Multiple Choice
Which of the following are traits commonly found in primates?
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1. Introduction to Anatomy & Physiology
Introduction to Organ Systems
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Which of the following statements about sphincters is false?
A
Sphincters can be voluntary or involuntary.
B
The pyloric sphincter controls the passage of food from the stomach to the small intestine.
C
Sphincters are found only in the digestive system.
D
Sphincters are circular muscles that regulate the passage of substances.
Verified step by step guidance1
Understand the definition of a sphincter: Sphincters are circular muscles that regulate the passage of substances through openings in the body.
Identify the types of sphincters: Sphincters can be voluntary, such as the external anal sphincter, or involuntary, like the lower esophageal sphincter.
Examine the role of the pyloric sphincter: It controls the passage of food from the stomach to the small intestine, which is a true statement.
Consider the statement about sphincters being found only in the digestive system: Recognize that sphincters are also found in other systems, such as the urinary system (e.g., the urethral sphincter).
Determine which statement is false: Based on the understanding that sphincters are not exclusive to the digestive system, identify the false statement as 'Sphincters are found only in the digestive system.'
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