Neurology Questions PDF

## Neurology Questions ### Page 1 47. The upper motor neurons are located in which of the following: - post central gyrus - **pre central gyrus** - visual cortex - auditory cortex 48. Regarding the white matter of the cerebral hemisphere, all of the following are examples of association type of f...

## Neurology Questions ### Page 1 47. The upper motor neurons are located in which of the following: - post central gyrus - **pre central gyrus** - visual cortex - auditory cortex 48. Regarding the white matter of the cerebral hemisphere, all of the following are examples of association type of fibers except: - uncinated fasciculus - superior longitudinal fasciculus - optic radiation - **fronto-occipital fasciculus** 49. Lateral ventricle is the cavity of: - Telencephalon - Diencephalon - Metencephalon - Mesencephalon 50. Which cerebral lobe is located immediately posterior to central sulcus & superior to lateral sulcus? - Frontal lobe - Temporal lobe - Insula - **Parietal lobe** 51. Which of the following is a branch of internal carotid artery? - Superior cerebellar artery - Posterior communicating artery - **Labyrinthine artery** - Inferior cerebellar ### Page 2 62. Meckel's cartilage of 1st pharyngeal arch gives rise to all of the following except: - Mandible - Malleus - Incus - **Spenomandibular ligament** 63. Thyroid gland during its development descends in front of the following structures except - Mandible - Trachea - Pharyngeal gut - **Hyoid bone** 64. The nasolacrimal duct is formed along the line of fusion of lateral nasal process & maxillary process by invagination of: - Mesoderm & endoderm - Endoderm & ectoderm - **Mesoderm & ectoderm** - Ectoderm 65. In skeletal muscles, which of the following is correct? - Multiple peripheral nuclei are present - H band in the middle of the I band - **Troponin is at specific active site** - Sarcomere lies in between two membranes 66. Which type of epithelium lines the bronchi of lungs? - **Pseudostratified columnar ciliated** - Simple cuboidal - Simple squamous - Transitional ### Page 3 67. Which of the following components is responsible for anaphylactic shock? - Fibroblasts - **Eosinophils** - Mast cells - Pericytes 68. Regarding transverse sections of the spinal cord which of the following is true: - The anterior horn is more prominent - Gray matter occupies the outer portion of spinal cord - Spinal cord appears as thick stained tissue - **There are three horns in TS of spinal cord** 69. Pituitary basophils are characteristically PAS-positive because of the following structural characteristics? - Abundant mitochondria - Extensive brush borders - **Granules containing glycoproteins** - Granules containing growth hormone 70. Section of sympathetic ganglion can be identified by the presence of which of the following - Well-developed satellite cells - Small multi polar cells - **Large pseudo-unipolar neurons** - Bipolar neurons ### Page 4 1. Which bone forms part of the roof of the orbit? - Maxilla - **Frontal** - Ethmoid - Zygomatic 2. Which nerve provides motor innervation to the superior oblique muscle? - Oculomotor nerve (CN III) - Abducens nerve (CN VI) - **Trochlear nerve (CN IV)** - Optic nerve (CN II) 3. The ciliary ganglion is located between which two structures? - Lacrimal gland and optic nerve - **Lateral rectus and optic nerve** - Medial rectus and lacrimal gland - Superior oblique and superior rectus 1. Which of the following is a derivative of the sympathetic root of the ciliary ganglion? - Ciliary muscles - Sphincter pupillae - **Dilator pupillae** - Lacrimal gland 2. What is the primary arterial supply to the orbit? - Facial artery - Maxillary artery - **Ophthalmic artery** - Infraorbital artery 3. Which bone contributes to both the lateral wall and floor of the orbit? - Sphenoid - **Zygomatic** - Palatine - Maxilla ### Page 5 1. A patient presents with a restriction in upward gaze after a blow to the orbit. Which structure is most likely trapped in a floor fracture? - Inferior oblique muscle - **Inferior rectus muscle** - Superior rectus muscle - Levator palpebrae superioris 2. Which clinical condition is characterized by infection of the lacrimal sac? - **Dacryocystitis** - Dry Eye Syndrome - Adie's pupil - Blowout fracture 3. Which of the following statements about lacrimation is FALSE? - Tears drain into the inferior meatus of the nasal cavity. - **The lacrimal sac is located in the lateral orbital wall.