Many protein hormones remain at the cell surface and act through a second messenger, which is usually a substance known as ___________.

Question

Quizplus · Accepted Answer

Many protein hormones remain at the cell surface and act through a second messenger, usually a substance called adenosine monophosphate (AMP). 
The pituitary gland has two major portions, the anterior lobe and the posterior lobe. The anterior lobe is known as the adenohypophysis, and the posterior lobe is known as the neurohypophysis.
The infundibulum is the stalk that attaches the pituitary gland to the hypothalamus.

Many Protein Hormones Remain at the Cell Surface and Act