Use the diagrams above to answer the following questions.Identify which diagram represents a cell that produces a myelin sheath in the central nervous system.

What is the functional unit of compact bone? (Module 4.14C)

Use the diagram pictured above to answer the following questions.Identify the letter that indicates the gaps between Schwann cells that are known as myelin sheath gaps (nodes of Ranvier).

The ducts of mammary glands are made of ________ epithelium.

What do a mesothelium and an endothelium have in common?

Astrocytes perform all of the following functions except

Of the following, which is the only structure that is in the PNS, as opposed to the CNS?

Which letter represents a oblique cut?  

  What type of epithelium can be seen in this image (be specific)? epithelium Name a location in the body where this epithelium can be found? Which cells are most relevant in classifying this tissue? What is the function of this tissue?

Which type of muscle tissue regulates blood vessel diameter? (Module 4.17A)