The external opening of a passage is called a(n)
A)Meatus
B)Urethra
C)Sphincter
D)Calyx
E)Trigone

Question

Quizplus · Accepted Answer

Meatus is the correct term for the external opening of a passage, such as the ear canal or urethra. Urethra is a specific passage in the body, not a term for an opening. Sphincter is a muscle that controls the opening and closing of a passage. Calyx is a structure in the kidney, and trigone is a triangular area in the bladder.

The External Opening of a Passage Is Called A(n)