The degree of frictional force developed as the material is pulled through the tissue is known as its what?

• A. Chatter
• B. Friction
• C. Drag
• D. Resistance

Answer: (C)

When a material is pulled through tissue, the resistance it meets is described as drag. Drag is the overall retarding force acting on a moving object in a medium, capturing the combined effects of surface friction at the interface and the tissue’s deformation and viscous response as the object displaces it. So the degree of frictional resistance experienced during movement through tissue is best described by drag, because it reflects the total opposition to motion, not just contact surface friction alone. In practice, drag can be influenced by how sharp or smooth the instrument or material is, how well it’s lubricated, the type and condition of the tissue, and the speed of movement. Higher drag means more effort is needed and greater potential for tissue trauma. Chatter refers to vibration, friction is only the surface contact resistance, and resistance is a vague term; drag is the precise, context-appropriate descriptor here.