Which hormone stimulates Leydig cells to secrete testosterone?
a) GnRH
b) LH
c) Inhibin
d) DHT
e) None of these choices
b
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The rate-limiting reaction in a metabolic pathway is one that occurs at a faster rate than the other steps in the pathway
Indicate whether the statement is true or false.
The hypothalamus is the highest integrative center in the hierarchical chain of command in endocrine control
Indicate whether the statement is true or false
Which of the following is arranged in correct order from the most complex to the simplest?
A) cellular, tissue, molecular, system, organ, organism B) molecular, cellular, tissue, organ, system, organism C) tissue, cellular, molecular, organ, system, organism D) organ, organism, molecular, cellular, tissue, system E) organism, system, organ, tissue, cellular, molecular
What is the mechanism called that pushes blood from the lower veins to the chest veins due to a pressure difference?
a. chest flow b. chest gradient c. chest pump d. respiratory pump e. respiratory gradient