Down-regulation of a target cell can occur in response to
A. signals from the posterior pituitary.
B. signals from antagonistic hormone products.
C. prolonged increase in the level of a hormone.
D. prolonged decrease in the level of a hormone.
Answer: C
You might also like to view...
A 65-year-old patient came to the emergency room with complaints of severe heartburn unrelieved by taking a "large handful" of antacids. Would you expect the pH to be high or low? Explain why.
What will be an ideal response?
Postganglionic sympathetic fibers could be located in:
a. a dorsal ramus b. a ciliary ganglia c. the wall of the heart d. the adrenal medulla
The procedures manual outlines the employee dress code
Indicate whether the statement is true or false
Long-term potentiation
a. is to increased responsiveness to mild stimuli following a strong or noxious stimulus b. is an increase in strength of existing synaptic connections in pathways involved in initial storage of declarative information following brief periods of stimulation c. involves a retrograde chemical messenger from the postsynaptic neuron influencing the presynaptic neuron d. exhibits characteristics a and b e. exhibits characteristics b and c