Sport Injuries

Physiological Responses

Muscle Strain

Aims

Understand the common physiological

responses to injuries

Objectives

All students will be able to list some (all) of

the physiological responses to a muscle

strain

Some students will be able to explain the

physiological responses to a muscle strain

IntroductionPhysiological responses to injury

“An adjustment within cells, or

tissues, in response to an

environmental stimulus resulting

in an improved ability to cope

with the changing environment”

Muscle fibres

Grade 1 strain

Grade 3 strain

Group Task

• In small groups reflect and identify the physiological responses as a result of a grade 3 muscle strain

• Think how does the body adapt and cope with the trauma

Construction of blood

Primary phase of healingBlood Clotting

Vessel constricts

Platelets activate

Internalbleeding

Bleeding stops

Fibrin clotto vessel surface

Activated platelets among a red blood cell

Healing process

• Absorption of swelling

• Removal of dead tissue

• Growth of new blood capillaries

• Development of fibrous tissue (scar tissue)

Individual task

• Complete the table in your own words describing the physiological responses to a grade 3 muscle strain

Summary

Primary responses:BleedingPlatelets activatedFibrin released

Healing process:Reduce swellingGrowth of

capillariesScar tissue