Neural Control and Coordination NEET PYQ — The Ion-Swap Traps That Decide This Chapter (2015-2026)
Neural Control and Coordination NEET PYQ (2015-2026). Why the Eye, Ear and Reflex Arc are deleted, the action-potential ionic-phases table, the brain-parts function table, and 12 PYQs.
The Syllabus Shrank. The Questions Got Harder. Here's Exactly Where They Come From Now.
Neural Control and Coordination just became a smaller chapter that hits harder. With the Eye, Ear, and Reflex Arc gone, the testable material shrank sharply — but the chapter still delivers 2-3 questions every year. That combination makes it one of the highest-ROI chapters in NEET Human Physiology: fewer pages, same weightage, so the density of exam-critical facts per page is extreme.
What survived is the hard part: the electrochemistry of the nerve impulse and the anatomy of the brain. The testing ratio now leans about 55% physiology (action potential, synapse) to 45% structure (brain, neuron). Rote memorisation of sensory anatomy has been entirely replaced by the need to understand dynamic processes — the exact sequence of ion-channel activation, the precise stoichiometry of the sodium-potassium pump.
And the format turned lethal. The examiners now favour Assertion-Reason and two-statement setups that hinge on a single swapped word — "efflux" for "influx," "sodium" for "potassium," "pre-synaptic" for "post-synaptic." One inverted term flips the whole answer. Passive reading dies here; exact NCERT-line recall wins. We analysed every Neural Control question NEET has asked from 2015 to 2026. This is part of Logic Bloom's NEET PYQ analysis series.
| 🎯 We analyzed every NEET Neural Control question of the decade — and flagged every deleted topic. The app has the current-syllabus set ready to practice. | |
|---|---|
| This chapter is mechanism-and-diagram driven — you master it by tracing ion flow and mapping the brain, not by re-reading. Logic Bloom's Playground turns it into interactive practice: walk an action potential through its phases and watch Na⁺ rush in then K⁺ rush out, fire a chemical synapse step by step, label the brain regions and their functions. Then drill every current-syllabus PYQ. When an efflux-vs-influx swap or a medulla-vs-cerebellum mix-up catches you, TarQ teaches the fix, and your Mistake Book logs it. | Get the app → Free to start. |
First: What NOT to Study (Deleted from the Syllabus)
| 📌 Deleted — Do Not Revise These | |
|---|---|
| Eye — full anatomy & physiology | Retina, fovea, blind spot, iris, cornea, phototransduction, rods/cones. All gone. Historically ~7 questions came from here. |
| Ear — full anatomy & mechanics | Organ of Corti, cochlea, Eustachian tube, ossicles. Deleted. |
| Reflex Action & Reflex Arc | The receptor-effector reflex pathway and grey-matter horn cells. Deleted. |
This is the single most important thing to know about this chapter now. Roughly half its historical questions came from topics that no longer exist. Studying the eye and ear from old material or senior notes is pure wasted time. Everything below is the current, testable core.
Where the Questions Come From Now (Active Syllabus)
| Sub-topic | Status | Priority |
|---|---|---|
| CNS — brain anatomy & functions | Active | Very High |
| Neuron structure & types | Active | Very High |
| Nerve impulse (resting/action potential) | Active — surging | Very High |
| Synapse & synaptic transmission | Active | High |
| Autonomic NS (sympathetic/parasympathetic) | Active (implicit) | Moderate |
| Sensory reception (Eye/Ear) | DELETED | Do not study |
| Reflex arc | DELETED | Do not study |
The ionic basis of the nerve impulse is surging. Because the testable material shrank, examiners now dissect the exact sequence of voltage-gated channel operations and the precise Na⁺/K⁺ pump stoichiometry far more aggressively than before. This is where the marks concentrate.
