Nervous Tissue

The nervous tissue is composed of densely packed nerve cells commonly known as neurons. The neurons are capable of conducting nerve impulses. The nervous tissue arises from ectoderm of a growing embryo.


  • There are more than 100 billion neurons in a nervous system.
  • They vary in shape and size.
  • All neurons have 3 main parts – a cell body, few dentrites, and an axon.