Nervous System Review

Front

What is Resting Potential?

Back

Resting Potential is the electrical charge difference across the neuron's membrane when it is not actively transmitting a signal, typically around -70 mV.

Front

What is the Central Nervous System (CNS) made of?

Back

The Central Nervous System (CNS) is made up of the brain and spinal cord.

Front

What types of cells are found in the Central Nervous System (CNS)?

Back

The types of cells found in the CNS include Astrocytes, Microglia, and Ependymal cells.

Front

What happens during depolarization in a neuron?

Back

During depolarization, the charge inside the neuron becomes more positive as sodium ions enter the cell, reversing the resting potential.

Front

What is the function of Dendrites?

Back

Dendrites are responsible for receiving information from other neurons and transmitting it to the cell body.

Front

What is an Action Potential?

Back

An Action Potential is a rapid rise and fall in voltage or membrane potential across a cellular membrane, allowing for the transmission of signals along neurons.

Front

What role do Astrocytes play in the CNS?

Back

Astrocytes support neurons, maintain the blood-brain barrier, and regulate blood flow in the brain.

Front

What is the function of Myelin Sheath?

Back

The Myelin Sheath insulates axons and increases the speed of electrical signal transmission along the neuron.

Front

What is the difference between the Central Nervous System and Peripheral Nervous System?

Back

The Central Nervous System consists of the brain and spinal cord, while the Peripheral Nervous System includes all the nerves outside the CNS.

Front

What is the role of Microglia in the CNS?

Back

Microglia act as the immune cells of the CNS, protecting against pathogens and clearing debris.