CNS Written Anatomy Past Paper (2023/2024)

A PLUS in CNS  Written Anatomy Your Guide To A+ 0 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Art...

A PLUS in CNS  Written Anatomy Your Guide To A+ 0 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Arterial supply of brain 1) Enumerate FIVE branches of the basilar artery? Grade A 1. Pontine branches 2. Anterior-inferior cerebellar artery 3. Internal auditory (Labyrinthine) artery 4. Superior cerebellar artery 5. Posterior cerebral artery 2) Enumerate branches of Vertebral a? Grade A 1. Two Posterior spinal arteries 2. Anterior spinal artery 3. Posterior inferior cerebellar artery 4. Meningeal branches 5. Medullary arteries 3) Enumerate branches of Internal Carotid a? Grade A+ 1. Ophthalmic artery 2. Posterior communicating artery 3. Anterior choroidal artery 4. Anterior cerebral artery 5. Middle cerebral artery 4) Describe circle of Willis, as regards site, formation and functional significance? Grade A++ 1 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ 5) Arterial supply of Medulla oblongata? Grade A 1. Two vertebral arteries 2. Anterior and posterior spinal arteries 3. Anterior and posterior inferior cerebellar arteries 4. Basilar artery 6) Arterial supply of Pons? Grade B 1. Numerous (pontine) branch from the basilar artery. 2. Anterior inferior cerebellar artery 7) Arterial supply of Mid-Brain? Grade A 1. Posterior cerebral artery. 2. Superior cerebellar artery. 3. Direct branches from Basilar artery. 4. Posterior communicating and Anterior choroidal arteries. ‫ هتكتب اجابة السؤال الخامس و السادس و السابع‬Blood supply of brain stem ‫لو قالك عايز ال‬ 8) Arterial supply of Cerebellum? Grade B Superior surface: Superior cerebellar artery Inferior surface: » Anterior part by Anterior inferior cerebellar artery » Posterior part by posterior inferior cerebellar artery 2 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ 9) Arterial supply of the cerebrum? Grade A 10) Enumerate branches of cerebral arteries? Grade B 1. Cortical branches 2. Central branches 3. Choroidal branches 3 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Cranial nerves IX, X, XI & XII 11) Enumerate branches of Glossopharyngeal nerve? Grade A++ 1. Tympanic branch 2.Branch to the carotid sinus and the carotid body 3. Motor branch 4.Tonsillar branch 5. Pharyngeal branches 6. Lingual branches 12) Enumerate branches of Vagus nerve? Grade A++ 1. Meningeal branch 2. Auricular branch 3. Pharyngeal branch 4. Cardiac branches 5. Carotid branch 6. laryngeal nerves 13) Roots & branches of Accessory nerve? Roots: A- Cranial root: exits from posterolateral sulcus of medulla oblongata below vagus nerve. B- Spinal root: from anterior horn of upper five spinal segments Branches: 1. The cranial root: joins the vagus nerve to be distributed through its pharyngeal, laryngeal and cardiac branches. 2. The spinal root: supply the sternomastoid and trapezius muscles. 4 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Development of CNS 14) Development of brain? Grade A 5 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ 15) Congenital anomalies of spinal cord? Grade A+++ 16) Congenital anomalies of brain? Grade A 1. Cranium Bifidum:  Defective ossification of skull bone which leads to: Meningocele: herniation of the meninges. Meningo-Encephalocele: herniation of the meninges with part of the brain. Meningo-hydro-encephalocele: herniation of the meninges & brain with part of the ventricle within herniated brain tissue. 2. Anencephaly (cranioschisis):  the brain is represented by degenerated tissue with absent skull vault. 6 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Mastication Ms 17) Nerve supply & actions of muscles of mastication? Grade A ✓ Muscles of mastication 1) Temporalis 2) Masseter 3) Medial Pterygoid 4) Lateral Pterygoid ✓ Nerve supply  All are supplied by the anterior division of the mandibular nerve except medial pterygoid by the main trunk of the mandibular nerve. ✓ Actions A. Elevation: temporalis -masseter- medial pterygoid B. Depression: Lateral pterygoid C. Retraction: posterior fibers of temporalis D. Protraction: Medial pterygoid- Lateral pterygoid-Masseter E. Side-to-side movement: Medial and lateral pterygoids of one side contracting alternatively with that of opposite side 18) Branches of facial nerve & Type of fibers? Grade A A. Branches of Facial nerve (VII): 1. Greater petrosal nerve (parasympathetic). Supplies lacrimal gland & Carries taste sensation from palate. 2. Nerve to the stapedius muscle (motor). 3. Chorda tympani nerve(parasympathetic and sensory). Supplies submandibular and the sublingual salivary glands & Carries taste sensation from anterior two thirds of tongue. B. Type of fibers: 1) Parasympathetic (lacrimal, submandibular and sublingual glands). 2) Motor (to all muscles de developed from second pharyngeal arch). 3) Sensory (taste from anterior two thirds of tongue). 7 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Facial Ms 19) Parts and action of orbicularis oculi? Grade B  Parts 1. Orbital part 2. Palpebral part 3. Lacrimal part  Action of orbicularis oculi Orbital part: It closes the eye tightly to protect the eye as from intense light Palpebral part: It closes the eyelids gently as in sleep or in blinking Lacrimal part: It dilates the lacrimal sac helping drainage of lacrimal fluid Grade C 20) Enumerate fascial ms & their actions ? 1) Orbicularis oculi 2) Orbicularis Oris 3) Buccinator 4) Platysma 5) Occipitofrontalis muscle (a scalp muscle) Actions 1. Orbicularis oculi actions: 2. Orbicularis Oris actions: 8 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ 3. Buccinator actions: 4. Platysmas actions: Depresses mandible and angle of mouth, tenses skin of lower face and anterior neck 5. Occipitofrontalis muscle actions: 9 Semester 4 2023 / 2024  A PLUS in CNS  Written Anatomy Your Guide To A+ Scalp 21) Enumerate layers of Scalp? Grade A 1. Skin 2. Connective tissue (superficial fascia) 3. Aponeurosis (epicranial aponeurosis or galea aponeurotica) 4. Loose areolar tissue 5. Pericranium 22) Arterial supply of scalp & its venous drainage? Grade A++ 10 Semester 4 2023 / 2024