B5f2 Excretion.

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Presentation transcript:

B5f2 Excretion

Success Criteria State waste products (Grade E) Explain how ADH controls urine production (Grade A) Explain why carbon dioxide must be removed (Grade C)

Starter Label kidney and nephron diagrams in pairs

ADH Comprehension activity Read the paragraph on Osmoregulation Draw round a person in your group on sugar paper Label on the body how Osmoregulation works

ADH: Negative Feedback Diagram

ADH Urine production is controlled by ADH Anti diuretic hormone Released by pituitary gland Controlled by negative feedback ADH increases permeability of kidney tubules so more water is reabsorbed back in to the blood

Dialysis http://www.youtube.com/watch?v=WZosHub 0MOQ&feature=player_embedded

PPQ

PPQ

Answers

Carbon Dioxide CO2 is produced by respiration and removed from the body by the lungs High levels of CO2 must be removed from the body as they effect the pH of the body HIGHER: High levels of CO2 are detected by the brain and breathing rate increases

Activity Prove exhaled breath contains CO2

Homework Check Show my Homework for B5 Homework - 6

Plenary Complete Kidney question sheet on paper