3 interactive concept widgets for Neural Control and Coordination. Drag any slider, change any number, and watch the formula and the answer update live. Built so you understand how each NEET problem actually works, not just the final number.
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A labelled neuron with six clickable parts. Walk through dendrites, cell body, axon, myelin sheath, nodes of Ranvier, and the synaptic terminal.
A labelled neuron. Click any pin on the diagram or chip in the list to see what each part does and the NEET fact tested about it.
Cell body (cyton)
Contains the nucleus, mitochondria, ribosomes and the Nissl granules (rough endoplasmic reticulum). The metabolic centre of the neuron.
NEET fact
Nissl granules are the hallmark of a neuron cell body. Also called cyton or soma.
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Scrub a slider through one action potential and watch the voltage curve update. See ion movements and channel states at every phase from resting through depolarisation, repolarisation, hyperpolarisation and recovery.
Drag the time slider through one action potential. See exactly what happens to voltage, which ions are moving, and which channels are open at every phase from resting through depolarisation to recovery.
Scrub through one action potential
t = 2.0 ms, V = 30 mV
Voltage
Voltage rises rapidly to about +30 mV. Inside becomes positive.
Ion movement
Na+ rushes IN. Massive Na+ influx along its concentration and electrical gradient.
Channel state
Voltage-gated Na+ channels fully open. Almost no K+ flow yet.
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Click any region of a labelled brain diagram to see its parent division (forebrain, midbrain, hindbrain), its function and the NEET fact tested about it. Covers cerebrum, thalamus, hypothalamus, midbrain, pons, cerebellum and medulla.
A labelled human brain. Click any region in the diagram or chip in the list to see its parent division (forebrain, midbrain, hindbrain), its function, and the NEET fact tested most about it.
Cerebrum
Largest part of the brain. Two hemispheres connected by the corpus callosum. Outer grey cortex has four lobes: frontal (movement, planning), parietal (touch, spatial), temporal (hearing, memory), occipital (vision). Controls voluntary movement, intelligence, memory, language.
NEET fact
Four lobes are NEET-favorite to match with functions. Occipital = vision; temporal = hearing.
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Drag, slide and recompute on the next chapter's widgets.
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