Free Head and Neck MCQs with Answers
379 Head and Neck MCQs from General Anatomy, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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379 questions · page 4 of 19
- A. Ptosis
- B. Miosis
- C. Outward eye deviation
- D. Diplopia
Explanation: Oculomotor palsy causes ptosis, diplopia and an abducted or outward-deviated eye because the intact lateral rectus and superior oblique…
Correct answer: Miosis- A. the muscles of mastication would be denervated
- B. the muscles of facial expression would be denervated
- C. taste from the right anterior two thirds of the tongue would not be affected
- D. sympathetic fibre to salivary gland would be interrupted
Explanation: The facial nerve supplies the muscles of facial expression, so a right facial-nerve lesion weakens those muscles on the right.
Correct answer: the muscles of facial expression would be denervated- A. Three pairs
- B. Four pairs
- C. Five pairs
- D. Two pairs
Explanation: The four paired parasympathetic ganglia of the head are ciliary, pterygopalatine, submandibular and otic.
Correct answer: Four pairs- A. Lingual artery
- B. Lingual nerve
- C. Inferior alveolar nerve
- D. Inferior alveolar artery
Explanation: The lingual nerve, inferior alveolar nerve and inferior alveolar vessels lie close enough to be endangered during mandibular third-molar…
Correct answer: Lingual artery- A. Facial nerve
- B. Oculomotor nerve
- C. Abducens
- D. Trochlear
Explanation: Oculomotor, trochlear and abducens nerves are classified as somatic efferent because they supply extraocular muscles.
Correct answer: Facial nerve- A. Glossopharyngeal
- B. Spinal accessory
- C. Vagus
- D. Hypoglossal
Explanation: The vagus nerve is the only cranial nerve in this list that extends beyond the head and neck to supply important structures in the thorax…
Correct answer: Vagus- A. Internal laryngeal nerve
- B. Recurrent laryngeal nerve
- C. Superior laryngeal nerve
- D. Internal and recurrent laryngeal nerve
Explanation: The recurrent laryngeal nerve supplies motor innervation to nearly all intrinsic laryngeal muscles, while the internal laryngeal nerve…
Correct answer: Internal and recurrent laryngeal nerve- A. Occulomotor nerve
- B. Abducens nerve
- C. Trochlear nerve
- D. Facial nerve
Explanation: The oculomotor nerve supplies levator palpebrae superioris, which elevates the upper eyelid, so its palsy produces ptosis.
Correct answer: Occulomotor nerve- A. Whole of face
- B. Only ipsilateral upper part of the face
- C. Only contra lateral lower part of the face
- D. Whole of lower face
Explanation: The upper facial muscles receive bilateral cortical input, whereas the lower facial muscles mainly receive input from the opposite…
Correct answer: Only contra lateral lower part of the face- A. Occulomotor ( III) nerve
- B. Traochlear nerve
- C. Medial cerebral artery
- D. Trigeminal nerve
Explanation: The cavernous sinus contains cranial nerves III, IV, V1 and V2 in its lateral wall, together with the internal carotid artery and abducens…
Correct answer: Medial cerebral artery- A. Tendon of levator veli palatine muscle
- B. Tendon of Tensor veli palatine muscle
- C. A part of musculus uvulae
- D. A modification of palatal periosteum
Explanation: The palatine aponeurosis is formed mainly by the expanded tendon of tensor veli palatini, which spreads into the soft palate.
Correct answer: Tendon of Tensor veli palatine muscle- A. External laryngeal
- B. Recurrent laryngeal
- C. Internal laryngeal
- D. Glossopharyngeal
Explanation: The internal laryngeal nerve supplies sensation to the laryngeal mucosa above the vocal folds and reaches the vocal-fold region.
Correct answer: Internal laryngeal- A. Sternohyoid
- B. Omohyoid
- C. Stenothyroid
- D. Thyrohyoid
Explanation: Ansa cervicalis supplies sternohyoid, omohyoid and sternothyroid. Thyrohyoid is supplied directly by C1 fibres travelling with the…
Correct answer: Thyrohyoid- A. Great auricular nerve
- B. Lesser occipital nerve
- C. Greater occipital nerve
- D. Posterior auricular nerve
Explanation: The great auricular nerve, from the cervical plexus, supplies skin over the angle of the mandible and the lower part of the auricle.
Correct answer: Great auricular nerve- A. C2C3C4
- B. C1C2C3
- C. C3C4C5
- D. C4C5C6
Explanation: The phrenic nerve is formed chiefly by the anterior rami of C3, C4 and C5, with C4 providing the major contribution.
Correct answer: C3C4C5- A. Left hypoglossal
- B. Left glossopharyngeal
- C. Right hypoglossal
- D. Right glossopharyngeal
Explanation: Protrusion is produced mainly by the genioglossus muscles, and unilateral weakness causes the tongue to deviate toward the weak side.
Correct answer: Left hypoglossal- A. Motor innervation to styloglossus and hyoglossus muscles only
- B. Motor innervation to all of the muscles of the tongue both intrinsic and extrinsic
- C. Sensory innervation to the posterior third of the tongue
- D. Sensory innervation to the anterior two - thirds of the tongue
Explanation: The hypoglossal nerve supplies motor fibres to all intrinsic and extrinsic tongue muscles except palatoglossus.
Correct answer: Motor innervation to all of the muscles of the tongue both intrinsic and extrinsic- A. Hyoglossus
- B. Styloglossus
- C. Genioglossus
- D. Palatoglossus
Explanation: Hypoglossal nerve supplies hyoglossus, styloglossus, genioglossus and the intrinsic tongue muscles.
Correct answer: Palatoglossus- A. One
- B. Two
- C. More than two
- D. None of the above
Explanation: The vagus is the only cranial nerve that extends beyond the head and neck, carrying parasympathetic fibres into the thorax and abdomen.
Correct answer: One- A. External laryngeal
- B. Internal laryngeal
- C. Recurrent laryngeal
- D. B & C
Explanation: The internal laryngeal nerve supplies sensation above the vocal folds, while the recurrent laryngeal nerve supplies mucosa below them.
Correct answer: B & C