This category explains the electrical properties of neurons, including resting potential, how action potentials are generated, and how signals are transmitted between cells.
Action potentials travel in only one direction due to the refractory period, which prevents backflow.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The sodium-potassium pump moves sodium (Na⁺) out of the neuron and potassium (K⁺) into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
During depolarization, sodium ions (Na⁺) enter the neuron, causing a change in membrane potential.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
Saltatory conduction occurs in myelinated neurons, where impulses jump between nodes of Ranvier, increasing conduction speed.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The sodium-potassium pump maintains the resting membrane potential by actively transporting Na⁺ out and K⁺ into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The nodes of Ranvier allow saltatory conduction, where the nerve impulse jumps from node to node, increasing conduction speed.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The peripheral nervous system (PNS) includes sensory neurons that bring information to the CNS and motor neurons that relay commands from the CNS.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
During depolarization, sodium ions (Na⁺) rush into the neuron, changing the membrane potential.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
Schwann cells form the myelin sheath around axons, aiding in faster nerve impulse conduction.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The sodium-potassium pump maintains the resting membrane potential by actively transporting Na⁺ out and K⁺ into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The myelin sheath insulates the axon and speeds up nerve impulse conduction through saltatory conduction.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The sodium-potassium pump maintains the resting membrane potential by actively transporting Na⁺ out and K⁺ into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
