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PNB 2XB3: Neuroanatomy and Neurophysiology Exam Questions And Answers

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42 pages

Written in 2023/2024

Grade A+

wisdomspeaks

Coronal: - ️️lane of section that is parallel to the face, how you put on a crown, divides head to anterior (front) and posterior (back) Difference between MS and Guillain Barre? - ️️Question Multiple Sclerosis Guillain Barre What myelin it attacks CNS PNS Can you have a full recovery No Yes Rarity Common Rare Symptoms MS: Problems with vision, speech, tactile etc. GB: Paralysis, loss of sensation, trouble breathing Biolistic Transfection (Gene Gun) - ️️Take tiny gold partic...

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10 pages

Written in 2024/2025

Grade A+

Brainarium

Pnb 2Xb3 Study Guide | Complete Pnb 2Xb3 Exam Review Questions And Answers 2026/2027

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30 pages

Written in 2026/2027

Grade A+

BravelRadon

Pnb 2Xb3 Exam Complete Package Deal

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3 items

PROFFKERRYMARTIN

This exam prep document for PNB 2XB3 – Neural Development includes 100+ fully accurate and A+ graded questions and answers, aligned with the 2025/2026 neuroscience curriculum. Covered topics include embryonic stem cell differentiation, ectodermal layering (neuroectoderm, mesoderm, endoderm), neurulation stages, floorplate/roofplate roles, spina bifida, neurogenesis, symmetrical/asymmetrical division, and neural crest cell migration. It also explores mechanisms of axon guidance (growth cones, c...

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11 pages

Written in 2024/2025

Grade A+

PROFFKERRYMARTIN

This exam guide contains 100+ fully verified questions and answers for PNB 2XB3 covering the Vestibular and Motor Systems topics for the 2025/2026 academic year. Major subjects include vestibular anatomy (utricle, saccule, semicircular canals), head rotation (yaw, pitch, roll), cupula/endolymph mechanics, vestibulo-ocular reflex (VOR), and disorders such as BPPV, oscillopsia, and positional alcohol nystagmus. The motor section covers the primary and premotor cortex (Brodmann areas 4 and 6), cort...

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7 pages

Written in 2024/2025

Grade A+

PROFFKERRYMARTIN

This detailed midterm guide contains 100+ correct and up-to-date questions with answers for PNB 2XB3 (Midterm 2) on somatosensory neuroscience, based on the 2025/2026 curriculum. Key topics include mechanoreceptor types (Merkel, Meissner, Pacinian, Ruffini), dermatome mapping, DCML and anterolateral pathways, nociceptor physiology, A-delta and C-fiber function, pain processing, TRP channels (e.g., TRPV1), referred pain, central and peripheral sensitization, hyperalgesia, allodynia, and cortical ...

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12 pages

Written in 2024/2025

Grade A+

PROFFKERRYMARTIN

PNB 2XB3 Questions and Answers Latest Update 2025/2026 neuroscience - Answers the study of neurons and the nervous systems what fields does neuroscience intersect with? - Answers chemistry, biology, physics, math cns - Answers central nervous system; brain and spinal cord pns - Answers peripheral nervous system; anything not surrounded by bone glial cell functions - Answers 1. myelinating axons 2. maintaining ionic environment 3. responding to damage nissl stain - Answers stains rna to r...

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9 pages

Written in 2024/2025

Grade A+

TutorJosh

PNB 2XB3 Bundled Exams Questions and Answers |100% Pass

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10 items

EmillyCharlotte

PNB 2XB3 - Neural Development Exam Study Guide with Complete Solutions Mitosis - Answer-process of one cell dividing in two (Embryonic) Stem Cells - Answer-precursors to all types of cells Pluripotent - Answer-potential to become any type of cell Ectoderm - Answer-brain and skin (outer layer) Mesoderm - Answer-muscle, blood, bone, cartilage (middle layer) Germline - Answer-sperm and eggs Endoderm - Answer-lung, gut, and liver (inside layer) Day 18 of gestation - Answer-neural plate deve...

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8 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 - Auditory System Study Guide with Complete Solutions Sound waves are ___; compression is __ of a wave, rarefaction is ___ - Answer- longitudinal - move like a slinky; top; bottom Period - Answer-the time taken for one up-down cycle (wavelength) Wavelength - Answer-the distance b/w two peaks/an up-down cycle Universal wave equation - Answer-speed = distance/time = wavelength/period Higher pitch = - Answer-higher frequency - but perception depends on the environment Sound freque...

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8 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 - Central Vision Practice Questions and Answers | 100% Pass For an on-center ganglion cell, what causes it to maximally fire? - Answer-light in the center and darkness in the surround What is the spontaneous level of activity or baseline for a ganglion cell? - Answer- when the entire field is in the dark color opponency - Answer-the center and surround cones can be of different types (red,green,blue...) fixating the eyes on an object - Answer-turning the eyes so that the image f...

