Structure and Function of a Neuron. Flashcards
What are neurons?
Cells that are specialised to carry neural information throughout the body.
What are the three types of neurons?
Sensory neuron.
Relay neuron.
Motor neuron.
What do neurons typically consist of?
A cell body, dendrites and an axon.
Where are dendrites found on neurons?
On the tips of all the spikey bits.
How do dendrites work?
Dendrites at one end of the neuron receive signals from other neurons or sensory receptors.
They are connected to the cell body which is the control centre of the neuron.
Once a neural signal has been passed from a dendrite to the cell body what happens?
The impulse is carried along to con, where it terminated
What does an axon look like on an image?
The singular string that connect all of the components together.
What is there in many nerves, including those in the brain and spinal chord?
An insulating layer around the axon.
What is the insulating layer found around the axon called?
The myelin sheath,
What will happen if the myelin sheath is damaged?
Impulses slow down.
How long is a neuron?
Can vary from a few mm to a m.
