The endocrine system and its widely scattered glands secrete hormones that diffuse from the interstitial fluid into the bloodstream. The hormones, which are chemical messengers, act on target cells, regulating their metabolic functions. Hormones affect most body cells, regulating growth and development,...
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Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. The main endocrine glands include the pituitary gland, pancreas, ovaries,testes, thyroid gland, and adrenal glands. The hypothalamus is a neuroendocrine ...
The endocrine system consists of a network of ductless glands that secrete hormones that affect the function of specific organs within the body,thus regulating many of the intricate functions of the body itself. These glands secretes their hormones directly into bloodstreams. The endocrine glands as ...
Theadrenal glandsare associated with the kidneys; one gland is located on top of each kidney as illustrated in Figure 4. The adrenal glands consist of an outer adrenal cortex and an inner adrenal medulla. These regions secrete different hormones. ...
1. Circulation: How Hormones Reach and Target Particular Cells Endocrine glands secrete hormones directly into the bloodstream. The hormones dissolve in plasma and travel the circulatory pathways through various body tissues. So why do hormones affect only their target cells in particular tissues? Becau...
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1. Definition of Endocrine Gland: An endocrine gland is a type of gland in the body that secretes hormones directly into the bloodstream. 2. Ductless Glands: Unlike exocrine glands, which have ducts to carry their secretions to specific sites, endocrine glands are ductless. This means that thei...
endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream ductless gland, endocrine gland gland, secreter, secretor, secretory organ - any of various organs that synthesize substances needed by the body and release it through ducts or directly into ...
Apocrine glands are located in the skin‚ breasts‚ eyelids‚ and ears. They are a type of exocrine gland‚ which are glands that secrete hormones into a duct. Counterparts of exocrine glands are endocrine glands that secrete their hormones directly into the bloodstream. Certain endocrine ...