The Internal Urethral Sphincter Is Formed by Circular Smooth Muscle

question 89

Multiple Choice

The internal urethral sphincter is formed by circular smooth muscle. The external urethral sphincter is derived from voluntary skeletal muscle.

• A) Both statements are true.
• B) Both statements are false.
• C) The first statement is true; the second is false.
• D) The second statement is true; the first is false.

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Definitions:

M-xylene

A type of xylene where two methyl groups are attached to a benzene ring in meta positions to each other.

Structure

The arrangement of atoms within a molecule, determining the molecule's shape and chemical behavior.

P-aminobenzoic Acid

A white crystalline substance that is a part of the vitamin B complex and is used in sunscreen products.

Structure

The arrangement or organization of something's parts or elements which defines its nature or function.