Identify a muscle responsible for exit of waste material from the body.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Sphincter.
- A sphincter is a circular band of muscle that encircles a body passage or opening. When it contracts, it tightens and closes the passage, and when it relaxes, it opens the passage.
- This ability to contract and relax helps control the flow of substances through the body's openings and passages.