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Endocrine: biochemistry, secretion and transport of hormones
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Reply# 14 Quote
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3 years ago

THANKS  Grin Congratulations

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Reply# 15 Quote
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3 years ago

I'm pretty sure these are right: (1-3 & some of 4)

1.   Place the following hormones into one of the three categories of hormones (peptides, amines or steroids): T4 (thyroxin), estradiol, norepinephrine, insulin, aldosterone, glucagon, cortisol, growth hormone, T3 (triiodothyronine), epinephrine, testosterone and vasopressin (ADH).
Peptides   Amines   Steroids
Insulin
Glucagon
   Epinephrine
Norepinephrine
T3 (triiodothyronine)
T4 (thyroxin)
Growth hormone   Cortisol
Estradiol
Aldosterone
testosterone and vasopressin (ADH)

2. Peptide hormones are synthesized as large precursor hormones called preprohormones. The hormones (or prohormones) are stored in the rough ER and released from the cell by exocytosis. Do peptide hormones require a carrier in the blood stream? No.
3.   Catecholemines are produced in the medulla of the adrenal gland and are classified as hormones since they are derived from tyrosine. Stimulation of the chromaffin cells causes an influx of calcium ions, which causes the vesicles to merge with the plasma membrane and release the hormone by exocytosis. Are catecholemines water-soluble or lipid-soluble? Water-soluble.
4.   Thyroid hormones include two molecules called T4 (thyroxine) and T3 (triiodothyronineand). T3



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Reply# 16 Quote
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3 years ago

Awesome Thanks!



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Reply# 17 Quote
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3 years ago

THANKS SO MUCH!!



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Reply# 18 Quote
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3 years ago

wow so very much aprreciated. helped alot.  Tongue



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Reply# 19 Quote
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3 years ago

Thanks a lot



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Reply# 20 Quote
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3 years ago

thanks



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Reply# 21 Quote
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3 years ago

this really helps me on my homework Smile



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Reply# 22 Quote
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3 years ago

awesome!



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Reply# 23 Quote
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3 years ago

 Congratulations Thank you! Very helpful!!!



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Reply# 24 Quote
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3 years ago

Thanks so much!



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Reply# 25 Quote
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3 years ago

Thanks! This is awesome Smile



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Reply# 26 Quote
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3 years ago

Please answer number 7, 8, and 10 on that same page. Thank you

7. Two examples of hormonal regulation of hormone secretion. 1) the negative feedback of T3 and T4  to decrease ----- levels: and  2) the negative feedback of cortisol which dereases both ----- and ----- levels.

8. Besides increased levels of plasma glcose and amino acides (humoral regulation), increased levels of both ----- (hormone)  and the ------ nervous system increase plasma insulin levels.



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Reply# 27 Quote
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3 years ago

Please update us with the answers Happy



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