Water & Waste - Elgin Academy, Moray

Water & Waste - Elgin Academy, Moray

Learning Intentions I can explain the process of homeostasis in the control of blood water concentration if it varies from the norm. I understand the importance of water control and what happens to the body if control is not maintained. I can give a detailed explanation of how ADH affects the kidneys in response to low blood water concentration. Success Criteria I can describe the role of the hypothalamus and pituitary gland in the hormonal control of blood water concentration.

I can give detail of how ADH affects the kidney tubules. Our bodies gain water in 3 different ways: Drinking water Eating foods Chemical reactions e.g. respiration Our bodies lose water in 4 different ways: Urine Faeces (moist faeces are expelled more

easily) Breathing out Sweating (evaporation of water keeps the body cool) Water Balance Our kidneys ensure that the water concentration of our bodies always stays the same: Water Gain = Water Loss

Water Regulation The kidneys regulate water, but this is controlled by the brain. The brain produces ANTI-DIURETIC HORMONE (A.D.H.) which controls the volume of water reabsorbed by the kidney nephrons. Different volumes of ADH are produced to suit the varying water conditions of the body, ensuring water balance is maintained. Bowmans Capsule

ADH control Animation Role of ADH Water content of blood too low Salt eaten or much sweating

Brain releases a lot of ADH Too much water drunk Water content of blood normal High volume of water passes into blood

High volume of water reabsorbed by kidney Small volume of concentrated urine passed to the bladder Water content of blood too high Brain releases

little ADH Low volume of water passes into blood High volume of dilute urine passed to the bladder Low volume of water reabsorbed

by kidney High Water Conc. In Blood Less ADH released from brain Less water reabsorbed from the nephron into the blood High quantity of dilute urine produced Water conc. of blood returns to normal Low Water Conc. In Blood Lots of ADH released from the brain. Lots of water reabsorbed from the nephron

into the blood. Low volume of concentrated urine is produced Water conc. of the blood returns to normal

Recently Viewed Presentations

  • Single Line Tethered Glider - Rochester Institute of Technology

    Single Line Tethered Glider - Rochester Institute of Technology

    Bridle attached at two points on the fuselage causes structural failure at the wing root with 180 MPa. ... Works well when the ball joints are kept in tension as seen in Fig 1. ... Single Line Tethered Glider
  • Using the QFT for Consensus-Building& Decision-Making in ...

    Using the QFT for Consensus-Building& Decision-Making in ...

    Using the QFT for Consensus-Building& Decision-Making in School Settings. Luz Santana, Co-Director. The Right Question Institute . Cambridge, MA. Kailua, HI
  • Symbiosis and Homeostasis - worldofteaching.com

    Symbiosis and Homeostasis - worldofteaching.com

    Parasitism Mutualism: both benefit Mutualism: both benefit Homeostasis Maintaining a stable internal environment. Examples of Homeostasis The thickening of fur in winter The darkening of skin in sunlight The seeking of shade in heat, The production of more red blood...
  • Geography Get The Picture Wet Rice Farming  Geography

    Geography Get The Picture Wet Rice Farming Geography

    Geography Get The Picture Wet Rice Farming Geography Get The Picture Primary Industry Geography Get The Picture Hydraulic Action Geography Get The Picture Fetch Geography Get The Picture Subsidy Geography Get The Picture Formal Industry Geography Get The Picture Space...
  • Prezentace aplikace PowerPoint - zsnastrani.cz

    Prezentace aplikace PowerPoint - zsnastrani.cz

    21.4 Comparatives and Superlatives - form We form comparatives by adding . ER. or . R. to the adjective. Long adjectives need . MORE (vĂ­ce) in front of the adjective. We form superlatives by adding
  • Group Tasks What do Scales and Indexes have

    Group Tasks What do Scales and Indexes have

    Indexes, Scales and Typologies Content validity Achieved by including all the dimensions of a concept Most non-demographic variables require more than one measure Composite Methods Used pre-dominantly in quantitative studies Indexes and Scales allow a summary of several measure of...
  • Art History work for AVI2O - Ms. Williams' Student Site

    Art History work for AVI2O - Ms. Williams' Student Site

    Complete the worksheet, "Egyptian Sculpture and Painting." Complete the following sketchbook activity for homework: Draw a personal story in the style of the Egyptian wall paintings (see p. 161 figure 7.14 for inspiration). Remember to not use the rules of...
  • Chapter 3 Software Computer Concepts 2014 3 Chapter

    Chapter 3 Software Computer Concepts 2014 3 Chapter

    Security software is designed to protect computers from various forms of destructive software and unauthorized intrusions. The terms malicious software and malware refer to any computer program designed to surreptitiously enter a computer, gain unauthorized access to data, or disrupt...