psycholgy
1. What is a neuron? o The individual nerve cell, comprised of the axon, dendrites, and cell body.
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is no longer mostly negative on the inside.
5. How do neurons fire? o Sodium ions pump in, depolarizing the axon, before the polarization returns.
1. What is a neuron? o The individual nerve cell, comprised of the axon, dendrites, and cell body.
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is no longer mostly negative on the inside.
5. How do neurons fire? o Sodium ions pump in, depolarizing the axon, before the polarization returns.
1. What is a neuron? o The individual nerve cell, comprised of the axon, dendrites, and cell body.
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is no longer mostly negative on the inside.
5. How do neurons fire? o Sodium ions pump in, depolarizing the axon, before the polarization returns.
1. What is a neuron? o The individual nerve cell, comprised of the axon, dendrites, and cell body.
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is no longer mostly negative on the inside.
5. How do neurons fire? o Sodium ions pump in, depolarizing the axon, before the polarization returns.
1. What is a neuron? o The individual nerve cell, comprised of the axon, dendrites, and cell body.
2. How many neurons in the nervous system? o 86 billion
3. Function of cell body, dendrites, and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites.
4. Define polarization/depolarization. o Polarization: Resting state of neuron, semipermeable. o Depolarization: Stimulated state, neuron is