It is considered to be part of the gastrointestinal system since it produces digestive enzymes. The pancreas is a very important organ in the digestive and the circulatory systems that helps to maintain our blood sugar levels. A collection of endocrine glands makes up the endocrine system: the pituitary (anterior and posterior lobes), thyroid, parathyroid, adrenal (cortex and medulla), pancreas and gonads.Įndocrine glands in the human head and neck: The endocrine system is the system of glands, each of which secretes different types of hormones directly into the bloodstream (some of which are transported along nerve tracts) to regulate the body. thyroid: One of the largest endocrine glands, it is responsible for the secretion of thyroxine which controls how quickly the body uses energy, makes proteins, and is sensitive to other hormones.Įndocrine glands are ductless and release their secretions directly into the intercellular fluid or into the blood.adrenal gland: This gland is responsible for releasing hormones in response to stress through the synthesis of corticosteroids, such as cortisol and catecholamines (epinephrine (adrenaline) and norepinephrine), as well as the production of androgens.\)Įndocrine glands are glands that have no duct and release their secretions directly into the intercellular fluid or into the blood.
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