Axon Hillock and Signal Integration Flashcards
What is the primary role of the axon in the nervous system?
Transmitting information within the nervous system
The axon is crucial for communication between neurons and other cells.
Where is the axon hillock located?
At the junction of the cell body and axon
The axon hillock is responsible for integrating incoming signals.
What determines if a neuron will generate an action potential?
Integration of incoming signals at the axon hillock
This integration is essential for the neuron to respond appropriately.
What happens once an action potential is triggered?
Electrical impulses travel rapidly down the axon
This process is key for communicating information to other cells.
What is the structure of the axon?
A hollow tube that transports essential substances
The axon connects the cell body with the axon terminals.
What are the two types of axonal transport?
Anterograde transport and retrograde transport
Each type serves distinct functions in material movement.
What does anterograde transport do?
Moves materials from the cell body to the axon terminals
This includes enzymes and structural proteins necessary for axon function.
What is the function of retrograde transport?
Returns used materials from the axon terminals back to the cell body
This process is important for recycling materials.
How does the axon transmit electrical signals?
Quickly via its outer membrane, akin to a wire
This rapid transmission is essential for effective communication.
What is the nature of substance transport inside the axon?
Slower transport, akin to a pipe system
This ensures the axon remains supplied with necessary materials.
What roles do glial cells play in the nervous system?
Protection and support for neurons
Glial cells also insulate axons with myelin and facilitate neuron communication.
True or False: The axon hillock is responsible for the transmission of electrical impulses.
False
The axon hillock integrates signals; the axon transmits impulses.
