A gradient exists:
a. When heat is concentrated in one area of the body
b. When more of a substance is located in one place than in another
c. When there is higher pressure in one place than in another
d. All of the above are correct
e. None of the above are correct

Question

A gradient exists:

a. When heat is concentrated in one area of the body

b. When more of a substance is located in one place than in another

c. When there is higher pressure in one place than in another

d. All of the above are correct

e. None of the above are correct

Accepted Answer

Hi, everyone. Welcome back. Here's our next problem. Sweating and shivering are mechanisms of the body to adapt to differences in the A concentration gradient. B temperature gradient, C pressure gradient or DPH gradient. Well, we're all probably pretty familiar with these mechanisms and how sweating is our body's response to being too hot and shivering. Our body's response to being too cold. So when there's too steep, a temperature gradient between our bodies and the outside environment, our body uses sweating and shivering. So choice B temperature gradient is what we're looking at. But of course, sweating causes moisture on the skin which then the evaporation that results cools the body down. Shivering causes heat generation through the muscle contractions which warms the body up. Now, it's important to note when we talk about a gradient gradients, we talk about how steep they are or the gradient has increased or decreased. We don't mean the temperature increasing or decreasing. We mean the difference between the body temperature and the outside environment. Our body can tolerate a certain window of difference, a certain gradient. But when we get outside of that window, so the gradient increases by being much hotter or much colder than the body temperature. But sweating and shivering are the two mechanisms that deal with this increased temperature gradient, whether too hot or too cold. So we can look at our other answer choices. Choice a concentration gradient. Well, this is important for our body to adapt to because it's important for our cells to maintain certain concentration ingredients between their inside and outside environment. But that's not controlled by sweating and shivering. There's a lot of different mechanisms that affect concentration gradients. Uh The kidneys most often deal with this by reabsorbing or secreting different ions but not gonna be handled by sweating and shivering. So not our answer. So I see pressure gradient. Well, this is especially important in our lungs. So are the whole mechanism of breathing the expansion and contraction of the thoracic cavity causes pressure to drop or rise in our thoracic cavity which draws air in or expels it or the pressure gradient that involves the partial pressure of oxygen in the outside air being higher or lower than the partial pressure of oxygen in the blood that allowing gas exchange. So pressure gradient also super important but sweating and shivering are not the mechanisms to deal with that. And then finally, choice DPH gradient. Again, very crucial. You don't want the body's ph gradients being uh affected, being too extreme in terms of the body, needing to be in a very narrow ph range. And that is also primarily handled by the kidneys and the respiratory system, carbon dioxide can combine with water and form carbonic acid in the blood when it dissolves. And so a higher level of carbon dioxide will make the blood more acidic. A lower level makes the blood more basic. So by increasing or decreasing the respiration rate, our body can help control the PH level. Therefore adapting to differences in the ph gradient, but again, wouldn't be sweating and shivering. So cross that out. So once more sweating and shivering are mechanisms of the body to adapt to differences in choice. B the temperature gradient. See you in the next video.

A gradient exists:
a. When heat is concentrated in one area of the body
b. When more of a substance is located in one place than in another
c. When there is higher pressure in one place than in another
d. All of the above are correct
e. None of the above are correct

Verified video answer for a similar problem:

Key Concepts

Gradient

Heat Concentration

Pressure Gradient

A gradient exists:a. When heat is concentrated in one area of the bodyb. When more of a substance is located in one place than in anotherc. When there is higher pressure in one place than in anotherd. All of the above are correcte. None of the above are correct

Verified video answer for a similar problem:

Key Concepts

Gradient

Heat Concentration

Pressure Gradient

A gradient exists:
a. When heat is concentrated in one area of the body
b. When more of a substance is located in one place than in another
c. When there is higher pressure in one place than in another
d. All of the above are correct
e. None of the above are correct