OT 730 MIDTERM EXAM QUESTIONS WITH VERIFED ANSWERS

OT 730 MIDTERM EXAM QUESTIONS WITH VERIFED ANSWERS Q.Most tissue in the human body has? - ANSWER-viscoelastic properties Q.Define the concept of viscoelastic properties - ANSWER-responds to stress or load in different ways depending on the rate at which the load is applied, the magnitude of the load, and its duration Q.define viscosity - ANSWER-a measure of the resistance of a substance to motion under an applied force Q.The tissue response is dictated by the effect of any applied load on the tissue's physical and mechanical properties, such as _____________ - ANSWER-viscosity Q.The primary mechanism used by tissues, including ligaments, capsules, and muscle, to increase their length.30-32 - ANSWER-Viscoelasticity Q.Another response mechanism commonly seen in viscoelastic tissue when it is stretched to the? - ANSWER-end of its passive range into the pathophysiological zone Q.Name the five Protective tissue mechanisms - ANSWER-• "Uncrimping" • Elastic deformation • Creep • Stress or force relaxation • Stress reaction Q.Collagen-based fibers normally have a slightly wavy appearance in a _____________ __________ - ANSWER-Relaxed state - this "crimp" is slack in the tissue, and is the first line of defense in response to stress Q.Describe the process of uncrimping as a protective mechanism - ANSWER-allows ligaments, joint capsules and tendons to stretch by 2% without change in the structure - this occurs when a joint is taken through range of motion and as stress is applied Q.the property that enables tissue to return to its' original state after stress - the second line of defense - ANSWER-Elasticity Q.Elastic deformation process allows for? - ANSWER-about a 4% stretch in collagen, but this varies depending on the amount of elastic tissue present; The tissue's elasticity allows collagen to return to its normal length and dimensions when the stress is removed. It occurs throughout the active range of physiological movement (Used when testing joint ROM) Q.continuous or viscous deformation ("plastic flow") in response to a constant load that exceeds the elastic properties of the tissue - ANSWER-Creep Q.Describe the process of creep - ANSWER-This lengthening technique, when performed properly, is very painful and is noted clinically as going through the stages of being uncomfortable, to aching, to hurting, to painful, to almost unbearable, but the pain then disappears shortly after the stress is removed Q.This mechanism is used by clinicians to lengthen tight collagen tissue in the fibroplasia and consolidation phases of healing or in cases of hypomobile tissue - ANSWER-Creep Q.is another response mechanism commonly seen in viscoelastic tissue when it is stretched to the end of its passive range into the pathophysiological zone - ANSWER-Stress and force relaxation Q.Stress and force relaxation phenomenon is one of the reasons serial casting is frequently used to treat __________________ and why casts must be adjusted from time to time to readjust the load and continue lengthening of the tissues - ANSWER-hypomobility Q.The greatest stress relaxation occurs within ___ to ___ hours of loading - ANSWER-6-8 Q.Describes the series of physiological changes that occur with repetitive loading - ANSWER-Stress reaction (can occur in any connective tissue) Q.a method by which the body responds to repeated stresses in an attempt to make itself stronger so that it can adequately respond to the stress - ANSWER-stress reaction Q.Plateauing and increased symptoms during treatment are two signs of overtreatment that may indicate an excessive stress reaction. The only way to alleviate the excessive stress reaction is to relieve the cause. This is a primary consideration when treating? - ANSWER-overuse or repetitive stress injuries Q.The _________________ mechanism is complete 5 minutes after injury but may take up to 48 hours - ANSWER-clotting Q.typically lasts a few days, but can persist for various reasons - ANSWER-Inflammation Q.the length of these phases varies depending on client variables, such as _______ and ______ - ANSWER-age and health