Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The common function of all types of muscle tissue is to generate tension.
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10. Muscles
Muscle Actions
Scelta multipla
What is the primary action of the trapezius muscle?
A
Extension of the knee
B
Flexion of the forearm
C
Adduction of the thigh
D
Elevation, retraction, and rotation of the scapula
Guida verificata passo dopo passo1
Begin by identifying the location and attachment points of the trapezius muscle. The trapezius is a large, superficial muscle that extends from the occipital bone at the base of the skull, down to the lower thoracic vertebrae, and laterally to the scapula.
Understand the anatomy of the trapezius muscle. It is divided into three parts: the upper, middle, and lower fibers, each contributing to different movements of the scapula.
Consider the actions of the upper fibers of the trapezius. These fibers are responsible for elevating the scapula, which is the movement of lifting the shoulder girdle upwards.
Examine the role of the middle fibers of the trapezius. These fibers retract the scapula, pulling it towards the spine, which is important for stabilizing the shoulder during various activities.
Analyze the function of the lower fibers of the trapezius. These fibers assist in rotating the scapula, which is crucial for raising the arm above the head. Together, these actions contribute to the overall movement and stability of the shoulder girdle.
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