Identify the cranial nerve root indicated by the letter C.

What muscle originates on the corcacoid process and glenoid fossa of the scapula?

On what joint does the highlighted muscle act?  

 Identify an origin of the highlighted muscle.

What is the action of the muscle at the tip of the arrow?  

 Does this muscle flex or extend the arm at the elbow?

  Using the information provided in the micrograph, where in the nervous system is this neuron located?

 Identify the structure indicated by the letter B.

What is the main action of the soleus?

Gyri and sulci increase the surface of the brain.