The Format Shift: One Swapped Word Decides the Mark
| Era | Dominant Format |
|---|---|
| 2015-2019 | Single-correct factual recall (one brain function, one cell fact) |
| 2020-2023 | Match-the-column (four facts at once) |
| 2024-2026 | Assertion-Reason & two-statement (evaluate independent NCERT lines) |
The modern trap is linguistic, not conceptual. A two-statement question won't test an idea you don't know — it'll take one you do and swap a single term. "Repolarisation is due to efflux of sodium" (should be potassium). "The resting membrane is more permeable to sodium" (should be potassium). "Na⁺/K⁺ pump moves 2 Na⁺ out, 3 K⁺ in" (it's 3 out, 2 in). One inverted word makes the statement false, and the reading burden under time pressure is exactly the point.
| 🎯 Depolarisation is sodium IN. Repolarisation is potassium OUT. Swap those two ions and you fail the most-tested concept in the chapter. | |
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| The ion-swap trap. The action potential runs on two ions moving in opposite directions at different moments, and the examiners live in that gap. Depolarisation = Na⁺ rushes IN (voltage-gated Na⁺ channels open), potential climbs from −70 mV toward +30 mV. Repolarisation = Na⁺ channels close, K⁺ rushes OUT (voltage-gated K⁺ channels open), potential falls back. A two-statement question will calmly tell you "repolarisation is due to efflux of sodium" and wait for you to nod. The fix is to lock the pairing cold: DEpolarise = IN (Na⁺), REpolarise = OUT (K⁺). And the resting Na⁺/K⁺ pump is separate — it runs continuously (3 Na⁺ out, 2 K⁺ in) to maintain the baseline, NOT during depolarisation, which is passive. Logic Bloom's Playground animates each phase so you see which ion moves when — with TarQ explaining the channel states. Then drill every PYQ and let your Mistake Book catch the swaps. | Fire an action potential → Free to start. |
The Action-Potential Reference — The Ordered Ionic Phases
| 🎯 The Nerve Impulse, Phase by Phase | |||
|---|---|---|---|
| Phase | Ion movement | Channels | Potential |
| Resting | No net flow (pump active) | Voltage-gated closed; K⁺ leak | −70 mV (polarised) |
| Depolarisation | Na⁺ INFLUX | Na⁺ open, K⁺ closed | −70 → +30 mV |
| Repolarisation | K⁺ EFFLUX | Na⁺ close, K⁺ open | +30 → −70 mV |
| Hyperpolarisation | Continued K⁺ efflux | K⁺ channels slow to close | Dips below −70 mV |
| Recovery | Pump restores gradient | Na⁺/K⁺ ATPase (3 out, 2 in) | Back to −70 mV |
Two facts the examiners lean on: the resting membrane is more permeable to K⁺ and nearly impermeable to Na⁺ (and completely impermeable to the negatively charged proteins inside). And hyperpolarisation happens because the K⁺ channels are slow to close — a subtle detail that shows up in assertion-reason setups.
The Brain-Parts Function Table — Memorise the Exact Pairings
| 🎯 Each Region and Its Precise NCERT Function | |
|---|---|
| Cerebral cortex (association areas) | Intersensory associations, memory, communication |
| Thalamus | Major coordinating centre for sensory & motor signalling |
| Hypothalamus | Thermoregulation, hunger, thirst, circadian rhythm; links nervous & endocrine |
| Limbic system (amygdala, hippocampus) | Sexual behaviour, emotion — rage, fear, pleasure, motivation |
| Midbrain (corpora quadrigemina) | Visual (superior) & auditory (inferior) reflexes |
| Pons | Interconnects brain regions; pneumotaxic centre (respiration) |
| Cerebellum | Posture, balance, fine motor coordination |
| Medulla oblongata | Respiration, cardiovascular reflexes, gastric secretion |
The two pairings students swap most: Medulla (vital involuntary reflexes — breathing, heartbeat) vs Cerebellum (posture and balance). And the Limbic system is emotion/motivation — NOT movement or fibre-tract connection, the exact mis-pairing NEET 2018 used. Also lock the brain stem = midbrain + pons + medulla (NOT cerebrum, NOT cerebellum) — a guaranteed trap.
