The spinal cord is organized into functional units called:

________ tissue is a flat arrangement of cells that forms the skin, lines and covers the organs, lines the walls of cavities, and forms tubes, ducts, and some glands

a. Epithelial b. Connective c. Muscle d. Nerve

Snoring, stridor, and gurgling are all sounds of lower airway disease

Indicate whether the statement is true or false