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.
Organ. An organ is a structure composed of two to four types of tissues working to perform functions that are beyond the scope of an individual tissue type. A set of related organs working cooperatively toward the performance of even more complex functions constitutes an organ system. Organs come in many different forms.