Title: (Pre) Kidney Dissection Lesson Starter Activity: Create a flow chart to show how Urea and Blood move through the kidney

Learning Objectives State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood

Lesson Title Gr C: Recall and label the parts of the kidney Gr B: Explain the functions of the kidney Gr A: Explain the roles of the kidney with reference to homoeostasis Starter and introduction of LO’s Breakdown definitions Main activities Self Assessment Exam Questions Key Words Renal, salts, ions, water, kidney, urea Starter Starter Title Today we are looking at the following things State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood

Key Word Alert Kidneys Key Words Renal, salts, ions, water, kidney, urea Renal: Means kidney (Fancy word) Salts: Minerals in the body Ions: Charged particles Water: water (?) Kidney: An organ which filters the blood Urea: Waste product

Starter Answer: Blood Glomerulus (Stays in blood vessel) Renal Vein Urea Glomerulus Moves into Tubule Ureter

Lesson Title Gr C: Recall and label the parts of the kidney Gr B: Explain the functions of the kidney Gr A: Explain the roles of the kidney with reference to homoeostasis Starter and introduction of LO’s Breakdown definitions Main activities Self Assessment Exam Questions Key Words Renal, salts, ions, water, kidney, urea Starter Starter Title Today we are looking at the following things State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood

Excretion Getting stuff OUT of the body

Like … Waste products – Urea, CO 2, and salts – Any product of metabolism

… and Stuff you’ve got too much of – Vitamins or water

Urea A waste product to get rid of unwanted ammonia Ammonia comes from amino acids and is removed in a process called DEAMINATION

The removal organ The kidney! – These are your dustbin/recycling men. – They choose what to keep and what to remove Two sections – The Cortex (outside part) – The Medulla (inside part)

First: Everything enters the renal (Bowman’s) capsule from the glomerulus But wait! Some of that is good

So the good stuff get’s kept and put back into the blood

And water too This is a why when you are dehydrated your urine can be very, very yellow. And when you are hydrated it is very clear

How does it work? The kidney is made up of small particles called Nephrons They go from the cortex into the medulla and back again In the medulla there are lots and places for active transport

You will need the following 4 colours – Ions – Blood – Urea – Water

Draw the following What are these parts called Where do the Ions, blood, urea and water flow – Draw these with arrows

Add the tubule Where do these flow – Water – Urea – Blood – Ions

Finish the diagram (add the arrows)

The Nephron in the Kidney The nephrons are arranged like this in the kidney

What could you see? A longitudinal section through a kidney shows three distinct areas: an outer region called the cortex a middle region called the medulla, and an inner region leading to the ureter, called the pelvis.

Main Activity 2 (if time) Too much stuff – If your body is unable to store glucose it stays in your blood – Explain why you may find it in someone’s urine if they have diabetes? G & T Extension – How could you advise someone to change their diet if they have diabetes?

Lesson Title Gr C: Recall and label the parts of the kidney Gr B: Explain the functions of the kidney Gr A: Explain the roles of the kidney with reference to homoeostasis Starter and introduction of LO’s Breakdown definitions Main activities Self Assessment Exam Questions Key Words Renal, salts, ions, water, kidney, urea Starter Starter Title Today we are looking at the following things State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood

Self Assessment Check the Learning Objectives Can you do any/all of them? Tick them off if you can

Lesson Title Gr C: Recall and label the parts of the kidney Gr B: Explain the functions of the kidney Gr A: Explain the roles of the kidney with reference to homoeostasis Starter and introduction of LO’s Breakdown definitions Main activities Self Assessment Exam Questions Key Words Renal, salts, ions, water, kidney, urea Starter Starter Title Today we are looking at the following things State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood

Exam Questions Have a go at the exam question pages

Mark scheme for questions (a) (i) A1 (ii) (protein) molecule is large, ignore letters1 cannot pass through filter1 (b) B is taken back into the blood or B is reabsorbed1 reabsorbed completely or reabsorbed after filtration1

Lesson Title Gr C: Recall and label the parts of the kidney Gr B: Explain the functions of the kidney Gr A: Explain the roles of the kidney with reference to homoeostasis Starter and introduction of LO’s Breakdown definitions Main activities Self Assessment Exam Questions Key Words Renal, salts, ions, water, kidney, urea Starter Starter Title Today we are looking at the following things State that the kidneys excrete urea and excess water and salts Identify on drawings, diagrams and images, the ureters, bladder and urethra Explain the roles of the glomerulus, and tubule in filtering the blood