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6 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 - Midterm 2: Somatosensory Exam Study Guide with Complete Solutions Merkell cells - Answer-- slowly adapting - 25% of mechanosensory afferents in hand - highest spatial resolution - edges, points, corners, curvature - static indentation ** Meissener - Answer-- rapidly adapting -40% of mechanosensory innervation in hand - skin motion, indentation, low frequency vibrations for textured objects*** - more than 4x more sensitive than Merkell to skin deformation, but larger recepti...

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9 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

Midterm 1 - PNB 2XB3 Exam Study Guide with Complete Solutions Central Nervous System (CNS) - Answer-All parts of nervous system enclosed in bone (spinal cord, brain stem, thalamus, cortex) Peripheral nervous system (PNS) - Answer-All parts not within bone (peripheral nerves) Brainstem - Answer-midbrain (lowest), pons (middle), medulla (top) Dermatomes - Answer-spinal nerves innervate sections of the skin, message from certain section of skin is sent to certain section of spine - skin co...

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28 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 Neuroscience Midterm Review Study Guide with Complete Solutions Central Nervous System (CNS) - Answer-all parts of the nervous system within bone (spinal cord, brainstem, thalamus, cortex, etc) Peripheral Nervous System (PNS) - Answer-all parts not within bone (spinal nerves, cranial nerves) Cranial nerve - Answer-One of twelve pairs of nerves arising from the brainstem that carry sensory information towards the central nervous system Spinal nerve - Answer-A nerve which carries...

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5 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 Midterm 2 Review Study Guide with Complete Solutions 4 Sections of the spinal cord - Answer-1. Cervical 2. Thoracic 3. Lumbar 4. Sacral A beta Fibers - Answer-Large sensory fibers involved in rapidly transmitting sensation. Responds to touch (around 50 m/s) A delta Fibers - Answer-Slower fiber that responds to sharp pain ( around 10m/s) C fibers - Answer-Slow fiber that is associated with dull pain (around 1m/2s) Dorsal Column Medial Lemniscus Pathway - Answer-Pathway that r...

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24 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 Lecture 4: Somatosensory System Exam Study Guide with Complete Solutions dermatome - Answer-the area of skin supplied by the sensory axons of a single spinal nerve dorsal horn - Answer-the POSTERIOR column of grey matter in the spinal cord (shape differs depending on spinal segment) - contains SENSORY neuron cell bodies ventral horn - Answer-the ANTERIOR column of grey matter in the spinal cord (shape differs depending on spinal segment) - contains MOTOR neuron cell bodies 3 ty...

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8 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 FULL Study Guide with Complete Solutions A-alpha conduction velocity? - Answer-80-120 m/s A-beta conduction velocity? - Answer-35-75 m/s A-delta conduction velocity? - Answer-5-30 m/s C-fibers conduction velocity? - Answer-0.5-2 m/s A-alpha axon diameter? - Answer-13-20 microns A-beta axon diameter? - Answer-6-12 microns A-delta axon diameter? - Answer-1-5 microns C-fibers axon diameter? - Answer-0.2-1.5 microns Synaptic cleft width? - Answer-20-40 microns Number of neurons i...

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15 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 Exam Study Guide with Complete Solutions Neuroscience - Answer-study of the neurons and nervous systems how many neurons are in the brain and what is the power of the brain - Answer- 100 billion neurons, and it is about 20W how large are neurons - Answer-10 microns Central Nervous System (CNS) - Answer-all the parts within bone (spinal cord, thalamus, brainstem, cortex...) Peripheral Nervous System (PNS) - Answer-not within bone (peripheral nerves) brainstem - Answer-includes t...

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57 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 - Vestibular and Motor System Questions and Answers |100% Pass What are the three ways in which the head can rotate in? - Answer-Yaw: z axis (saying no) Pitch: y axis (saying yes) Roll: x axis What are the semicircular canals filled with? - Answer-endolymph What is the vestibular labyrinth composed of? what are the functions of each? - Answer-- utricle and saccule: detect head tilt and linear acceleration - semicircular canals: detect head rotation What are the two otholith o...

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5 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 - Neuroanatomy & Neurophysiology Questions and Answers |100% Pass How many neurons are in the human brain? - Answer-about 100 billion What percentage of the brain do we use? - Answer-100% What is the brain's power in watts? - Answer-20 W What is the size of a typical neuron? - Answer-10 um (cell body diameter) What is the most common neurotransmitter? - Answer-Glutamate What is the voltage of a neuron at rest? - Answer--65mV What is the name of the neuro-electrical impulse? ...

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51 pages

Written in 2024/2025

Grade A+

EmillyCharlotte

PNB 2XB3 Questions and Answers | Latest Update 2024/2025

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11 items

Axpert