How is he feeling? How do you know?
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The main function of the human digestive system is to
rid the body of cellular waste materials
break down glucose in order to release energy
process organic molecules so they can enter cells
During a long distance run on a hot day, an athlete produces large quantities of sweat. As a result, the kidneys change the rate of urine production. Why is this change important?
Increased urine production removes amino acids produced
Decreased urine production allows the body to conserve water
What organ stores bile?
gall bladder
Which statement best describes the human respiratory system?
Gases diffuses across external and internal surfaces
The external body surface is kept moist.
It is composed of a network of moist passageways
What is the major difference between red blood cells and white blood cells?
Red blood cells contain hemoglobin, white blood cells do not.
When people exercise, their body cells build up more waste quickly. Which two body systems work together to remove these wastes from their cells?
respiratory and circulatory
