Cranial nerves IX and X, also known as the glossopharyngeal and vagus nerves, are responsible for several motor functions.

1. Parts of speech: The vagus nerve (X) plays a role in speech by controlling some muscles of the pharynx and larynx.

2. Facial expression: This is not controlled by cranial nerves IX or X. Facial expressions are primarily controlled by the facial nerve (VII).

3. Swallowing: Both the glossopharyngeal (IX) and vagus (X) nerves are involved in swallowing. They control the muscles in the pharynx and larynx that contribute to the swallowing process.

4. Mastication: This is not controlled by cranial nerves IX or X. Mastication, or chewing, is primarily controlled by the trigeminal nerve (V).

So, the correct answers are "Parts of speech" and "Swallowing".

Question

Cranial nerves IX and X, also known as the glossopharyngeal and vagus nerves, are responsible for several motor functions.

1. Parts of speech: The vagus nerve (X) plays a role in speech by controlling some muscles of the pharynx and larynx.

2. Facial expression: This is not controlled by cranial nerves IX or X. Facial expressions are primarily controlled by the facial nerve (VII).

3. Swallowing: Both the glossopharyngeal (IX) and vagus (X) nerves are involved in swallowing. They control the muscles in the pharynx and larynx that contribute to the swallowing process.

4. Mastication: This is not controlled by cranial nerves IX or X. Mastication, or chewing, is primarily controlled by the trigeminal nerve (V).

So, the correct answers are "Parts of speech" and "Swallowing".

Knowee AI · Accepted Answer

Cranial nerves IX and X, also known as the glossopharyngeal and vagus nerves, are responsible for several motor functions.

1. Parts of speech: The vagus nerve (X) plays a role in speech by controlling some muscles of the pharynx and larynx.

2. Facial expression: This is not controlled by cranial nerves IX or X. Facial expressions are primarily controlled by the facial nerve (VII).

3. Swallowing: Both the glossopharyngeal (IX) and vagus (X) nerves are involved in swallowing. They control the muscles in the pharynx and larynx that contribute to the swallowing process.

4. Mastication: This is not controlled by cranial nerves IX or X. Mastication, or chewing, is primarily controlled by the trigeminal nerve (V).

So, the correct answers are "Parts of speech" and "Swallowing".

Cranial nerves IX and X are responsible for controlling what motor function(s)? Multiple select question.Parts of speechFacial expressionSwallowingMastication

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Cranial nerves IX and X are responsible for controlling what motor function(s)?

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