객관식
Which muscle relaxes when the arm flexes?
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- 1. Introduction to Anatomy & Physiology5h 43m
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10. Muscles
Muscle Actions
Multiple Choice
Which muscle action is primarily responsible for shrugging the shoulders?
A
Elevation of the scapula
B
Protraction of the scapula
C
Retraction of the scapula
D
Depression of the scapula
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검증된 단계별 안내1
Identify the anatomical structure involved in shrugging the shoulders, which is the scapula.
Understand the movement of shrugging: it involves lifting the shoulders upwards.
Recognize that the upward movement of the scapula is referred to as 'elevation'.
Differentiate between the terms: 'elevation' (lifting upwards), 'protraction' (moving forward), 'retraction' (moving backward), and 'depression' (moving downward).
Conclude that the primary muscle action responsible for shrugging the shoulders is the elevation of the scapula.
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