Caffeine has effects on conducting cells and contractile cells that are similar to those of NE. What effect would drinking large amounts of caffeinated beverages have on the heart rate?
A) heart rate would increase
B) heart rate would decrease
C) heart rate would stay the same but contraction would increase
D) heart rate would stay the same but contraction would decrease
Answer: A
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How are first-order neurons for proprioception characterized?
A. Small and unmyelinated B. Large and unmyelinated C. Large and myelinated D. Small and myelinated
What type of hormone can cross the plasma membrane to bind to a receptor in the cytosol or nucleus?
A.)amine hormones B.)hydrophilic hormones C.)hydrophobic hormones D.)protein hormones
Increased testosterone levels reduce the secretion of gonadotropin-releasing hormone from the anterior pituitary. This is an example of
A. inhibition of hormone release by humoral stimuli B. inhibition of hormone release by neural stimuli C. inhibition of hormone release by external stimuli D. inhibition of hormonal release by environmental stimuli E. inhibition of hormone release by hormonal stimuli
You go see a scary movie. By the end of the movie your heart is racing thanks to high levels of epinephrine in your bloodstream. You ate nothing during the movie, but your blood glucose level is likely
A. low due to the action of cortisol on blood glucose regulation. B. low due to an overall lack of nutrients. C. elevated due to the action of epinephrine on blood glucose regulation. D. elevated due to healthy post-absorptive state mechanisms. E. elevated due to the pasta meal consumed at home before the movie.