The Kidney Structure and Function
The Urinary System
1. Label each part of the urinary system.
Renal vein
Renal artery
A
Kidney
B
Bladder
Ureter
Urethra
2. Name the fluid that travels from part A to part B.
Urea
3. Describe the function of part B.
To store urea
Urea is one of the substances that is found in the urinary system.
4. How is urea produced?
Urea is the waste from the body. It is produced in the kidney
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The Kidney Structure and Function
Blood Sample 1
Glucose
Urea
Molecule
Ions
Relative Concentration in Blood
Relative Concentration in Blood
Two blood samples are shown in the graphs below.
Blood Sample 2
Glucose
Urea
Ions
Molecule
5. Explain which blood sample came from the renal vein and which came from the renal artery.
The Nephron
Each kidney contains over one million nephrons. The diagram shows the start of a nephron.
6. Label each part.
7. Describe the function of this part of the nephron and explain how it is adapted to carry out
this role.
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The Kidney Structure and Function
The diagram shows the rest of the nephron.
renal artery
glomerulus
renal vein
8. Explain what happens to glucose in the nephron tubule.
9. Explain why the surface of the tubule is folded into microvilli.
The final section of the nephron is the collecting duct.
10. Explain the role of ADH and the collecting duct in regulating the water content of the blood.
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