are you a CBSE class 1oth student.because they have the same topic.............
Gap Junction
the brain,spinal cord and the nerves
nervous
When a signal is sent out from the nervous system it is caused a release of a neurotransmitter that releases an action potential.
The spinal cord
epithelial,connective,muscle,nervous
Nervous system
Nervous tissue
the tissues that make up the spinal cord is the nervous tissue
The body tissues that have the least amount of nervous tissue is cartilage.
I think the answer you're looking for here is nervous tissue which carries action potentials, or nervous impulses, between the tissues and are central nervous system. However, from another point of view you could also consider the cardiovascular system as carrying hormonal messages throughout the body.
apithelial tissues