Multiple Choice
Which of the following correctly traces blood flow from the renal cortex to the renal vein?
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25. The Urinary System
Introduction to the Urinary System
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What happens to solid waste in the digestive system?
A
It is broken down into nutrients.
B
It is excreted from the body as feces.
C
It is converted into energy.
D
It is absorbed into the bloodstream.
Verified step by step guidance1
Begin by understanding the role of the digestive system, which is to break down food into nutrients that the body can use, and to eliminate waste products.
Solid waste in the digestive system primarily consists of undigested food, bacteria, and cells shed from the lining of the intestines.
As food moves through the digestive tract, nutrients are absorbed into the bloodstream, primarily in the small intestine.
The remaining solid waste, which cannot be digested or absorbed, moves into the large intestine where water is absorbed, and the waste is compacted into feces.
Finally, the solid waste is excreted from the body through the rectum and anus as feces, completing the process of digestion and waste elimination.
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