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Biology · Topic 46

Nervous system: neurons, synapses and the brain

Sub-topic 1 2026 · National One-Eighth Free

The central nervous system (spinal cord and spinal nerves)

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Sub-topic 2 2026 · National Preliminary Premium

Cranial nerves of the human nervous system

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Sub-topic 3 2026 · National Preliminary Premium

Cranial nerves of the human nervous system

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Sub-topic 4 2026 · National Preliminary Premium

Cranial nerves of the human nervous system

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Sub-topic 5 2026 · National Quarterfinal Premium

Multipolar neurons: many dendrites and a single axon

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Sub-topic 6 2026 · National Quarterfinal Premium

Schwann cells: forming the myelin sheath in the peripheral nervous system

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Sub-topic 7 2023 · National One-Eighth Premium

Electrical synapses: organisms, direction and transmitting agent

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Sub-topic 8 2024 · National One-Eighth Premium

Dendrites as the message-receiving part of a neuron

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Sub-topic 9 2026 · National Preliminary Premium

Riddle: the occipital lobe, the brain's visual processing center

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Sub-topic 10 2026 · National Preliminary Premium

The medulla oblongata: control of vital involuntary body functions

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Sub-topic 11 2026 · National Preliminary Premium

The medulla oblongata: control of vital involuntary body functions

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Sub-topic 12 2026 · National Preliminary Premium

The medulla oblongata: control of vital involuntary body functions

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Sub-topic 13 2024 · National Preliminary Premium

Problem of the day: the patellar (knee-jerk) reflex arc

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Sub-topic 14 2003 · National Semifinal Premium

The ganglion: a mass of nervous tissue with synapses and cell bodies

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Sub-topic 15 2014 · National Final Premium

The hypothalamus's role in the limbic system's emotion/memory circuitry (true/false)

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Sub-topic 16 2016 · National One-Eighth Premium

The reflex arc as the simplest nervous pathway

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Sub-topic 17 2016 · National Preliminary Premium

Riddle: the spinal cord, from the embryonic neural tube

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Sub-topic 18 2021 · National Preliminary Premium

Sodium and potassium ions are the key cations of the neuronal action potential

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Sub-topic 19 2021 · National Preliminary Premium

The node of ranvier is located in the nervous system, along myelinated axons

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Sub-topic 20 2021 · National Preliminary Premium

The negative resting membrane potential arises from differential na+/k+ ion distribution

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Sub-topic 21 2022 · National Preliminary Premium

True or false: during depolarization, negative charge is inside and positive charge is outside the fiber

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Sub-topic 22 2022 · National Preliminary Premium

True or false: during depolarization, positive charge is present on both sides of the fiber

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Sub-topic 23 2022 · National Preliminary Premium

True or false: during depolarization, negative charge is present on both sides of the fiber

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