1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eva8 [605]
2 years ago
13

A) What did scientist Calderón-Garcidueñas find when she performed MRI

Biology
1 answer:
Natasha2012 [34]2 years ago
5 0
Answer: the brain scans showed that there were areas of damage in the brains of all but one of the Mexico City kids. The damage was caused by air pollution.
You might be interested in
Which organelle controls when and what proteins are made? *
Tanzania [10]

Answer: B. Nucleus

Explanation:

5 0
3 years ago
How can prokaryotic cells be smaller than eukaryotic cells and still carry on all the functions of life?
user100 [1]
Thcfcxxfxfxfxfxfxrxesdtfghbvcxdfgvcxdfvcxdfgvcdfgv
4 0
3 years ago
Which hormone is secreted during periods of stress and is related to increased risk of disease?
gulaghasi [49]

Stress is a condition that tends to disturb the equilibrium of the individual with the environment. There are hormonal changes which occur during stress and have their impact in the endocrine system.

Reaction to stress is associated with increased hormone secretions of several hormones such as glucocorticoids, growth hormone, prolactin and catecholamine. The elevated levels of these hormones increase the risk of infections and also decrease the innate immunity as well as increase the autoimmune responses.

There are endocrine disorders related with the increased hormone secretion during stress conditions such as psychosexual dwarfism, obesity, Grave’s disease and gonadal dysfunction. The effect of increased secretion of the hormones is increase in mobilization of energy and adaption of the individual to current circumstances.

Activation of the pituitary adrenal axis is an important and dominant response due to stress. On stimulation of the pituitary adrenal axis results in hypothalamic secretion of the CRF (corticotrophin-releasing factor) which further stimulates the pituitary to ACTH, 3-endorphin and 8-lipotropin.

During stress, the plasma levels of these hormones increase up to five times.

The stimulation of the pituitary adrenal axis is also associated with the release of hormone catecholamine. The increased level of catecholamine leads to increased skeletal muscle flow of blood increased cardiac output and glucose levels, bronchiolar dilation, cutaneous vasoconstriction etc.

Acute stress releases vasopressin rapidly from the Para ventricular nucleus of hypothalamus together with corticotrophin releasing hormone.

During stress there is also suppression of gonadotropins and gonadal steroidal hormones which disrupt the normal menstrual cycle and prolonged stress can also lead to impairment of reproductive functions.

Thyroid functions are down regulated during stress conditions. T3 and T4 levels decrease whenever there is any stress condition.

The growth hormone level increases due to physical stress and prolactin level may increase or decrease depending on the conditions of regulatory environment locally.

4 0
3 years ago
Need help aspa!!!!!!!
WINSTONCH [101]

Answer:

a design is how something is and how it looks. and a method is how you could solve something like a math problem.

Explanation:

im sorry if this does not help you.

4 0
3 years ago
What are the enzymes called when they are at low temperature?
Dennis_Churaev [7]

Answer:

They are called psycrophiles or cryophiles.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Two genes, A and B, are located 30 map units apart. A mating between an individual homozygous dominant for both traits and one h
    14·1 answer
  • Nuclear accidents are among the most feared disasters. The radioactive materials released can contaminate land and water, making
    12·2 answers
  • A forest contains red oak sugar maple and white spruce trees. Is this forest considered a population
    6·2 answers
  • Why is it important that your heart rate returns to resting levels as quickly as possible?
    13·1 answer
  • What was one characteristic of a New England colonial town?
    8·1 answer
  • The seeds of ___________ are protected in some type of fruit.<br>A.angiosperms<br>B.gymnosperms
    14·1 answer
  • Which of the following statements BEST describes ASEXUAL reproduction?
    7·1 answer
  • Which characteristics do all bony and jawless fish have in common? Check all that apply.
    5·2 answers
  • Nancy is a forensic scientist. she isolated DNA from the hair that she collected at the crime scene. however, the DNA extracted
    13·1 answer
  • Select the correct answer. In the excerpt from jack london's "the human drift", the thesis statement is expressed in these sente
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!