Which Muscle of the Pelvic Floor Acts as a Sphincter

question 13

Multiple Choice

Which muscle of the pelvic floor acts as a sphincter in the vagina and anal canal?

• A)Levator ani
• B)Ischiocavernosus
• C)Coccygeus
• D)Superficial transverse perineal muscle
• E)Bulbospongiosus

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Definitions:

Introns

Non-coding sections of DNA or RNA that are removed before the final mRNA is formed in eukaryotic cells.

Nucleotide Sequences

The order of nucleotides in a DNA or RNA molecule that determines genetic information.

Double-stranded DNA

The normal form of DNA, consisting of two parallel strands of nucleotides wound around each other in a helix.

RNA Molecule

A nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.