The Endocrine System

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This endocrine gland would most be affected by a diet deficient in iodine.

A very high level of calcium in the blood suggests a malfunction of the

This gland secretes melatonin for sleeping.

After a hormone enters the bloodstream, it is transported throughout the body, but the hormone affects only certain cells. The reason only certain cells are affected is that these cells have specific

Gland A releases a hormone that makes gland B release estrogen. Gland A is most likely the

This region of the brain functions as an endocrine gland by producing hormones that influence the activities of the pituitary gland.

This gland secretes numerous hormones that directly regulate the activities of several other endocrine glands and tissues.

This hormone is responsible for fight or flight.