A Prime Mover for Extending the Arm at the Shoulder

question 66

Multiple Choice

A prime mover for extending the arm at the shoulder is the

• A) latissimus dorsi.
• B) pectoralis major.
• C) triceps brachii.
• D) serratus anterior.

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Definitions:

Resonance Forms

Resonance forms are alternative Lewis structures for a molecule that illustrate delocalized electrons within the molecule, showing different possible distributions of double bonds and lone pairs.

Resonance Forms

Various Lewis diagrams depicting the same compound to show the electron delocalization throughout the molecule.

Delocalization Of Charge

The spreading out of a charge over two or more atoms, typically observed with electrons in molecules that exhibit resonance.

Major Contributor

A term often used in chemistry and other sciences to refer to the most significant element or factor in a given process or structure.