** - Tears are spread over the eye by blinking. - Excretory ducts of the lacrimal gland open into the conjunctival sac. 1. A patient reports diplopia and inability to look laterally in the affected eye. Which nerve is most likely damaged? - Oculomotor nerve - Trochlear nerve - **Abducens nerve** - Optic nerve 2. A 45-year-old patient with chronic sinusitis develops a medial wall orbital fracture. Which sinus is most likely involved? - Frontal sinus - Maxillary sinus - **Ethmoidal sinus** - Sphenoidal sinus 3. A patient has a dilated pupil unresponsive to light but reacts to accommodation. Dysfunction in which structure is most likely? - Sympathetic root of the ciliary ganglion - **Parasympathetic root of the ciliary ganglion** - Sensory root of the ciliary ganglion - Ophthalmic division of the trigeminal nerve ### Page 6 4. A patient presents with excessive tearing and a swelling at the medial aspect of the lower eyelid. Which condition should be suspected? - Orbital cellulitis - **Dacryocystitis** - Chalazion - Sty 5. A lesion in the Edinger-Westphal nucleus affects which function? - Pupil dilation - **Pupil constriction** - Eyeball sensory innervation - Tear drainage Which of the following is part of the outer fibrous coat of the eyeball?. - Choroid - Retina - **Sclera** - Iris 2. What is the primary function of the cornea? - Nourishing the retina - **Refracting light for focusing** - Adjusting lens shape - Regulating light entry 3. Which muscle is responsible for elevating the upper eyelid? - Superior oblique - **Levator palpebrae superioris** - Superior rectus - Inferior oblique 1. Which nerve supplies the lateral rectus muscle? - Oculomotor nerve (CN III) - Trochlear nerve (CN IV) - **Abducens nerve (CN VI)** - Optic nerve (CN II) ### Page 7 2. The superior oblique muscle is responsible for which primary action? - Elevation - **Intorsion** - Depression - Adduction 3. Which artery is the main blood supply to the eyeball and orbit? - Central retinal artery - **Ophthalmic artery** - Ciliary arteries - Maxillary artery 1. A lesion affecting the oculomotor nerve (CN III) would result in all of the following EXCEPT: - Ptosis - Impaired elevation of the eye - Loss of adduction - **Impaired abduction** 2. A patient presents with diplopia and difficulty looking downward while reading. Which muscle is likely paralyzed? - Inferior rectus - **Superior oblique** - Lateral rectus - Superior rectus 3. Which vein drains venous blood from the orbit into the cavernous sinus? - Central retinal vein - **Inferior ophthalmic vein** - Basilar vein - Internal jugular vein 1. A patient exhibits drooping of the upper eyelid and difficulty elevating the eye. Which nerve is most likely affected? - Trochlear nerve - Abducens nerve - **Oculomotor nerve** - Optic nerve ### Page 8 2. A child presents with misaligned eyes due to an imbalance in extraocular muscle action. This condition is called: - **Strabismus** - Ptosis - Cavernous sinus thrombosis - Diplopia 3. A patient with a cavernous sinus thrombosis may exhibit all of the following EXCEPT: - Ophthalmoplegia - Loss of sensation in the ophthalmic nerve distribution - Ptosis - **Vision loss due to optic nerve compression** 4. A 60-year-old patient has double vision and cannot move their left eye laterally. Which cranial nerve is most likely affected? - Trochlear nerve (CN IV) - Oculomotor nerve (CN III) - **Abducens nerve (CN VI)** - Optic nerve (CN II) 5. A lesion in the sympathetic fibers supplying the levator palpebrae superioris muscle would result in: - Complete inability to open the eye - **Partial ptosis** - Strabismus - Total loss of eyelid elevation 6. Which structure primarily converts light into electrical signals for transmission to the brain? - Cornea - Lens - **Retina** - Choroid