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Name the structure of the external ear indicated by the arrow.

Name the circular structure indicated by the arrow that opens from the middle ear into the inner ear.

Which of the following is not true of luteinizing hormone?

The Medulla oblongata extends from the foramen magnum up to the midbrain.

Name the structure of the brain highlighted in yellow.

Thyrotropin-releasing hormone (TRH) promotes the secretion of Thyroid-stimulating hormone (TSH) that targets the thyroid gland to produce _________________ and ________________. 

Name the surface structure of the tongue indicated by the arrow.

Sensation is the subjective conscious experience resulting from the interpretation of a stimulus such as pain.

Name the endocrine gland displayed in the image below.

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