Endocrine hormones and their functions pdf

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endocrine hormones and their functions pdf

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Endocrine System

Hormone , organic substance secreted by plants and animals that functions in the regulation of physiological activities and in maintaining homeostasis. Hormones carry out their functions by evoking responses from specific organs or tissues that are adapted to react to minute quantities of them. The classical view of hormones is that they are transmitted to their targets in the bloodstream after discharge from the glands that secrete them. This mode of discharge directly into the bloodstream is called endocrine secretion. The meaning of the term hormone has been extended beyond the original definition of a blood -borne secretion, however, to include similar regulatory substances that are distributed by diffusion across cell membranes instead of by a blood system. Hormonal regulation is closely related to that exerted by the nervous system , and the two processes have generally been distinguished by the rate at which each causes effects, the duration of these effects, and their extent; i.

Please understand that our phone lines must be clear for urgent medical care needs. When this changes, we will update this web site. Please know that our vaccine supply is extremely small. The endocrine system uses hormones to control and coordinate your body's internal metabolism or homeostasis energy level, reproduction, growth and development, and response to injury, stress, and environmental factors. Consider the following hormones and their role in the workings of the endocrine system:.

The main function of endocrine glands is to secrete hormones directly into the bloodstream. Hormones are chemical substances that affect the activity of another part of the body target site. In essence, hormones serve as messengers, controlling and coordinating activities throughout the body. See also Endocrine Glands. Upon reaching a target site, a hormone binds to a receptor, much like a key fits into a lock. Once the hormone locks into its receptor, it transmits a message that causes the target site to take a specific action. Hormone receptors may be within the nucleus or on the surface of the cell.

Endocrine Function

Current address: Dept. Tlalpan, Mexico DF Scott C. Two of these, follicle-stimulating hormone FSH and luteinizing hormone LH are termed gonadotropins and exert divergent effects upon the gonads to regulate and maintain essential reproductive processes such as gametogenesis, steroidogenesis, and ovulation. We possess a basic understanding of the role played by both gonadotropins in a wide variety of physiological processes associated with reproduction. This review is intended to provide a concise body of information regarding the biological processes associated with the biosynthesis and secretion of FSH. Since both gonadotropins appear to be synthesized by the same cell in the anterior pituitary gland 1, 2 and the biosynthetic and secretory processes are influenced by the same hypothalamic hormone, gonadotropin-releasing hormone GnRH 3 , this review will consider a great deal of information obtained from the study of both gonadotropins.

The endocrine system is made up of glands that make hormones. Hormones are the body's chemical messengers. They carry information and instructions from one set of cells to another. The endocrine pronounced: EN-duh-krin system influences almost every cell, organ, and function of our bodies. Too much or too little of any hormone can harm the body. Medicines can treat many of these problems. While many parts of the body make hormones, the major glands that make up the endocrine system are the:.

ENDOCRINE GLANDS. 1. List the general functions of hormones. 2. List the organs that secrete hormone as their first function and those organs that secrete.

Endocrine System Overview

Error: This is required. Error: Not a valid value. The hormonal system called the endocrine system in medical terminology has various glands that release different hormones. They take messages from one part of the body the gland to tell another part of the body the target cell to do something important.

Endocrine Community. Email Print Discuss. Written by Robert M. Sargis MD, PhD.

The endocrine system is a network of glands and organs located throughout the body. However, while the nervous system uses nerve impulses and neurotransmitters for communication, the endocrine system uses chemical messengers called hormones. Keep reading to discover more about the endocrine system, what it does, and the hormones it produces.

Hormones and the Endocrine System

About the Endocrine System

Cunningham, M. Sinnott, A. Denihan, M.

Уже несколько лет Танкадо пытался рассказать миру о ТРАНСТЕКСТЕ, но ему никто не хотел верить. Поэтому он решил уничтожить это чудовище в одиночку. Он до самой смерти боролся за то, во что верил, - за право личности на неприкосновенность частной жизни. Внизу по-прежнему завывала сирена. - Надо вырубить все электроснабжение, и как можно скорее! - потребовала Сьюзан. Она знала, что, если они не будут терять времени, им удастся спасти эту великую дешифровальную машину параллельной обработки. Каждый компьютер в мире, от обычных ПК, продающихся в магазинах торговой сети Радиошэк, и до систем спутникового управления и контроля НАСА, имеет встроенное страховочное приспособление как раз на случай таких ситуаций, называемое отключение из розетки.

Не успел он приняться за чтение отчета службы безопасности, как его мысли были прерваны шумом голосов из соседней комнаты. Бринкерхофф отложил бумагу и подошел к двери. В приемной было темно, свет проникал только сквозь приоткрытую дверь кабинета Мидж. Голоса не стихали. Он прислушался. Голоса звучали возбужденно.

Endocrine gland. Major hormones. Primary target organs. Adipose tissue. Leptin hypothalamus. Adrenal cortex. Glucocorticoids liver, muscle.


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