands that are located in the dermis, or the second layer of your skin.<br /> <br />Sunhee: And the moisture on your skin evaporates and leaves your skin feeling cool. <br />Yoonjie: That makes sense. Even when you are really hot during the summer, if you get wet in a water balloon fight, you feel much cooler, cooler in the temperature-wise way. <br />Scene 4<br />Sunhee: It’s so cold here *shivers* is the air conditioner on?<br />Yoonjie: Yeah, I think it is…. Anyways, our last topic has to do with your *problem with the temperature in here, so lets talk about that.<br />Sunhee: What is the topic again? <br />Yoonjie: It’s shivering! Although most people think we shiver because we are scared, it actually has nothing to do with us getting scared.<br />Sunhee: It’s actually an involuntary reaction. See, shivering is the opposite effect of homeostasis than sweating. We sweat to cool down…<br />Yoonjie: And we shiver in order to stay warm. Our brain is able to sense when we’re cold, even when we can’t feel it.<br />Sunhee: Our brain sends messages to our muscles to warm up, and our muscles contracts and expands quickly in order to warm up.<br />Yoonjie: Since the muscles flex so quickly, this looks like you are shivering because you move a tiny bit in a short period of time.<br /> <br />Scene 5<br />Yoonjie: So Sunhee, did you learn anything from today’s podcast?<br />Sunhee: Umm…oh yeah... I learned that there are three layers of the skin; the epidermis, dermis, and the fatty layer. I also learned that goose bumps are involuntary reactions caused by small muscles called “arrectores pilorum”<br />Yoonjie: Well, I learned the definition of homeostasis… or at least, I re-learned it… Anyways, one way your body tries to cool down is by releasing sweat from your sweat glands located in the dermis. <br />Sunhee: I also learned that shivering is your body’s opposite reaction to the temperature because you sweat to cool down and you shiver to stay warm. <br />Yoonjie: Well, I hope the viewers learned almost as much as we did from watching this podcast <br />Sunhee: Okay… So, BYE!<br />Yoonjie: Bye, this was our podcast on the integumentary system.<br />Bibliography:<br />Crystal, Garry. quot;
Why Do We Sweat?quot;
Why Do We Sweat? Wise Geek, 12 Feb. 2010. Web. 12 Apr. 2010. <http://www.wisegeek.com/why-do-we-sweat.htm>.<br />DeForest, Jessica. quot;
Common Prefixes, Suffixes, and Root Words.quot;
Michigan State University, 2000. Web. 3 May 2010. <https://www.msu.edu/>.<br />Galt, John. quot;
Why We Get Goose Bumps.quot;
Associated ContentAssociatedcontent.com. 15 Aug. 2007. Web. 19 Apr. 2010. <http://www.associatedcontent.com/article/342112/why_we_get_goose_bumps.html?cat=9>.<br />Wallace, O. quot;
Why Do We Shiver?quot;
WiseGEEK: Clear Answers for Common Questions. Web. 19 Apr. 2010. <http://www.wisegeek.com/why-do-we-shiver.htm><br />