Which term describes a circular muscle that surrounds an opening?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the Funeral Service Sciences Examination of the National Board Exam. Practice with flashcards and multiple-choice questions, complete with hints and explanations. Excel in your exam!

Multiple Choice

Which term describes a circular muscle that surrounds an opening?

Explanation:
A circular muscle that surrounds an opening is called a sphincter. It forms a ring around an orifice and tightens to close the opening, then relaxes to allow opening. This is seen in the anal sphincter, the pyloric sphincter at the stomach’s outlet, and the iris around the pupil. Ligaments connect bones, tendons attach muscle to bone, and valves control one-way flow but are not muscles that encircle an opening.

A circular muscle that surrounds an opening is called a sphincter. It forms a ring around an orifice and tightens to close the opening, then relaxes to allow opening. This is seen in the anal sphincter, the pyloric sphincter at the stomach’s outlet, and the iris around the pupil. Ligaments connect bones, tendons attach muscle to bone, and valves control one-way flow but are not muscles that encircle an opening.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy