The Accessory Nerve

question 142

Multiple Choice

The accessory nerve

• A)has fibers that join the vagus nerve.
• B)has both a cranial and a spinal component.
• C)provides innervation to the trapezius and sternocleidomastoid muscles.
• D)is cranial nerve XI.
• E)All of these choices are correct.

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Definitions:

Pharynx

The pharynx is a musculomembranous tube that connects the nasal and oral cavities to the esophagus and larynx, serving as a passageway for air and food.

Palatine Tonsils

Lymphatic tissue located on either side of the throat that helps protect the body from respiratory and gastrointestinal infections.

Oral Cavity

The mouth, or the beginning of the digestive tract, which comprises structures such as the lips, teeth, and tongue.

Nasopharynx

The upper part of the pharynx, connecting the nasal cavity above the soft palate.