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Butoxors [25]
3 years ago
5

Write an esaay on origin of species​

Biology
1 answer:
LenKa [72]3 years ago
7 0
Do you have the options?
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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
If you believe a giraffe's neck evolved slowly, steadily, and constantly over many generations, which evolutionary theorist woul
seraphim [82]

Charles Darwin is your answer

hope i helped!
6 0
3 years ago
Read 2 more answers
Why did Gregor Mendel study P plants
PilotLPTM [1.2K]

Answer: They are easily identifiable.

Explanation:

There are wrinkled pods, smooth pods, white flowers and things like that that are easy to see right away.

7 0
3 years ago
A learning process that can occur only during a limited period of the individual's development is called _____.
likoan [24]
This process is called as imprinting. It occurs at a particular stage of life and is, therefore, a phase-sensitive learning process. It can be of many types, including filial imprinting, where an offspring gains some of its behavioral characteristics from the parent, or sexual imprinting, through which desirable characteristics of a mate are recognized by a young animal. 
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2 years ago
Which structures shown in the Figure make up the ADP molecule?
Y_Kistochka [10]
Answer: A,B and C

Explanation
6 0
3 years ago
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