The Chemical Synapse — Sequence and Facts
| 🎯 Chemical Synaptic Transmission (in order) | |
|---|---|
| 1. | Action potential reaches the axon terminal |
| 2. | Voltage-gated Ca²⁺ channels open |
| 3. | Synaptic vesicles fuse with the pre-synaptic membrane |
| 4. | Neurotransmitter released into the synaptic cleft |
| 5. | Binds receptors on the POST-synaptic membrane |
The two facts that flip statements: receptors sit on the POST-synaptic membrane (not pre-), and electrical synapses are FASTER than chemical ones (they skip diffusion) — students routinely mark the reverse. Calcium is the trigger for vesicle fusion, mirroring its role at the neuromuscular junction.
The Signature NTA Traps
| 📌 Where Students Lose Marks | |
|---|---|
| The efflux/influx swap | Depolarisation = Na⁺ influx; repolarisation = K⁺ efflux. Statements swap the ion or the direction. |
| Pump timing | The Na⁺/K⁺ pump maintains RESTING potential continuously; depolarisation is passive diffusion, not the pump. And it's 3 Na⁺ out, 2 K⁺ in. |
| Medulla vs cerebellum | Medulla = respiration/cardiac; cerebellum = balance/posture. Both hindbrain, routinely swapped. |
| Synapse speed | Electrical synapses are FASTER than chemical. The reverse is a planted false statement. |
| Unmyelinated ≠ no Schwann cell | Unmyelinated PNS fibres ARE enclosed by Schwann cells — the cells just don't coil into a myelin sheath. |
| Glial myelination | Schwann cells myelinate the PNS; oligodendrocytes myelinate the CNS. Astrocytes and other cells are distractors. |
Cross-Chapter Integration
| Combination | What It Tests |
|---|---|
| Neural + Chemical Coordination | The hypothalamus bridges both — neurosecretory (endocrine) plus thermoregulation and autonomic control (neural). |
| Neural + Locomotion & Movement | The neuromuscular junction as a chemical synapse; Ca²⁺ triggering vesicle fusion mirrors Ca²⁺ in muscle contraction. |
| Neural + Biomolecules | Neurotransmitters as amino-acid derivatives; myelin as sphingomyelin; receptors as membrane proteins. |
| Neural + Cell Transport | Action potential relies on active transport (pump) and facilitated diffusion (voltage-gated channels). |
NEET 2027 / 2028 Predictions
Top 5 Sub-Topics Most Likely to Appear
| # | Predicted Topic | Why |
|---|---|---|
| 1 | Resting-membrane permeability | Multi-statement on K⁺-permeable, Na⁺-impermeable, protein-impermeable — a term-swap goldmine. |
| 2 | Limbic & midbrain anatomy | Match-column with amygdala, hippocampus, corpora quadrigemina, thalamus. |
| 3 | Chemical-synapse sequence | Order the five steps (AP → Ca²⁺ → fusion → release → binding). |
| 4 | Brain-stem composition | Identify midbrain + pons + medulla, excluding cerebellum/cerebrum. |
| 5 | Corpus callosum vs association areas | Structural connector vs functional memory/communication role. |
Likely Multi-Statement Setup
| Format | The Trap |
|---|---|
| "How many are correct" on nerve conduction | Expect planted falsehoods like "resting membrane more permeable to Na⁺" or "pump moves 2 Na⁺ out, 3 K⁺ in." One inverted word per statement. |
Neural Control NEET PYQs — 12 Questions You Must Attempt
These 12 reflect the current active syllabus (no deleted Eye/Ear/Reflex content) and the traps NEET deploys most. For each, the trap is explained.
