Respiratory and Excretory condensed 2012
Alveoli Alveoli are the air sacs in your lungs Moist thin membranes Surrounded by a network of blood capillaries Alveoli are the functional unit of the Lungs
Alveoli Text Oxygen CO2 WASTE EXCRETED: CO2 & AND WATER VAPOR
How circulatory and respiratory system works together The capillaries and alveoli exchange gases The capillaries pick up oxygen to bring to the body’s tissues The capillaries drop off Carbon Dioxide so the Lungs can get rid of it
EXCRETION: EXCRETION: the process of metabolic wastes eliminated. What are metabolic wastes? 1) Excess Salts 2) Excess Water 3) Urea 4) Carbon Dioxide (CO2)
ORGANS THAT EXCRETE 1) Lungs CO2 & H20 Vapor 2) Skin Salts, H20, &Urea 3) Kidneys Urea, H20, Salts WASTE IT EXCRETESORGAN
KIDNEYS JOB KIDNEYS JOB: They filter waste from your blood 2 end products: 1) Clean Blood 2) Urine
Functional Unit of the Kidney The Kidney’s functional unit is called a Nephron The Nephron is what filters the blood and maintains the water balance in your body
Kidney’s: Urinary System Kidneys are part of the Urinary System Urinary System consists of: a) 2 Kidneys b) 2 Ureters c)Urinary Bladder d) Urethra
Urinary System
Kidney Homeostasis Kidneys regulate the amount of water in your blood Kidneys help maintain blood volume, blood pH, and removal of waste products from the blood
Your cells swell with water, and amount of water in your blood increases Your kidneys reabsorb the water from your blood, and you excrete it What happens when you drink too much water?
What do you think happens when you DON’T drink a lot of water?
Excretory System Dysfunction Kidney Stones: solid material that may block the kidneys, ureters, or bladder Gout: uric acid crystals build up in joint areas Acne: blockage of skin’s pores from waste products