1. The environmental stress of cold can alter homeostasis because of the effect it puts on our bodies natural temperature (98.6 degrees). The human body feels cold so it begins to constrict and begins pumping blood to the organs. The blood flow then slows down because more blood is going to the organs in order to cancel out the cold, your extremities begin to slow down and become bloodless and ice cold.
2. Short Term: Shivering is considered the short term of feeling/being cold and gives a length of warmth to the individual.
Facultative - Facultative adaptation fights the cold by allowing those who live in colder climates withstand wind chill and also have larger hearts that pump more blood when their blood vessels constrict.
Developmental - Cultures have some fat tissue in their bodies, such as the cheek area, to keep the cold out. This can pertain to arctic animals and how they have fatty tissues to regulate heat. Some cultures grow thicker hair as well to keep cold out as well.
Cultural - Cultural adaption fights against the cold by wearing thick clothes through the usage of fur covered jackets and sweaters. Without these items, our bodies cannot survive freezing temperatures.
3. Benefits of studying human development across a variety of different climates progresses technological developments. An example of this reason would be developing the oxygen mask in order for people living in higher altitudes to breathe with ease.
4. Race is not the best way to better our understanding in human diversity because race is a human construct. Race, in most people's minds, is the color of someone's skin, their facial, or body features. Environmental influences is a very important impact on race because due to different environmental locations, this effects how each race takes on certain climates. For example, Africans tend to have darker pigment skin due to the harsh heat they're located in. This dark pigment allows them to withstand heat more than those with lighter pigment.
I really enjoyed your post and the story line you created with your photos, Jordan.
ReplyDeleteSince I commented on the climate factor for another classmate's post, I will comment on the last part of your post which deals specifically with analyzing race and the impact on climate assimilation. I agree, it is not advantageous to look at race as a leading factor in understanding human diversity in this situation. But I do think race often is a common denominator. Often body size and the shape of the body is the physiological response to the climate. Race plays a role in that of the Tibetans who are born and raised in the cold climate and their race stay on and assimilate generation after generation. So maybe race does play a role, but not the only role.
Thank you again for your post.
Sponge bob square pants! *lol* I love your pictures. I seen Shivering as a way to keep warm, but I didn't write about it. I didn't write about it because Shivering doesn't keep me warm. I guess it just keeps you a little warm without you knowing it.
ReplyDeleteBut nice post! =-) I enjoyed your pictures and everything.
Love the images! But how in the world does it snow under the ocean? :-)
ReplyDeleteGood description of the cold stress.
For your facultative adaptation, you are actually identifying a developmental trait (more muscular heart), but your explanation would be maladaptive. A stronger heart, pumping against increasingly restrictive vessels would raise blood pressure dangerously. This isn't an accurate description of what happens. A facultative trait is one that can occur in a person's lifetime and can return to the pre-stress expression but turning on or off the appropriate genes. An example of this is vasocontriction and also alternating vasoconstriction/vasodilation.
You mention the fatty cheeks, but why just the cheeks? What about the rest of the body? Did you review the information in Blackboard on the parallels between body shape and the environment? What are Bergmann and Allen's rules?
Okay on the benefits of the adaptive approach.
"Race is not the best way to better our understanding in human diversity because race is a human construct."
Exactly. Well said.
Great post! I enjoyed your pictures! Very creative. I did mine on the same thing, we actually had a very similar post. I did not think about the larger heart though. Interesting points!
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