What is the main role of the pigment molecules?

To test for the _______ nerve, rotate your head and shrug your shoulders against resistance.

Identify the labeled structure on this figure.

Give the origin and course of the labeled cranial nerve.

Identify the labeled structure on this figure.

All of the following are effects of the parasympathetic nervous system, EXCEPT:

To test for the _______ nerve, stick out your tongue and look for any deviation in position from center.

Identify the structure labeled in this figure of the sheep dissection.

Identify the labeled nerve on this model.

EXTRA CREDIT: What is the name of the type of symbiosis where there is an optional cooperation where both species benefit, but can grow independently?