Cells that respond to peptide hormones usually do so through a sequence of biochemical reactions involving receptor and kinase activation. In order for cells to respond, it is necessary for first and second messengers to communicate. This is possible because ________.
A) peptide hormones always enter the cell membrane and elicit a response without assistance from other messengers
B) hormones alter cellular operations through stimulation of a gene directly
C) G protein acts as the link between first and second messengers
D) the hormone receptor complex moves into the cytoplasm as a unit
C) G protein acts as the link between first and second messengers
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The kidneys make the final enzyme for synthesis of the hormone _________, which causes increased calcium absorption in the small intestine
Fill in the blank with correct word.
The following is a list of the blood vessels that carry blood to the kidney: 1. afferent arteriole 2. arcuate artery 3. interlobar artery 4. renal artery 5. glomerulus 6. cortical radiate artery 7. efferent arteriole 8. peritubular capillary The proper order in which blood passes through these vessels is
A) 4, 6, 2, 3, 1, 5, 7, 8. B) 4, 3, 2, 6, 1, 5, 7, 8. C) 4, 3, 2, 6, 7, 5, 1, 8. D) 4, 6, 2, 3, 7, 5, 1, 8. E) 4, 3, 6, 2, 1, 5, 7, 8.
_____ is the arrest of bleeding from a broken blood vessel
a. Hemostasis b. Homeostasis c. Homeopathy d. Homeotics e. None of these.
Identify the highlighted structure.
