Permanent damage to which of the following types of tissue in the spinal cord will cause paralysis?

a. nervous tissue

b. muscle tissue

c. bone tissue

d. connective tissue

Answer: A. Nervous tissue

Explanation: The spinal cord, together with the brain, forms the central nervous system and the most important part of the body for the transmission of nerve impulses, that is, information for the functioning of the body. The spinal cord as well as the entire nervous system is made up of nerve cells, whose receptors, neurons, transmit vital information to the brain where they are processed, after which feedback is sent in the form of some kind of command from the brain what certain parts of the body should do, i. e. how to function. In this way, the complete functioning of the organism is regulated. How much to increase the work of a particular organ, glands, how much the heart needs to pump blood, how to move hands, legs, all this is regulated by information from the brain through nerve cells, neurons.

If nerve cell damage occurs, which can be a result of physical injury, or a disease that causes nerve cell disruption, then there is no way to send information to the brain and feedback from the brain, which causes paralysis of certain parts of the body, sometimes the whole body, dependent on the injury and the degree of damage to nerve cells, neurons.