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Total questions: 30
Worksheet time: 30mins
An angiogram of a 50-year-old man revealed a blockage of a coronary artery. This artery supplies both ventricles and is accompanied by the middle cardiac vein. Select the most likely affected artery.
Anterior interventricular artery
Left coronary artery
Posterior interventricular artery
Right coronary artery
Right marginal artery
A 40-year-old man complained of chest pain, radiating to the tip of the left shoulder. He was diagnosed to have pericarditis. The most likely nerve causing the referred pain is the
intercostal nerve
phrenic nerve
recurrent laryngeal nerve
sympathetic nerve
vagus nerve
A 40-year-old poultry farmer was planned for thoracocentesis due to pleural effusion. Select the most likely site to perform the procedure.
Fourth left intercostal space at the midclavicular line
Ninth left intercostal space at the midaxillary line
Second left intercostal space at the midaxillary line
Seventh left intercostal space at the midaxillary line
Sixth left intercostal space at the midclavicular line
During a lobectomy procedure, a surgeon needs to separate the pleura from the thoracic wall. Select the most likely layer that provides the natural cleavage plane for this separation.
Endothoracic fascia
Innermost intercostal muscle
Internal intercostal muscle
Parietal pleura
Superficial fascia
This abdominal horizontal plane is used as a landmark during locating a suitable vertebral level prior to performing lumbar puncture. The most likely plane described is the
subcostal plane
supracristal plane
transpyloric plane
transtubercular plane
transumbilical plane
A houseman tried to locate the internal jugular vein in the triangle of the neck to measure the jugular venous pressure in a patient with heart failure. Select the most likely structures that form this triangle.
Anterior border of trapezius, posterior border of sternocleidomastoid muscle and inferior belly of omohyoid
Body of hyoid, bilateral anterior belly of digastric muscles
Inferior border of mandible, anterior and posterior belly of digastric muscles
Superior belly of omohyoid, anterior border of sternocleidomastoid muscle and median line of the neck
Superior belly of omohyoid, posterior belly of digastric, anterior border of sternocleidomastoid muscle
This deep cervical fascia encircles the neck and encloses both the parotid and submandibular glands. It thickens to form the stylomandibular ligament. Select the most likely feature of this fascia
It blends with the pericardium
It encloses the trapezius muscle
It forms the anterior wall of the carotid sheath
It forms the axillary sheath laterally
It fuses with the endothoracic fascia
A 15-year-old student was bitten by a stray cat on the medial side of her forearm and developed low grade fever. Later, she noticed a lump in the axilla. The most likely affected group pf lymph node is the
apical lymph nodes
central lymph nodes
lateral lymph nodes
pectoral lymph nodes
subscapular lymph nodes
A 40-year-old motorcyclist sustained a midshaft fracture of the humerus following MVA. Physical examination revealed inability to extend the wrist with intact elbow joint extension. Select the most likely reason.
Lateral head of triceps arises above the spiral groove
Long head of triceps arises from the infraglenoid tubercle of the scapula
Long head of triceps receives its innervation proximal to the site of lesion
Medial head of triceps arises below the spiral groove
Triceps recieves dual innervation
A 22-year-old footballer suffered injury to his right thigh during a match. He was unable to flex his right hip and knee joints. The most likely muscle involved is the
rectus femoris
sartorius
vastus intermedius
vastus lateralis
vastus medialis
A group of students were discussing the derivatives of the aortic arches. The most likely derivative of the third aortic arch is the
first part of internal carotid artery
hyoid artery
maxillary artery
right subclavian artery
stapedial artery
A denstist performed a nerve block. Following this, the mucous membrane of the lower lip and the skin of the chin was anaesthetised. The most likely nerve which has been blocked is the
buccal nerve
inferior alveolar nerve
marginal mandibular nerve
mental nerve
superior alveolar nerve
A carotid bypass was performed on the common carotid artery in a 50-year-old man. In order to access the artery, the carotid sheath was opened. The most likely structure found within the carotid sheath is the
accessory nerve
ansa cervicalis
external jugular vein
internal jugular vein
phrenic nerve
A 25-year-old college student had diplopia while reading. The ophthalmologist observed that the patient was unable to abduct and laterally rotate the eyeball. The most likely affected muscle is the
inferior oblique
inferior rectus
medial rectus
superior oblique
superior rectus
During cranial nerve examination, the gag reflex of a patient was found to be absent. The most likely nerve affected is the
facial nerve
hypoglossal nerve
trigeminal nerve
vagus nerve
vestibulocochlear nerve
Laryngoscopic examination in a 60-year-old patient revealed loss of abduction of the vocal cords. The most likely muscle affected is the
cricothyroid
lateral cricoarytenoid
posterior cricoarytenoid
thyroarytenoid
vocalis
A 21-year-old male was diagnosed with hyperacusis due to paralysis of the stapedius muscle. The most likely nerve involved is the
auriculotemporal nerve
facial nerve
glossopharyngeal nerve
greater auricular nerve
vestibulocochlear nerve
A 45-year-old chronic smoker presented with a non healing ulcer of the lateral border of the tongue on the right side. Neck palpation showed that the malignant mass had spread to the draining lymph nodes. Select the most likely group of lymph nodes involved.
