Topic 5 Quiz Questions

Question 1

The _____ is the only part of the pharynx not used by both the respiratory and digestive systems.

Answer 1

The nasopharynx is the only part of the pharynx not used by both the respiratory and digestive systems.

Question 2

Which of the following muscles attach to the pharyngotympanic tube?

• Tensor veli palatini,
• stylopharyngeus,
• levator veli palatini,
• salpingopharyngeus
• tensor veli palatini
• palatopharyngeus

Answer 2

The tensor veli palatini, levator veli palatini, salpingopharyngeus attach to the pharyngotympanic tube.

The pharyngotympanic tube (auditory tube) opens into the nasopharynx from the middle ear. This tube allows for equalisation of air pressure in the middle ear.

Question 3

What is the action of the palatoglossus muscle?

• Elevates tongue
• Protrudes tongue
• Elevates tongue, depresses soft palate
• Retracts tongue
• Elevates pharynx, depresses soft palate

Answer 3

The palatoglossus muscle elevates tongue, depresses soft palate

Question 4

What is the action of the palatopharyngeus muscle?

• Elevates tongue
• Protrudes tongue
• Elevates tongue, depresses soft palate
• Retracts tongue
• Elevates pharynx, depresses soft palate

Answer 4

The palatopharyngeus muscle elevates pharynx, depresses soft palate.

Question 5

What is the action of the genioglossus muscle?

• Elevates tongue
• Protrudes tongue
• Elevates tongue, depresses soft palate
• Retracts tongue
• Elevates pharynx, depresses soft palate

Answer 5

The genioglossus muscle protrudes the tongue.

Question 6

What is the action of the hyoglossus muscle?

• Elevates tongue
• Protrudes tongue
• Elevates tongue, depresses soft palate
• Retracts tongue
• Elevates pharynx, depresses soft palate

Answer 6

The hyoglossus muscle retracts tongue.

Question 7

What is the action of the styloglossus muscle?

• Elevates tongue
• Protrudes tongue
• Elevates tongue, depresses soft palate
• Retracts tongue
• Elevates pharynx, depresses soft palate

Answer 7

The action of the syloglossus muscle is to elevate tongue.

Question 8

Name the muscle labelled A in the image:

Answer 8

Palatoglossus or Palatoglossal muscle

Question 9

Name the muscle labelled B in the diagram:

Answer 9

Palatopharyngeus or palatopharyngeal muscle.

Question 10

Name the muscle labelled C in the diagram:

Answer 10

Tensor veli palatini

Question 11

Which of the following cranial nerves does not contribute to the pharyngeal plexus?

XII Hypoglossul

XI Accessory

IX Glossopharyngeal

X Vagus

Answer 11

XII hypoglossal does not contribute to the pharyngeal plexus.

CN IX - pharyngeal branches of glossopharyngeal nerve - sensory, CN X - pharyngeal branch of vagus nerve - motor

Because the cranial part of accessory nerve (CN XI) leaves the jugular foramen as joining the CN X, it is sometimes considered part of the plexus as well.

Question 12

Name the structure labelled M in the diagram:

Answer 12

Pharyngotympanic tube/auditory tube/eustachian tube.

Question 13

Name the muscle labelled X in the diagram:

Answer 13

Uvular muscle.

Question 14

Name the muscle labelled Y in the diagram:

Answer 14

levator veli palatini

Question 15

Name the muscle labelled Z in the diagram:

Answer 15

Tensor veli palatini

Question 16

Which of the following muscles has motor neurons originating from the trigeminal nerve?

• levator veli palatini
• palatopharyngeus
• tensor veli palatini

Answer 16

Tensor veli palatini has motor neurons originating from the trigeminal nerve.

Question 17

Which cranial nerve receives special sensory information from the anterior tongue?

Answer 17

Facial nerve - CNVII

Question 18

If you had normal taste and general sensation in the posterior tongue, and normal taste sensation but no general sensation in the anterior tongue, which cranial nerve is likely to be damaged?

Answer 18

Trigeminal - CNV

(specifically, the lingual branch CNV₃ )

Question 19

Paralysis of the tongue would indicate damage to which cranial nerve?

Answer 19

Hypolgossal - CNXII