Presentation on theme: "The Endocrine System This presentation may contain material protected under copyright law. This material was obtained and used following a reasoned analysis."— Presentation transcript:
1 The Endocrine SystemThis presentation may contain material protected under copyright law. This material was obtained and used following a reasoned analysis of the Fair Use exemption for educators. This presentation may not be reproduced.Image Source:
2 Objectives After this Module the learner will be able to: Understand the components of the Endocrine SystemUnderstand how those components work together as a unit
3 What is the Endocrine System? The Endocrine System is a body system of glands that secrete chemical messages to be transferred to organs throughout the body.This system is a link between the brain and the organs that control the body (i.e. Mood, Metabolism, Growth & Development, and Reproduction)
4 Click the movie icon below to watch a video about the Endocrine System Pituitary glandPineal gland (hypothalamus)Thyroid glandThymusAdrenal glandPancreasOvaryTestesImage Source:References
5 Pineal gland (a.k.a. Hypothalamus) Located in the lower central part of the brainDirect link between the endocrine system and the nervous systemThe pineal gland secretes hormones which either suppress or stimulate the secretions from the pituitary gland
6 Pituitary gland MOST IMPORTANT PART OF THE ENDOCRINE SYSTEM ! ! ! Secretes multiple hormones which control the rest of the glands in the endocrine systemInfluenced by factors including emotions and seasonal changesHow does it work
7 The Relay of Information Brain senses sunlightPineal gland detects Brain MessagePituitary Gland senses hormones form Pineal glandPituitary gland sends hormonal messages out to the body
8 Pituitary gland (continued) Produces endorphins which work with the nervous system to reduce sensitivity to painProduces sex hormones which signal the testes and ovaries to make sex hormonesControls the ovulation and menstrual cycles in womenDivided into two parts1) Anterior lobe2) Posterior lobe
9 Anterior LobeThe purpose for the anterior lobe is to regulate the processes of thyroid, adrenal, and reproductive glands.It produces four main hormonesGrowth Hormone- Bone and tissue development.Prolactin- Activates milk production in women that are breast feeding.Thyrotropin- Stimulates thyroid to produce thyroid hormones.Corticotropin- Stimulates adrenal gland to produce hormones.
10 Posterior LobeProduces antidiuretic hormones which control the water balance in our bodies. (i.e. urine and kidney output)Produces oxytocin which helps control uterine contractions during the female labor.
11 Thyroid gland Produces the hormones thyroxine & triiodothyronine These hormones control the rate that the body burns fuel to produce energyAlso help control bone, brain, and nervous system developmentAttached to the thyroid are four smaller glands called the parathyroid. These glands produce two hormones.Parathyroid- Regulates calcium levels in the bloodCalcitonin- Helps the parathyroid hormone
12 Thymus IMPORTANT TO THE IMMUNE SYSTEM ! ! ! Produces lymphocytes which mature into T cellsT Cells help fight against infection.
14 Adrenal glandEach person contains two of these, One located on top of each kidneyMade up of two partsAdrenal cortexAdrenal medulla
15 Adrenal CortexProduces hormones called Orticosteroids which regulate salt and water balance in the body, the body's response to stress, metabolism, the immune system, and sexual development and function.
16 Adrenal MedullaProduces catecholamines; such as epinephrine, which is better known as adrenalineInjections of epinephrine are used for severe allergic reactions. (i.e. epipen)
17 Pancreas Produces two important hormones InsulinGlucagonBoth hormones work together to make sure the body maintains the right amount of sugar (glucose) in the blood.
19 Ovaries Produce two main hormones Estrogen- involved in the development of female sexual features, pregnancy, and regulation of menstrual cycleProgesterone- involved in pregnancy and the regulation of the menstrual cycle.
20 TestesProduce hormones called androgens the most important being testosterone; These hormones regulate body changes associated with sexual developmentAlong with hormones from the pituitary gland, testosterone also aids the production of sperm by the testes.