Which of the following hormones are not transported to the pituitary gland via t

Question

Which of the following hormones are not transported to the pituitary gland via the hypothalamic-hypophyseal portal system? A. CRH B. ACTH C. TSH D. TRH E. Both B and C 1. 2. If you were to take the temperature of everyone in class, assuming no one is sick, you would find that not everyone has a temperature of 98.6°F. Which statement below best explains your findings? A. The measuring instrument is not working properly; everyone has a set point of 98.6°F B. M about the set point due to negative feedback control. C. If the subject is not at 98.6°F then he or she is in a disease state D. An error signal has occurred and a positive feedback response has put the persons in question out of the normal range of function. ost regulated variables, such as temperature, fluctuate continuously and oscillate Their temperature is no doubt higher than 986 because a positive feedback loop ha increased the subjects' metabolism. The main difference between the modes of action of peptide hormones and steroid hormones is that A. Peptide hormones bind to intracellular receptors whereas steroid hormones bind to receptors on the cell surface B. Peptide hormones bind to receptors in the nucleus whereas steroid hormones bind to receptors in the cytosol C. Peptide hormones bind to receptors on the cell surface whereas steroid hormones ac as second messengers D. Peptide hormones bind to receptors on the cell surface whereas steroid hormones bi to intracellular receptors E. There are no differences; both act by binding to receptors on the cell surface 3· 4. A fat cell responds to the presence of the hormone epinephrine by increasing cAMP production, which leads to the catabolism of both glycogen and fat. What is the most likely explanation for this phenomenon? Epinephrine is binding to two types of receptors in the plasma membrane. B. The activated receptor complex stimulates production of two different second messengers C. Cyclic AMP directly stimulates two kinds of enzymes. D. Cyclic-AMP dependent protein kinase activates two different types of enzymes

Explanation / Answer

1.A.CRH.

CRH is corticotropin releasing harmone which is a peptide harmone released during stress conditions.

2.B. Most regulated variables such as temperature fluctuate continuously and oscillate about the set point due to negative feedback control.

3.C. Peptide harmones bind to receptors on cell surface where as steroid harmones acts as secondary messengers.

Peptide harmones bind to receptors on the cells they are effecting and includes a cascading effect.

4.B. The activated receptor complex stimulates production of two different secondary messengers.

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