| 📌 12 Must-Attempt NEET Neural Control PYQs — With the Trap Explained | |
|---|---|
| 1. Brain Stem (2024, two-statement) | S-I: cerebral hemispheres connected by corpus callosum. S-II: brain stem = medulla, pons, and cerebrum. Answer: I correct, II incorrect. Trap: Cerebrum is NOT in the brain stem (it's midbrain + pons + medulla). |
| 2. Repolarisation Ion (2025, two-statement) | S-I: depolarisation is Na⁺ influx. S-II: repolarisation is efflux of sodium ions. Answer: I correct, II incorrect. Trap: Repolarisation is K⁺ efflux, not sodium. The single-word swap. |
| 3. Emotion Centres (2023) | Parts regulating sexual behaviour, excitement, rage, fear? Answer: Limbic system and hypothalamus. Trap: Attributing emotion to the brain stem or midbrain instead of the deep forebrain. |
| 4. Synapse Speed (2022) | Select the INCORRECT statement on synapses. Answer: "Chemical is always faster than electrical." Trap: Electrical synapses are faster — they skip chemical diffusion. |
| 5. Nissl Bodies (2018) | Nissl's bodies are mainly composed of? Answer: Free ribosomes and RER. Trap: Confusing them with smooth ER or lipid structures. |
| 6. Resting Permeability (2025 archetype) | At rest, the axonal membrane is? Answer: More permeable to K⁺, nearly impermeable to Na⁺. Trap: Reversing it — the resting membrane has a heavy K⁺ leak. |
| 7. Myelin Producers (2017) | Myelin sheath is produced by? Answer: Schwann cells and oligodendrocytes. Trap: Distractors add astrocytes or osteoclasts (neither myelinates). |
| 8. Brain-Parts Match (2025) | Match Pons / Hypothalamus / Medulla / Cerebellum to functions. Answer: Pons→connects regions; Hypothalamus→neurosecretory; Medulla→respiration/gastric; Cerebellum→posture/balance. Trap: Swapping medulla and pons roles. |
| 9. Unmyelinated Neurons (2026, two-statement) | S-I: Nissl's granules in dendrites and cell body. S-II: unmyelinated PNS neurons are NOT enclosed by Schwann cells. Answer: Only I correct. Trap: Unmyelinated fibres ARE enclosed by Schwann cells — they just lack the myelin coil. |
| 10. Intracellular Cation (mechanism) | Most abundant intracellular cation? Answer: K⁺. Trap: Confusing high extracellular Na⁺ with high intracellular K⁺. |
| 11. Incorrect Pairing (2018) | Which region is INCORRECTLY paired with its function? Answer: "Limbic system — fibre tracts that control movement." Trap: Limbic = emotion/motivation, not movement. |
| 12. Synapse Statements (predicted multi-statement) | How many are correct for a chemical synapse? (a) cleft separates the neurons (b) neurotransmitter binds pre-synaptic receptors (c) vesicles in axon terminals (d) AP jumps across the cleft. Answer: Two (a and c). Trap: (b) puts receptors pre-synaptic (should be post-); (d) describes an electrical synapse. |
| 🎯 These are 12 of the 200+ NEET Neural Control PYQs in the app — current-syllabus only. Drill all of them. | |
|---|---|
| Every question above is inside Logic Bloom, mapped across every year — with the deleted Eye/Ear/Reflex content stripped out so you never waste time on it. Walk the action potential, sequence the synapse, map the brain. When a trap catches you, TarQ teaches the reasoning — not just the answer. Your Mistake Book tracks exactly which trap cost you — the ion swap, the medulla-cerebellum mix-up, the synapse-speed reversal. Then take it into Battleground — 1v1 duels under real exam pressure. Get Logic Bloom — Free to start → |
How to Prepare Based on the Data
| 📌 Data-Driven Strategy for NEET Neural Control | |
|---|---|
| Skip the deleted topics entirely | No Eye, no Ear, no Reflex Arc. Half the old questions came from here — studying them is pure wasted time. Confirm against current NCERT. |
| Lock the action-potential pairing cold | DEpolarise = Na⁺ IN; REpolarise = K⁺ OUT; pump = 3 Na⁺ out / 2 K⁺ in, maintaining rest. This is the surging, most-tested area. |
| Memorise the brain-parts table exactly | Especially medulla vs cerebellum, and brain stem = midbrain + pons + medulla. These are guaranteed match-column and statement traps. |
| Read two-statement questions word by word | The trap is one swapped term — efflux/influx, sodium/potassium, pre/post-synaptic. Slow, precise reading beats speed here. |
| Sequence the chemical synapse | AP → Ca²⁺ channels → vesicle fusion → neurotransmitter release → post-synaptic binding. A likely order-arrangement question. |
| Animate it, don't memorise it flat | Logic Bloom's Playground turns the impulse and synapse into interactive practice — watch ions move, sequence the steps, map the brain — with TarQ teaching the reasoning. Drill every current-syllabus PYQ, with your Mistake Book catching the ion and anatomy swaps. Then test under pressure in Battleground. Free to start. |
Building your NEET Human Physiology base? This is a shrunken, high-density, high-ROI chapter.
