Both, if the spinal cord is injured then you can experience nerve damage in almost any part of your body. Or your whole body. Tingling in parts of your body might occur.
Correct answer is sensation if individual sustain injury to only the ascending tracts of the spinal cord.
Explanation:
The white matter of spinal cord contains two type of tracts- Ascending tracts and Descending tracts.
Ascending tracts transmit sensory information from its sensory receptors to a higher level of the central nervous system. Descending tracts sends motor signals from the brain to lower motor neurons. So the individual experience deficit in sensation if he sustains injuries in ascending tracts only. However, there will be chances of other deficit experiences.
Research study show that sea urchins displayed similarity with humans like having an immune system and genetic material (DNA). Both belong to the deuterostomes. These animals are similar based on their early stage of development specifically during the embryos form.
