eguruchela

The Neural tissue


Neural tissue exerts most control over the body's response to changing conditions. Neurons are the excitatory cells and the unit of the neural system.

The neuroglial cell which constitute the rest of the neural system protect and support neurons.

Neuroglea make up more than onehalf the volume of neural tissue in our body.

When a neuron is suitably stimulated, an electrical disturbance is generated that rapidly travels along its plasma membrane.

Arrival of the disturbance at the neuron’s endings, or output zone, triggers events that may cause stimulation or inhibition of adjacent neurons and other cells

Neural tissue

Dendrite

Dendrite is a highly branched processes and responsible for receiving information from other neurons and synapses. Information of other neurons is provided by dendrites to connect with its cell body.

Axon membrane

The axon membrane may be defined as the surface membrane of the axonal process from the point at which it emerges from the axon hillock of the neuronal perikaryon to the axonal terminal or nerve ending that forms a synapse on another cell.

Synapse

The junction between the axon of one neuron and the dendrite of another, through which the two neurons communicate.

Nerve fiber

The axon is also called nerve fibre. It is the portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells. Some axons may be quite long (from the spinal cord down to a toe).

Function of Neural tissue

  • Neurons generate and carry out nerve impulses.
  • Produce electrical signals that are transmitted across distances, accomplished by secreting chemical neurotransmitters.
  • Responds to stimuli
  • Carries out communication and integration
  • Provides electrical insulations to nerve cells and removes debris
  • Carries messages from other neurons to the cell body