Nervous System and Neurons

Erection occurs after activation of the parasympathetic nervous system.

A synapse is the junction between two neurons where nerve impulses are transmitted via neurotransmitters.

Spinal nerves are included in peripheral nervous system.

Grey matter is rich in cytons.

These neurons fire in bursts. They generate action potentials for a brief time period at the onset of a stimulus and regardless of stimulus amplitude or duration, and hence behave as signal detectors. Typical example are retinal ganglion cells (neurons).

 The nervous system combines information from the different senses (vision, hearing touch, etc), and each part of the brain combines information from many other parts of the brain. All this take place because neurons have dendrites, which are designed to combine or integrate information.

Because there is only sufficient neurotransmitter available in a nerve ending for a minute or so of continued released, the biosynthesis of new neurotransmitter to fill the recycled neurotransmitter vesicle is necessary for continued availability of neurotransmitter for release.

It is the involuntary part of the peripheral nervous system.

Neurons are the structural and functional unit of human nervous system.

It is present in the grey matter of central nervous system.

In pseudounipolar neurons, cyton bears a single process which bifurcates to form an axon and a dendron.

In retina, bipolar neurons are present.

A wave of electrochemical disturbance that passes along the elements of nervous system during the conduction of an excitation is called nerve impulse.

A narrow intercellular space present between two neurons in the region of synapse is known as synaptic cleft.

Axons of neurons covered by non-nervous cells are called glia.