Muscle stiffness is a condition in which muscles feel tight and contracted rather than the usual supple state of muscles at rest.Itâs also called stiff muscles, rigidity, and in severe cases, spasticity. Muscle stiffness is a feeling of tension and contraction in the muscles.uscle stiffness is a condition in which muscles feel tight and contracted rather than the usual supple state of muscles at rest.
Making the world better, one answer at a time. Using the definition of organ as a group of cells that perform a specific function, the average human body has 78 organs. There are approximately 78 organs in the body. Using the definition of organ as a group of cells that perform a specific function, the average human body has 78 organs.
In biology, an organ is a structure composed of a group of different tissues that work together to perform a specific function. Most multicellular organisms have one or more organs. The stomach, liver, lungs, and heart are examples of organs found in animals. Stems and leaves are two types of organs found in plants.