2 28 intro to the endocrine systemPresentation Transcript
Do NowO Describe how two body systems work together?
Objective: How does the body send and receive chemical messages?
Think, pair, and shareO Talk to your partner for 15 seconds and try to compare the nervous system – remember it uses electrical signaling – to something we use everydayPhone calls, text messaging, email…
Endocrine System sends messages, too1. Endocrine system is made up of different glands2. The glands release hormones into the blood3. Hormones are chemicals that travel through the blood
Endocrine System sends messages, too1. Affect many other cells throughout the body2. Deliver messages to other parts of the body Like the nervous system is a phone system, think of the endocrine system like a radio broadcast system
Key QuestionO Explain the primary difference between the endocrine system and the nervous system…
Regents ReviewIn humans, certain glands producechemicals that are distributed by thecirculatory system and influence varioustarget organs. These glands are classifiedas1. intestinal glands2. salivary glands3. gastric glands4. endocrine glands
GlandsO An organ that produces and secretes a hormone O Ex: pancreas, testes, ovaries, thyroidO Their secretions produce many reactions: Increase/decrease heart rate Increase/decrease breathing rate Increase/decrease metabolism Regulate blood-glucose level Regulate water balance in the bloodAnd on and on….(this list goes on for a while)
Hormones and Cell ReceptorsO How do hormones know which cells to affect?1. Hormones bind to specific cell receptors on specific cells (sound familiar?)2. Cells with receptors for a hormone and get affected are called TARGET CELLS
Talk with your partnerO What are the three arrows pointing at?1. Cells of a gland2. A hormone3. A cell receptor
Your Body’s Response to HormonesBody’s cell responses to hormones are:1. Slower than neuron signals2. Longer lasting neuron signals3. Depend on other hormones O 2 hormones might produce opposite reactionsEx: may take minutes,hours, days for a hormoneto have its full affect
Regents ReviewIncreased perspiration, a higher bodytemperature, and a rapidly beating heart are allpossible responses to a stressful situation.These body responses are most likely a directresult of the interaction of the1. digestive and endocrine systems2. digestive and respiratory systems3. nervous and hormonal systems4. nervous and reproductive system
Hormone: ProstaglandinsO Prostaglandins are a type of hormoneO Made by many different cellsO Can have different effects: 1. Cause muscles to contract ex: uterus, bronchioles, blood vessels 2. Cause pain sensation during headaches When would prostaglandins be appropriate to be released into the lungs and contract the muscles around bronchioles?
Regents ReviewDuring a race, the body temperature of arunner increases. The runner responds byperspiring, which lowers body temperature.This process is an example of1. maintenance of homeostasis2. an antigen-antibody reaction3. an acquired characteristic4. environmental factors affecting phenotype
Pair upO Take 6 minutes to complete the two tables on Glands and HormonesO Use your notes!
Answer the ObjectiveO How does the body send and receive chemical signals?
CitationsO All pictures taken from Google Pictures