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Mnemonics: Neural Control and Coordination | Biology Class 11 - NEET

1. Parts of a Neuron

Mnemonic: Daisy Nanny Can Now Speak Assamese Marathi Nepali And Sindhi

Mnemonics: Neural Control and Coordination | Biology Class 11 - NEET

Mnemonic Explanation: Mnemonic "Daisy Nanny Can Now Speak Assamese Marathi Nepali And Sindhi" is a helpful way to remember the parts of a neuron. A neuron is a specialized cell in the nervous system that transmits information in the form of electrical and chemical signals.

2. Generation and Conduction of Nerve Impulse

Mnemonic: "Polar Balance NK , Steve Deploarise AP & Nerve Repolarise "

Mnemonic Explanation:

Generation and Conduction of Nerve ImpulseGeneration and Conduction of Nerve Impulse

  1. Polar - Polarization: Resting state of the neuron with a polarized membrane.
  2. Balance : Sodium-Potassium Pump maintains balance (3 Na+ out, 2 K+ in).
  3. Steve: Stimulus causes the membrane to become permeable to Na+.
  4. Depolarise: Depolarisation: Rapid Na+ influx causes depolarization at site A.
  5. AP : Action potential propagates as current flows to site B.
  6. Nerve Repolarise: Repolarization restores resting potential via K+ efflux.

3. Parts of the Brain

Mnemonic:

  • Forebrain: HTC Mobiles
  • Midbrain: CC to mail
  • Hindbrain: PCM subjects

Mnemonics: Neural Control and Coordination | Biology Class 11 - NEET

Mnemonic Explanation: Mnemonics "HTC Mobiles," "CC to mail," and "PCM subjects" can help you remember the major parts of the brain.

The document Mnemonics: Neural Control and Coordination | Biology Class 11 - NEET is a part of the NEET Course Biology Class 11.
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FAQs on Mnemonics: Neural Control and Coordination - Biology Class 11 - NEET

1. What are the main parts of a neuron and their functions?
Ans. A neuron primarily consists of three main parts: the cell body (soma), dendrites, and axon. The cell body contains the nucleus and organelles, supporting the neuron's metabolic activity. Dendrites receive signals from other neurons and transmit them to the cell body. The axon conducts electrical impulses away from the cell body to other neurons or muscles.
2. How is a nerve impulse generated and conducted along a neuron?
Ans. A nerve impulse is generated when a neuron is stimulated by a signal that changes its membrane potential. This process involves the opening of voltage-gated sodium channels, allowing sodium ions to rush into the neuron, causing depolarization. The impulse travels along the axon as a wave of depolarization, followed by repolarization, facilitated by the opening of potassium channels. This rapid change in membrane potential is known as an action potential.
3. What are the key parts of the brain and their roles?
Ans. The key parts of the brain include the cerebrum, cerebellum, and brainstem. The cerebrum is responsible for higher brain functions, including thought, memory, and voluntary movement. The cerebellum coordinates balance and motor control, while the brainstem regulates essential functions such as breathing, heart rate, and sleep-wake cycles.
4. What is the role of myelin in nerve impulse conduction?
Ans. Myelin is a fatty substance that insulates axons, allowing for faster conduction of nerve impulses. It enables the action potential to jump between the nodes of Ranvier (gaps in the myelin sheath) in a process called saltatory conduction, which speeds up the transmission of signals along the neuron.
5. How do neurons communicate with each other?
Ans. Neurons communicate through a process called synaptic transmission. When an action potential reaches the end of an axon, it triggers the release of neurotransmitters from synaptic vesicles into the synaptic cleft. These neurotransmitters bind to receptor sites on the dendrites of the receiving neuron, leading to the generation of a new nerve impulse if the signal is strong enough.
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