| 🎯 2-3 questions a year. Smaller syllabus, same weightage. Physiology-heavy. The patterns are here. The practice is in the app. | |
|---|---|
| 🎮 Playground Understand through practice — with TarQ |
Every Neural Control concept as interactive practice — fire an action potential and watch Na⁺ and K⁺ move phase by phase, sequence a chemical synapse, label the brain and its functions. Drill every current-syllabus PYQ across every year. When you're stuck, TarQ teaches the reasoning. Mistake Book catches the ion-swap and anatomy slips before the exam does. Get the app → |
| ⚔️ Battleground Score through practice — 1v1 duels |
NEET Biology rewards fast, exact recall under pressure. Battleground trains exactly that — timed 1v1 duels across Physics, Chemistry, Biology, ELO climbing through 6 tiers. Get the app → |
| Understand through games. Score through practice. Get Logic Bloom — Free to start → |
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FAQs — Neural Control and Coordination NEET PYQ
Q1: How many questions come from Neural Control and Coordination in NEET?
The chapter reliably delivers 2-3 questions per NEET. After the NCERT rationalisation shrank it, the weightage held while the page count dropped, making it one of the highest-ROI chapters in Human Physiology — a high density of exam-critical facts per page.
Q2: Are the eye and ear still in the NEET Neural Control syllabus?
No. The NCERT rationalisation deleted the entire Sensory Reception section — the anatomy and physiology of the eye and the ear — along with the Reflex Arc. These historically accounted for a large share of the chapter's questions and are no longer testable, so they should not be studied. Always confirm against the current NCERT edition.
Q3: What is the difference between depolarisation and repolarisation?
Depolarisation is caused by the influx of sodium ions when voltage-gated Na⁺ channels open, shifting the membrane potential from about −70 mV toward +30 mV. Repolarisation is caused by the efflux of potassium ions when Na⁺ channels close and voltage-gated K⁺ channels open, returning the potential toward −70 mV. Swapping these two ions is the most common NEET trap in this chapter.
Q4: How does the sodium-potassium pump work in a neuron?
The Na⁺/K⁺ pump uses ATP to move three sodium ions out of the axon for every two potassium ions it moves in, against their concentration gradients. It runs continuously to maintain the resting potential of about −70 mV. Importantly, depolarisation itself is a passive process driven by diffusion through voltage-gated channels, not by the pump.
Q5: Are there actual NEET Neural Control PYQs to practice?
Yes — this article contains 12 representative NEET PYQs from the current syllabus, with traps explained, across single-correct, assertion-reason, two-statement, and multi-statement formats. For the full set of 200+ NEET Neural Control PYQs (deleted topics stripped out) with TarQ teaching and a Mistake Book, download Logic Bloom. Free to start.