Application/Connection: Excretory System Ws Tu 171 Excretory System Notes and Ws 172 Excretory System Notes and Ws 2/18/15 2/18/15 Starter: Application/Connection: Excretory System Ws Tu Practice: Glue notes here Exit: Explain some of the ways the body rids itself of waste.
Breaking down of food into simple substances Mouth esophagus Breaking down of food into simple substances stomach Small intestine Large intestine Anus
1. Starter Excretory System Notes Excretory System Ws February 18, 2015 AGENDA Objective 7.12 B Identify the main functions of the systems of the human organism, including the circulatory, respiratory, skeletal, muscular, digestive, excretory, reproductive, integumentary, nervous, and endocrine systems by completing a skeletal system worksheet
Table of Contents Date Lecture/ Activity/ Lab Page 2/17 Digestive System Notes and Ws 169-170 2/18 Exretory System Notes and Ws 171-172
The Excretory System
Excretory System Why do our bodies need to filter waste from the body? Maintain homeostasis Removal of harmful materials Removal of excess fluids, chemicals, minerals, vitamins, salts, and other wastes from the blood
Organs of the Excretory System Kidneys = filter blood that has collected wastes from cells http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Organs of the Excretory System Kidneys = filter blood that has collected wastes from cells – Nephrons = filters inside the kidneys – Produce urine (sterile waste fluid, 96% water) http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Organs of the Excretory System Ureters = tubes that lead from each kidney to bladder http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Organs of the Excretory System Urinary bladder = muscular organ that holds urine http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Organs of the Excretory System Urethra = tube that carries urine from the bladder out of the body http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Where is urine stored until the body is ready to eliminate it? Kidneys Ureters Bladder Urethra
Functions of Excretory System Rids blood of wastes (urea) http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Functions of Excretory System Controls blood volume by removing extra water produced by cells http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Functions of Excretory System Balances salts and water so cells can function properly http://commons.wikimedia.org/wiki/File:Illu_urinary_system.jpg
Which is not a function of the excretory system? Removes wastes from the blood Removes excess water from the blood Removes carbon dioxide from the blood Removes excess salt from the blood
Other Excretory Organs Skin = releases perspiration (water and salts) to cool off the body
Other Excretory Organs Lungs = release carbon dioxide from the body
Application/Connection: Excretory System Ws Tu 171 Excretory System Notes and Ws 172 Excretory System Notes and Ws 2/18/15 2/18/15 Starter: Application/Connection: Excretory System Ws Tu Practice: Glue notes here Exit: Explain some of the ways the body rids itself of waste.