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Name the endocrine gland displayed in the image below.

Name the modified tissue over the iris that admits light into the eye.

Oxytocin is produced in the hypothalamus and is stored in which of the following glands?

Name the covering of the brain located immediately under the cranium indicated by the arrow.

Name the structure of the spinal nerve indicated by the arrow.

A ganglion is a swelling along a nerve containing the cell bodies of peripheral neurons.

Name the endocrine gland indicated by the arrow in the image below.

Name the muscle of the eye indicated by the arrow.

A nerve fiber is enclosed in a fibrous sleeve known as the perineurium.

The blood-brain barrier prevents harmful substances from entering the brain. Which structures create the blood-brain barrier (BBB)?