Neuron Flashcards
Basic unit of nervous system is called?
Neuron
Name two types of nervous system
CNS &PNS
What is in CNS
Brain and spinal cord
What is PNS?
motor And sensory neurons.
Name three types of neuron cells? In difficult wording?
1.Inter (Association neuron)
2.Sensory (Afferent neuron)
Motor (Efferent neuron)
Inter neurons are present in brain only.
Divide PNS
1.Autonomic(involuntary )
2.Somatic(Voluntry)
Divide Autonomic
1.Sympathetic
2.Parasympathetic
Membrane of neuron called
Neurolema
Name main parts of neuron
1.dendrites
2.Soma
3.Axon
Dendrites carry nerve impulse to the neuron while axon sends out of the
Cell body of neuron called as
Soma
It is found btw dendrite and axon
Cell body contains almost organelle i.e.nucleus.
layer over neuron cell is?
Mylein sheath.
It is insulator
what is colour of axon?
White
Due to presence of mylein sheath over it.
The part where two neurons meet is called?
Synapses (junction)
What is reflex action
A involuntRy response to sudden stumili which could cause damage to body if any action is not taken
Path of reflex action is called reflex arc.
what is neurotransmitter ?
The chemicals which are released from neuron to Effector to do action or stop it.
They are chemical signzls generally