So I assume it's talking about tissues.
Muscle tissues - These are tissues which control movement. they relax and contract to move your body.
Epithelial tissues - These are tissues like your skin, or anything where it has a membrane on the outside.
Connective tissue - Tissue that connects something to another thing. For example, connective tissue attaches your muscles to you bones.
Nervous tissue - Tissues like nerves that carry signals to the brain. Without nerves you wouldn't be able to feel, move or think.