Parasympathetic fibers to the salivary gland are carried through the facial nerve.  

The structure pictured here, including a hydrophilic head and hydrophobic tails, is formed by:    

Which of the following receptors respond to acetylcholine?  

When pain arises in the viscera but is perceived as somatic in origin this is an example of:  

Please select the cholinergic fiber(s):  

Which anatomical division of the nervous system functions in integration and control?                 [a]    Which anatomical division of the nervous system serves as the communication lines?                 [b]  

An autocrine secretion acts on ____a paracrine secretion acts on_______.  

Adrenal medulla (endocrine) secretes mostly ___________.  

  ______________ are intercellular messengers which travel in the blood stream and are secreted by endocrine cells.

A certain drug decreases heart rate by blocking a receptor on cardiac pacemaker cells. This drug probably binds to ________ receptors.