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What space is labeled with an arrow?

What endocrine organ is the arrow pointing at?

The arrow is pointing at what type of glial cell?

What endocrine organ is shown here?

What is this portion of gray matter called?

What is one characteristic that allows you to distinguish this muscle as skeletal muscle? Use only one word in your description.

This image shows the structural unit of striated muscle. What is the functional unit of striated muscle called?

This is an image of the spinal canal. What fluid is produced by the glial cell lining the spinal canal?

What structure is labeled B?

Assuming that this process is the axon, what portion of the axon is the arrow pointing at?