Which of the Following Muscles Raises Each Labial Commissure of the Lips

question 21

Multiple Choice

Which of the following muscles raises each labial commissure of the lips to contribute to a smile?

• A) Zygomaticus major muscle
• B) Buccinator muscle
• C) Platysma muscle
• D) Epicranius muscle

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Definitions:

Electron Transfer Chains

Biological pathways through which electrons are transferred from electron donors to electron acceptors, playing a crucial role in cellular respiration and photosynthesis.

NADH

Nicotinamide adenine dinucleotide (NADH) is a coenzyme involved in redox reactions, carrying electrons from one reaction to another in cellular respiration.

FADH2

A reduced form of flavin adenine dinucleotide, a molecule that plays a crucial role in cellular respiration by transporting electrons.

Glycolysis

A metabolic pathway that breaks down glucose into pyruvate, releasing energy and pyruvic acid in the process, occurring in the cytoplasm of cells.