Which statement relating to endocrine signaling is false? Histamine is a paracrine Hormonal signals enter the bloodstream, so hormones influence all cells with which they come in contact O Hormones are released to the extracellular fluid and then diffuse into the bloodstream. Some endocrine cells exist as single cells within a tissue. Hormones, paracrines, and autocrines bind to receptors OOO

Which of the following is True about the STAT signaling cascade? O It amplifies signal for TGF-B family of Growth Factors O It amplifies signal for cytokine receptors O It amplifies signal for receptor tyrosine kinases O It amplifies the signal for Notch

Which statement correctly identifies how a lipid-soluble hormone that diffuses from the blood and through the interstitial fluid identifies which cells in the tissue to act upon? O The cell closest to the diffusion site. O The presence of a receptor located in the cytoplasm or nucleus specific to the hormone in cells. O The presence of a receptor embedded in the plasma membrane of target cells. O The presence of a channel protein embedded in the plasma membrane for the lipid-soluble hormone to diffuse through. Save for Later 80 F3 F4 F5 F6 8 F7 Attempts: 0 of 3 used F8 F9 Submit Answer F10

How is hormone binding to its receptor more like an allosteric regulator binding to an enzyme than a substrate binding to an enzyme?

Hormones are chemical signaling molecules produced by specialized cells and transmitted via the circulatory system to all other cells in the body. Which of the following describes a condition that needs to be met for a target cell to re- ceive the signaling molecules? A B с D The size and shape of the target cell needs to be similar to that of the cell that secreted the hormone. The location of the target cell needs to be within the local region of the cell that secreted the hormone. The target cell needs to have sufficient ATP to transport the hormone into the cell. The cytosol of the target cell has to have receptors that recognize and bind the hormone.

In comparison to protein hormones, steroid hormones: (Select all that apply). O Have a longer half-life O Have a shorter half life O Are water-soluble O Are lipid-soluble O Can cross the cell membrane O Cannot cross the cell membrane Can interact with receptors on the cell surface O Can interact with receptors in the nucleus or cytoplasm

Which is NOT true of steroid hormones? O They can not diffuse through the lipid bilayer of a membrane. They include hormones like testosterone and estrogen. O They bind to receptor proteins inside target cells. When they bind with receptors, specific genes are activated resulting in cell char ↑ The mineralocorticoid called aldosterone is produced by the adrenal cortex and it stimulates the reabsorption of sodium ions in the nephrons renal cortex and it increases blood pressure adrenal medulla and it increases blood glucose levels renal medulla and it stimulates the reabsorption of sodium ions in the nephrons C 31 6 O

mo Fill in this table for cortisol, aldosterone, testosterone, estradiol, parathyroid gland hormone, calcitonin, calcitriol, thyroxine. Columns 6,7,8 fill in accordingly Type of Receptor/ location in a cell Hormone Factors to control /class according chemical nature/ secretion place 1 secretion? Fstimulation Fsuppression (- ) 2 3 G-Protein? Secondary Target tissue? Controlled messengers? pathway (P)? P(+)- stimulated: P(-)- suppressed: 5 6 7 Biochemical Index in the blood plas-ma that is changed after secre- tion of the hormone

Does the inhibition of TRH via negative feedback occur after the secretion of TSH or after the secretion of IGF? Ik that inhibition of TRH via negative feedback usually occurs after TSH in the thyroid pathway. But TSH and GH Are both secreted from the anterior pituitary gland so idk what to do?

↑ @ Which statement is true? exocrine glands secrete chemical messengers called hormone directly in the blood stream an endocrine response is faster than a nervous response When a hormone binds to a specific receptor it triggers a series of reactions inside the cell O Steroid hormones bind to a receptor in the plasma membrane 11 Which of the following statements about the relationship between the nervous and endocrine systems is NOT correct? ↑ Hypothalamus controls a part of the endocrine system called the pituitary gland. Hypothalamus produces ADH Neurons of the sympathetic nervous system stimulate the production of hormones from the adrenal gland. None of these. с O % 4¢ 5p #/$ 3 £ 31 acer Oll MEAN A 6- & 18⁰ O 71 * 00 8² O 93 1 poi ✓