The structure labeled 4 is known as the [word1] [word2]. Note: Use only one word for each blank space. 

In the image below, the structure labelled 2 is known as the [word1] [word2]. Note: Use only one word for each blank space. 

In the image below, the structure labeled XI is known as the [word1] [word2] cranial nerve. Note: Use only one word for each blank space. 

In the image below, the vagus nerve is labelled by the roman numeral ______. Note: Use only the specific roman numeral for each blank space.

The structure labeled 4 below shows the lumbar plexus.

In the image below, the muscle labelled 6 is known as the [word1] [word2]. Note: Use only one word for each blank space. 

Buffer solutions stabilize the pH when small amounts of acid or base are added. What property of buffers makes them especially important in chemical and biological systems?

Ionic solids are generally poor conductors in the solid state but may conduct under certain conditions. Which type of solid conducts electricity when molten but not in its crystalline solid form?

The third law of thermodynamics establishes a reference point for entropy. What is the entropy of a perfect crystalline substance at absolute zero (0 K)?

Nylon is a synthetic polymer used in fibers. Which type of polymer is nylon classified as?