What is the classification of living things into groups

Specialized cells which perform a particular function form : organisms organs tissues

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.