The Human Excretory System
Important Questions on The Human Excretory System
Copy and complete these sentences, using some of the words in the list. You may use each word once, more than once or not at all.
Absorption, amino acids, digestion, dioxide, fatty acids, ingestion, kidneys, liver, lungs, metabolism, monoxide, respiration, stomach, urea, urine, waste products
Excretion involves the removal of _______ ________ of _______ from the body. Carbon _______ is produced by all cells during _____ and is excreted by the ______. Urea is produced in the ______ from excess _______ _______ and is excreted by the ________, dissolved in water to form ____.
The diagram below shows what happens during filtration in the glomerulus of a kidney.
(f) Explain what happens to molecules in the filtrate before urine leaves the kidney.
The diagram below shows what happens during filtration in the glomerulus of a kidney.
Explain how filtration differs from the processes of which molecules move through the membrane?
The diagram below shows what happens during filtration in the glomerulus of a kidney.
(d) Name the molecules that pass out of the blood plasma.
Explain the difference between each of the following pairs of terms.
- Urine and urea.
Explain the difference between each of the following pairs of terms.
- Ureter and urethra.
What is urine?
List three substances which are reabsorbed from the nephron into the blood.
Name two substances found in the blood which you would not find in the fluid inside a renal capsule.
Why is this high blood pressure needed in glomerulus?
How is a blood pressure built up in a glomerulus?
What is a glomerulus?
Which blood vessels bring blood to the kidneys?
What is a kidney tubule?
What happens to the excess protein you eat?
