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  • Question 1 - What is the action of the muscle of the orbit that originates on...

    Correct

    • What is the action of the muscle of the orbit that originates on the lesser wing of the sphenoid bone, just above the optic foramen?

      Your Answer: Elevation of the upper eyelid

      Explanation:

      The levator palpebrae superioris is the muscle in the orbit that elevates the superior (upper) eyelid. The levator palpebrae superioris originates on the lesser wing of the sphenoid bone, just above the optic foramen and receives somatic motor input from the ipsilateral superior division of the oculomotor nerve.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      31.1
      Seconds

  • Question 2 - The inferior palpebral nerve ascends behind the orbicularis oculi. What is the terminal...

    Incorrect

    • The inferior palpebral nerve ascends behind the orbicularis oculi. What is the terminal branch of the inferior palpebral nerve?

      Your Answer: Nasociliary nerve

      Correct Answer: Infraorbital nerve

      Explanation:

      The inferior palpebral nerve is a branch of the maxillary nerve. It supplies the skin and conjunctiva of the lower eyelid.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      45
      Seconds

  • Question 3 - The optic foramen, superior orbital fissure, foramen ovale, foramen rotundum and foramen sinosum...

    Correct

    • The optic foramen, superior orbital fissure, foramen ovale, foramen rotundum and foramen sinosum are all located on which bone at the base of the skull?

      Your Answer: Sphenoid

      Explanation:

      The sphenoid bone consists of two parts, a central part and two wing-like structures that extend sideways towards each side of the skull. It forms the base of the skull, and floor and sides of the orbit. On its central part lies the optic foramen. The foramen ovale, foramen spinosum and foramen rotundum lie on its great wing while the superior orbital fissure lies on its lesser wing.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      27.9
      Seconds

  • Question 4 - Which of the following foramen provides passage of the facial nerve? ...

    Incorrect

    • Which of the following foramen provides passage of the facial nerve?

      Your Answer:

      Correct Answer: Internal acoustic meatus

      Explanation:

      The internal auditory meatus provides a passage through which the vestibulocochlear nerve, the facial nerve, and the labyrinthine artery (an internal auditory branch of the basilar artery) can pass from inside the skull to structures of the inner ear and face.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 5 - A patient had sudden complete loss of vision of the right eye. Fundoscopy...

    Incorrect

    • A patient had sudden complete loss of vision of the right eye. Fundoscopy showed the distinct cherry red spot on the retina. Which of the following arteries was occluded?

      Your Answer:

      Correct Answer: Central artery of the retina

      Explanation:

      The central retinal artery supplies all the nerve fibres that form the optic nerve, which carries the visual information to the lateral geniculate nucleus of the thalamus. Thus if the central retinal artery gets occluded, there is complete loss of vision in that eye and the entire retina (with the exception of the fovea) becomes pale, swollen and opaque while the central fovea still appears reddish (this is because the choroid colour shows through). This is the basis of the famous Cherry red spot seen on examination of the retina on fundoscopy of a central retinal artery occlusion (CRAO).

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 6 - At which cervical level does the common carotid artery bifurcate into the internal...

    Incorrect

    • At which cervical level does the common carotid artery bifurcate into the internal and external carotid arteries?

      Your Answer:

      Correct Answer: C4

      Explanation:

      The common carotid arteries are present on the left and right sides of the body. These arteries originate from different sources, but follow symmetrical courses. The right common carotid originates in the neck from the brachiocephalic trunk; the left from the aortic arch in the thorax. These split into the external and internal carotid arteries at the upper border of the thyroid cartilage, at around the level of the fourth cervical vertebra.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 7 - The anatomical course of the phrenic nerve passes over the following muscle in...

    Incorrect

    • The anatomical course of the phrenic nerve passes over the following muscle in the neck?

      Your Answer:

      Correct Answer: Anterior scalene

      Explanation:

      The phrenic nerve originates in the neck between C3-C5, mostly C4 spinal root. It enters the thoracic cavity past the heart and lungs to the diaphragm. In the neck, this nerve begins at the lateral border of the anterior scalene muscle, its course then continues inferiorly on the anterior aspect of the anterior scalene muscle as it moves towards the diaphragm.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 8 - An excision of a mass in the right parietal area of the head...

    Incorrect

    • An excision of a mass in the right parietal area of the head will be performed. In which layer of the scalp are the nerves and blood vessels located?

      Your Answer:

      Correct Answer: Connective tissue

      Explanation:

      The scalp is the anatomical area bordered by the face at the front, and by the neck at the sides and back. The scalp is usually described as having five layers:

      1. The skin which contains numerous sebaceous glands and hair follicles.

      2. The connective tissue, a dense subcutaneous layer of fat and fibrous tissue that lies beneath the skin, containing the nerves and vessels of the scalp.

      3. The aponeurosis or galea aponeurotica, a tough layer of dense fibrous tissue which runs from the frontalis muscle anteriorly to the occipitalis posteriorly.

      4. The loose areolar connective tissue layer provides an easy plane of separation between the upper three layers and the pericranium.

      5. The pericranium is the periosteum of the skull bones and provides nutrition to the bone and the capacity for repair.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 9 - A 46-year old female patient experienced a stroke that affected her glossopharyngeal nerve....

    Incorrect

    • A 46-year old female patient experienced a stroke that affected her glossopharyngeal nerve. Damage to the glossopharyngeal nerve would most likely:

      Your Answer:

      Correct Answer: Result in general sensory deficit to the pharynx

      Explanation:

      The glossopharyngeal nerve (CN IX) has many functions which include:

      – Contributes to the pharyngeal plexus

      – Receiving general somatic sensory fibres from the tonsils, pharynx, the middle ear and the posterior third of the tongue.

      – supplies motor fibres to only one muscle; the stylopharyngeus muscle.

      – provides parasympathetic fibres to the parotid gland via the otic ganglion.

      – Receives visceral sensory fibres from the carotid bodies & carotid sinus.

      – Receives special visceral sensory fibres from the posterior third of the tongue.

      The above functions will directly be affected by the damage of the glossopharyngeal nerve.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 10 - The ostium of the maxillary sinus opens into which of the following structures?...

    Incorrect

    • The ostium of the maxillary sinus opens into which of the following structures?

      Your Answer:

      Correct Answer: Middle meatus

      Explanation:

      The maxillary sinuses usually develop symmetrically. The maxillary sinus ostium drains into the infundibulum which joins the hiatus semilunaris and drains into the middle meatus.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Anatomy (2/3) 67%
Head & Neck (2/3) 67%
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