Raising Your Arm to Shoulder Level Is Accomplished Almost Entirely

question 136

Multiple Choice

Raising your arm to shoulder level is accomplished almost entirely by the ________.

• A) pectoralis major
• B) biceps brachii
• C) trapezius
• D) deltoid
• E) triceps brachii

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Definitions:

Plasticity

The degree to which a developing structure or behavior is modifiable due to experience.

Synaptic Pruning

The elimination of neurons as the result of nonuse or lack of stimulation.

Myelination

The process of forming a myelin sheath around the axons of neurons, improving the speed and efficiency of electrical signal transmission in the nervous system.

Motor Skill

The ability to perform movements and tasks involving the coordination of muscles and the body.