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?
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
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