deep cervical
jugulodigastric
jugulo-omohyoid
retropharyngeal
submandibular
A 35-year-old male was diagnosed with sphenoid meningioma. This mass compressed structures passing through the left superior orbital fissure. The most likely structure affected is the
branches of the middle meningeal artery
infraorbital nerve
lacrimal nerve
ophthalmic vein
supratrochlear nerve
Motor nerve supply to the pharynx is derived from the pharyngeal plexus. All muscles of the pharynx are supplied by the vagus nerve except the stylopharyngeus. The most likely nerve which supplies this muscle is the
accessory nerve
glossopharyngeal nerve
hypoglossal nerve
mandibular nerve
superior laryngeal nerve
A 25-year-old female was admitted to the emergency department following an MVA. CT scan of the head revealed a lens shaped hematoma at the right lateral side. Select the most likely affected blood vessel.
Anterior communicating artery
Middle cerebral artery
Middle meningeal artery
Superior cerebral vein
Superior sagittal sinus
A 45-year-old man presented with severe headache and blurring of vision. A CT of the head revealed distension of the lateral ventricle on the left side due to presence of a tumour. Select the most likely site of obstruction of the ventricular system
central canal of the spinal cord
cerebral aqueduct
foramen of Luschka
foramen of Magendie
interventricular foramen
This dural septum is a sickle shaped fold that lies in the midline between the two cerebral hemisphere. The dural venous sinus within its free inferior margin is most likely the
inferior sagittal sinus
sigmoid sinus
straight sinus
superior sagittal sinus
transverse sinus
A 50-year-old male experience difficulty in looking to his side mirror while driving. Examination revealed involvement of an extraocular muscle responsible for abduction of the eye. The most likely nerve affected is the
abducent nerve
oculomotor nerve
optic nerve
trigeminal nerve
trochlear nerve
A 40 year-old male had paralysis of the muscles of facial expression at the left lower half of his face. A diagnosis of right upper motor neuron facial nerve palsy was made upon further examination. Select the best explanation for this patient's presentation
Its lower motor neurons are located in main motor nucleus
Its main motor nucleus is located deep in the reticular formation of the lower part of the pons
Its upper motor neurons are located in the primary somatomotor cortex
Lower part of the facial nucleus receives corticonuclear fibres from opposite cerebral hemisphere
Upper part of the facial nucleus receives corticonuclear fibres from both cerebral hemisphere
A patient with temporal bone fracture presented with dryness of the eye secondary to dysfunction of the lacrimal gland on the affected side. The cell bodies of postganglionic parasympathetic axons supplying the lacrimal gland are most likely in the
ciliary ganglion
geniculate ganglion
otic ganglion
pterygopalatine ganglion
trigeminal ganglion
Musculature of this arch includes the posterior belly of digastric and stylohyoid muscles. Select the most likely cranial nerve associated with this arch.
Facial nerve
Glossopharyngeal nerve
Recurrent laryngeal nerve
Superior laryngeal nerve
Trigeminal nerve
Pituitary hormones are not synthesized in the pituitary glands but in the neurosecretory cells located in the paraventricular nucleus of hypothalamus. Select the most likely site where the hormones will be transported by the axons.
Infundibulum
Pars distalis
Pars intermedia
Pars tuberalis
Posterior lobe
Fractures of this bone of the skull causes deleterious effect on the pituitary gland, leading to post traumatic endocrine dysfunction. The most likely bone which lodges this gland is the
ethmoidal bone
frontal bone
lacrimal bone
maxillary bone
sphenoid bone
This structure of the brainstem lies between the anterior median fissure and the anterolateral sulcus. It is composed of bundles of corticospinal tracts. The structure which best fits the above description is the
basilar groove
cuneate tubercle
gracile tubercle
olive
pyramid
