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vitfil [10]
3 years ago
12

The suprachiasmatic nucleus of the ________ is responsible for regulating your circadian rhythms. In this way it plays a very im

portant role in your sleep-wake cycle.
Biology
1 answer:
Natalija [7]3 years ago
3 0

Answer:

tiny region of the brain in the hypothalamus, situated directly above the optic chiasm.

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4. The medium ground finch and the cactus finch are adapted to consume different types of foods. Can you think of a situation in
Sedaia [141]

Answer:

Long beaks of medium ground finches allows them to opt for alternate sources of food in times of extremities while this is not the case with the cactus finches.

Explanation:

The medium ground finches have larger beaks and thus apart from small seeds they can also break open the large seed. In case if the small seeds get scarce, a medium ground finch can still survive by taking advantage of feeding on alternate source of food but small beaked birds such as cactus finches shall die out of starvation.

This adaptation of medium ground finches gives it a survival advantage over the cactus finches

4 0
3 years ago
Read 2 more answers
Imagine you are investigating the case of a young man who seems not to respond to stressful situations the same way most people
anzhelika [568]

Answer:

The answer of the human body to stress, and stressful situations, including to conditions that may trigger the stress response of the body, is a pretty complex one involving the nervous system as a whole, and the adrenal glands, which are responsible for producing two of the most important stress-related hormones. These hormones: glucocorticoids and corticoids (cortisol), will in turn affect all body systems in different manners to produce the necessary effects, to respond to the perceived "threat".

In essence, we have a pathway from our brains, to our adrenal glands, known as the hypothalamic-pituitary-adrenal (HPA) axis. In this axis, several genes that are geared towards stress responses activate (CRHR1 and CRHR2, among others) and produce CRH (Corticotropic releasing hormone), which in turn is directly related with stimulating the production of cortisol when there is stress. However, because our bodies are not meant to be in a constant state of alertness and preparation, because the different organs of the body are negatively affected, there are also pathways that will turn off this response and lower the stressful production of cortisol.

In this particular person, although he has been exposed to the same stressor as the others, he does not have precisely the same reactions to it as the others. It is important to note one thing here, and that is, that the stressor offered to these people were videos of stressful situations, and what is known about the stress response is that one vital part of it is visual exposure to different factors, including light, and images. These exposures cause the HPA axis to initiate a response through CRH production. However, it seems that in this young man, although most of the responses are present, not all of them are. So one solution could be that he has a mutation in his genes in his HPA axis, and therefore CRH is not being produced in enought levels to stimulate sufficient levels of cortisol production. However, there are also other genetical reasons why, and these could be many.

6 0
3 years ago
Poor diagnostic reasoning and illusory correlations have been documented in all of the following cases EXCEPT individuals with c
belka [17]

Answer:

All of the above individuals demonstrate these errors

Explanation:

7 0
3 years ago
The structures present on the underside of leaves of terrestrial plants that help reduce transpiration are?​
inysia [295]

Answer:

They are called Stomatas.

Explanation:

A waxy cuticle covers all aerial surfaces of land plants to minimize water loss. These leaf layers are clearly visible in the scanning electron micrograph. The numerous small bumps in the palisade parenchyma cells are chloroplasts.

You can find this information here: https://courses.lumenlearning.com/wmopen-biology2/chapter/plant-structures/#:~:text=Stomata%20on%20the%20leaf%20underside,palisade%20parenchyma%20cells%20are%20chloroplasts.

6 0
2 years ago
One way that the quality of scientific information is evaluated is that it is reviewed by ____​
Irina-Kira [14]

Answer: The process of peer-review starts with a scientist submitting his article to a peer-review journal. After that, the quality of the article is evaluated by the panel of the academic reviewers or referees in that field

Explanation:

3 0
2 years ago
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