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        | Organized grooups of tissues which use materials from the blood or lymph to make new compounds called hormones. |  | 
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        | The secretions from the gland must go through a duct. The duct carries the secretion to a body surface organ. |  | 
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        | Special group of cells that secrete the hormone insulin directly into the bloodstream, |  | 
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 | Definition 
 
        | Occurs when there is a drop in the level of a hormone. |  | 
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        | A tiny structure about the size of a grape. |  | 
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 | Definition 
 
        | Responsible for growth and development. |  | 
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 | Definition 
 
        | Stores hormones produced by the hypothalamus. |  | 
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 | Definition 
 
        | A butterfly-shaped mass of tissue located in the anterior part of the neck. |  | 
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        | Term 
 | Definition 
 
        | Produced and secreted by the thyroid gland. |  | 
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        | Term 
 | Definition 
 
        | Is both an endocrine gland and a lymphatic organ. |  | 
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 | Definition 
 
        | A powerful cardiac stimulant. |  | 
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 | Definition 
 
        | Located behind the stomach and functions as both an exocrine and an endocrine gland. |  | 
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 | Definition 
 
        | A small pinecone-shaped organ attached by a slim stalk to the roof fo the third ventricle in the brain. |  | 
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 | Definition 
 
        | Hormone produced by the pineal gland. |  | 
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 | Definition 
 
        | An overgrowth of the long bones leading to excessive tallness. |  | 
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 | Definition 
 
        | An overdevelopment of the bones of the face, hands, and feet. |  | 
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 | Definition 
 
        | A deep drop in the amount of ADH, which causes an excessive loss of water and electrolytes. |  | 
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        | Term 
 | Definition 
 
        | Enlargement of the thyroid gland. |  | 
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 | Definition 
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        | Term 
 | Definition 
 
        | A condition in which the thyroid gland does not secrete sufficient thyroxin. |  | 
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 | Definition 
 
        | A lack of mental and physical growth, resulting in mental retardation and malformation. |  | 
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 | Definition 
 
        | Hypofunctioning of the parathyroid glands. |  | 
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 | Definition 
 
        | Hypofunctioning of the adrenal cortex. |  | 
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 | Definition 
 
        | Low blood sugar; insulin shock. |  | 
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        | Term 
 | Definition 
 
        | High blood sugar; diabetic coma. |  | 
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