The function of the endocrine system is to control the metabolic activity in the body.…
The system operates by releasing chemical messengers called hormones into the bloodstream, which travel throughout the body. Eventually the hormone reaches a target organ or tissue to cause an effect. Growth and development, sexual maturation and reproduction, metabolism and homeostasis are some of the processes regulated by endocrine gland secretions. Endocrine effects can last hours, days, or even years.…
Shier, Butler, and Lewis: Hole’s Human Anatomy and Physiology, 12th ed. Chapter 13: Endocrine System…
The nervous and endocrine systems maintain homeostasis in the body. The nervous system is a fast but short-lived response that uses neurons and neurotransmitters to change the metabolism of the cells in the body (ex: stimulates muscle contractions). In contrast, the endocrine system is a slow but long-lasting response that uses glands which release hormones (chemicals) into the bloodstream.…
However, the environment does affect the secretions and the concentration of hormones that are released. Due to the "The Librarian" (n.d.), " principle of feedback mechanism” (Influence Of Heredity And Hormones On Human Behavior) the body is affected by the internal and external changes and this can stimulate hormone secretion. For instance, adrenaline will be produced when the body has been subjected to a fearful situation. Adrenaline concentrates the glucose in the muscle tissue which allows the body to prepare for fight or flight. Once the body has been removed from the fearful situation the hormone is no longer produced by the brain.…
The endocrine system is the system of the body in which releases hormones into the bloodstream. The hormones then cause different reactions within the body, and these reactions shape part of human behavior. There are seven glands within the body, which are the pineal gland, thyroid and parathyroids, the pancreas, pituitary gland, gonads, and adrenal glands. Each gland produces diverse hormones, and each hormone has a specific effect on the body, be it mood, energy, or sexual needs (Morris and Maisto, 2002).…
OVERVIEW The endocrine system, like the nervous system, controls body activities to maintain a relatively constant internal environment. The methods used by these two systems are different. This chapter describes the difference between endocrine and exocrine glands, the location of the endocrine glands, and the hormones they secrete (objectives 1 and 6). It explains the nature of hormones, the substances that function as hormones, how hormones affect target tissues, how the secretion of hormones is controlled by a negative feedback system and the nervous system, the general function of each hormone, and the result of too little or too much of each hormone (objectives 2-5, 7, and 8). In addition, the text distinguishes between physical and psychological stress, and describes how the endocrine system mediates the stress response (objectives 9 and 10). A knowledge of the function of the endocrine system is basic to the understanding of how metabolic processes are regulated to meet the changing needs of the body.…
Homeostasis is the control of internal conditions, be it temperature, specific blood conditions or other variables within living organisms, the purpose of homeostasis is to provide a consistent internal environment for set processes to occur. The endocrine system is made up of glands that produce hormones and release them into the blood, they cause certain reactions to occur in specific tissues. The endocrine system affects a large number of the body’s functions, including, metabolism, sexual function, reproduction, moods, and development. (dummies.com) The urinary system is the main excretory system and consists of 2 kidneys, 2 ureters, the bladder and the urethra. The system plays a vital part in homeostasis of water and electroltes in…
An example of chronic hormone secretion would be TSH. TSH is in everyone’s body. IF TSH levels in one’s body becomes out of normal range, this can cause thyroid disorders.…
The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things. The endocrine system is a very important system in the human body. There are many endocrine glands in this system, including -but not limited to- the pituitary gland, hypothalamus, pineal gland, thyroid gland, parathyroid glands, adrenal glands, pancreas, gonads, placenta, thymus, heart and gastric and intestinal mucosa. Endocrine glands are ductless glands that secrete hormones directly into the blood stream. The basic function of the endocrine system is to maintain homeostasis. The endocrine system uses hormones to communicate/control.…
A central organizing concept in biology is that life changes and develops through evolution, and that all life-forms known have a common origin. The theory of evolution postulates that all organisms on the Earth, both living and extinct, have descended from a common ancestor or an ancestral gene pool. This last universal common ancestor of all organisms is believed to have appeared about 3.5 billion years ago.[21] Biologists generally regard the universality and ubiquity of the genetic code as definitive evidence in favor of the theory of universal common descent for all bacteria, archaea, and eukaryotes (see: origin of life).[22]…
In order to understand this biology principle, you must understand the operation of the feedback system, and how it is used to regulate growth, reproduction, and to maintain dynamic homeostasis. The feedback system first consists of a sensor that receives the signal, which the signal then goes to a control center where information is processed, creating a response, and then lastly, it is sent out to the effector pathway where it will perform the response (eNotes). The purpose of the feedback system is to regulate growth, reproduction, and to maintain dynamic homeostasis. Homeostasis is defined as “stability of the body's internal environment, achieved by a system of integrated control systems activated by feedback systems...in response to changes occurring in a) the conditions of the external environment and b) the conditions of the internal body environment.”(eNotes) The term “dynamic” is used to describe homeostasis as a constant changed activity, because the body must experience a dynamic in order to maintain homeostasis. With this being said, the feedback system is in complete control of your body; controlling the levels of gases, nutrients, hormones, and chemical substances. Using feedback mechanisms, the system has full regulation of your growth and reproduction in your body (eNotes).…
Psychology 101 Review Outline Chapter 1: Introduction I. Basic Definitions (pg 3-5): A. Psychology - The scientific study of behavior and mental processes B. Theory - A general principle proposed to explain facts are related C. Hypothesis - A testable prediction about conditions under which particular behaviors or mental processes work D. Replication - Repetition of a study to verify research findings E. Goals of Psychology - To describe, explain, predict, and influence behavior/mental processes F. Basic (new knowledge) vs. applied (practical problems) research II. History and Types of Psychology (pg 6-13): A. Wilhelm Wundt: father of psychology, established 1st psychological lab in Leipzig in 1879, developed…
Endocrine system: the main function of the endocrine system is the glands and the hormones. They produce and release hormones into the body via the blood. The endocrine system controls, organ, cells, growth development, puberty, tissue function, metabolism and also plays a part in controlling mood. It works by releasing hormones in response to a change in the structure or function of the body.…
The endocrine system is one of two systems in the human body that regulates all bodily functions. It is comprised of organs called endocrine glands and include the ovaries, testes, pituitary, hypothalamus, pineal, pancreas, kidneys, thyroid, parathyroid, thymus, and adrenal glands. These glands, which are spread throughout the body, are responsible for the extensive and enduring release of certain hormones into the bloodstream for delivery to target cells. Hormones are chemical messengers which have specific functions; only cells with the proper receptor proteins can receive them. Once a hormone attaches to a cell’s receptor protein, the cell responds according…