Page 49 - Science Course 2 (Book 1)
P. 49
Mo2-L3a: How Do Nutrients Enter and Leave the Body?
Key Concept
How Do Nutrients Enter and Leave the Body?
How does food enter and leave the body?
When the liver breaks down proteins, urea forms.
Urea is toxic if it stays in the body.
The kidneys remove urea from the body by making
urine.
SUMMARY
How Do Nutrients Enter and Leave the Body?
The kidneys remove liquid wastes from the
body.
Urine leaves each kidney through the ureter and is
stored in a flexible sac, called the bladder.
Urine is removed from the body through the urethra.
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