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  • Question 1 - A gymnast was admitted to hospital for investigation of a weakness in the...

    Incorrect

    • A gymnast was admitted to hospital for investigation of a weakness in the extension and adduction of his arm. He had a previous penetrating wound in the area of the posterior axillary fold. Which of these muscles is the likely cause?

      Your Answer: Trapezius

      Correct Answer: Latissimus dorsi

      Explanation:

      All the criteria of this case points towards the latissimus dorsi. This muscle is greatly involved in extension, adduction and medial rotation of the arm and forms the posterior axillary fold which in this case was injured.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      79.2
      Seconds

  • Question 2 - Which muscle is most likely to be affected following an injury to the...

    Incorrect

    • Which muscle is most likely to be affected following an injury to the thoracodorsal nerve (C6-C8)?

      Your Answer:

      Correct Answer: Latissimus dorsi

      Explanation:

      Latissimus dorsi is a triangular, flat muscle that covers the lumbar region and the lower half of the thoracic region. It is supplied by the sixth, seventh and eighth cervical nerves through the thoracodorsal (long subscapular) nerve.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      0
      Seconds

  • Question 3 - In relation to the muscles of facial expression, It is true to say:...

    Incorrect

    • In relation to the muscles of facial expression, It is true to say:

      Your Answer:

      Correct Answer: They are in the same subcutaneous plane as the platysma muscle

      Explanation:

      The facial muscles generally originate from the facial bones and attach to the skin, in the same plane as the platysma muscle. They are all innervated by cranial nerve VII (the facial nerve). The occipitofrontalis muscle consists of two parts: The occipital belly, near the occipital bone, and the frontal belly, near the frontal bone.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 4 - Rapid eye movement (REM) sleep is likely to be affected by a lesion...

    Incorrect

    • Rapid eye movement (REM) sleep is likely to be affected by a lesion in the:

      Your Answer:

      Correct Answer: Pons

      Explanation:

      Rapid eye movement (REM) sleep is also known as paradoxical sleep, as the summed activity of the brain’s neurons is quite similar to that during waking hours. Characterised by rapid movements of the eyes, most of the vividly recalled dreams occur during this stage of sleep. The total time of REM sleep for an adult is about 90–120 min per night.

      Certain neurones in the brainstem, known as REM sleep-on cells, which are located in the pontine tegmentum, are particularly active during REM sleep and are probably responsible for its occurrence. The eye movements associated with REM are generated by the pontine nucleus with projections to the superior colliculus and are associated with PGO (pons, geniculate, occipital) waves.

    • This question is part of the following fields:

      • Neurology
      • Physiology
      0
      Seconds

  • Question 5 - Which of the following structure forms the floor of the posterior triangle of...

    Incorrect

    • Which of the following structure forms the floor of the posterior triangle of the neck:

      Your Answer:

      Correct Answer: Prevertebral fascia

      Explanation:

      The posterior triangle (or lateral cervical region) is a region of the neck which has the following boundaries:
      Apex: Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone
      Anterior: Posterior border of the sternocleidomastoid muscle
      Posterior: Anterior border of the trapezius
      Base: Middle one third of the clavicle
      Roof: Investing layer of the deep cervical fascia
      Floor: The anterolateral portion of prevertebral fascia

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 6 - The middle meningeal artery is the largest among the arteries that supplies that...

    Incorrect

    • The middle meningeal artery is the largest among the arteries that supplies that dura mater of the brain. The middle meningeal artery is a branch of the?

      Your Answer:

      Correct Answer: Maxillary artery

      Explanation:

      The middle meningeal artery is the largest of the three (paired) arteries that supply the meninges.

      The middle meningeal artery is a large arterial branch of the maxillary artery which is a terminal branch of the external carotid artery. Upon originating, the middle meningeal artery passes through the foramen spinosum. In the skull, it courses in the middle cranial fossa where it provides several branches.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 7 - Internal haemorrhoids are painless and only sensitive to stretch. They are formed from...

    Incorrect

    • Internal haemorrhoids are painless and only sensitive to stretch. They are formed from folds of the mucous membrane and the submucosa of the anal canal which contain varicose branches of the:

      Your Answer:

      Correct Answer: Superior rectal vein

      Explanation:

      Internal haemorrhoids are formed by varicosities of the branches of the superior rectal vein.

      External haemorrhoids are formed by varicosities of the branches of the inferior rectal vein.

    • This question is part of the following fields:

      • Anatomy
      • Colorectal
      0
      Seconds

  • Question 8 - During a case presentation, a 26 year old is said to have fractured...

    Incorrect

    • During a case presentation, a 26 year old is said to have fractured his pelvis and shattered his coccyx following a motorbike accident. It is mentioned that he is likely to have lacerated his middle sacral artery from this kind of injury. Where does the middle sacral artery branch from?

      Your Answer:

      Correct Answer: Abdominal aorta

      Explanation:

      The middle sacral artery arises from behind the aorta a little above the point of its bifurcation to descend down in front of L4,5, the sacrum and coccyx.

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      0
      Seconds

  • Question 9 - What is the name of the cutaneous branch of the posterior primary ramus...

    Incorrect

    • What is the name of the cutaneous branch of the posterior primary ramus of C2?

      Your Answer:

      Correct Answer: Greater occipital nerve

      Explanation:

      The dorsal primary ramus of the spinal nerve C2 is the greater occipital nerve which provides cutaneous innervation to the skin of the back of the head. The ventral primary ramus gives off the great auricular nerve, the lesser occipital nerve and the ansa cervicalis.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      0
      Seconds

  • Question 10 - A recognised side-effect of prefrontal leukotomy is: ...

    Incorrect

    • A recognised side-effect of prefrontal leukotomy is:

      Your Answer:

      Correct Answer: Confusion

      Explanation:

      Used previously as a treatment for psychiatric disorders, prefrontal leucotomy severs the connection between the prefrontal cortical association area and the thalamus. This leads to functional isolation of the prefrontal and orbitofrontal association cortex. Thus, along with the desired reduction in anger and frustration, undesirable side effects included changes in mood and affect, as well as confusion.

    • This question is part of the following fields:

      • Neurology
      • Physiology
      0
      Seconds

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Anatomy (0/1) 0%
Upper Limb (0/1) 0%
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