stress

Question 1

low stress on epithelial tissue

Answer 1

decrease collagen, decrease collagen diameter, decrease strength and tissue

Question 2

high stress on epithelial tissue

Answer 2

bed sores, lacerations

Question 3

low stress on muscle

Answer 3

decrease contractile proteins, decrease fiber diameter, decrease peak tension and power

Question 4

high stress on muscle

Answer 4

increased contractile proteins, increased fiber diameter, increased peak tension and power

Question 5

low stress on neural tissue

Answer 5

change in rate of transmission

Question 6

high stress on neural tissue

Answer 6

shear/compression leads to degeneration, demyelinization, neurotinesis

Question 7

5 tissue responses to physical stress

Answer 7

1. decreased stress tolerance
2. maintenance
3. increased stress tolerance
4. injury
5. death

Question 8

3 factors of physical stress

Answer 8

time, magnitude, duration

Question 9

function of inflammation post injury

Answer 9

renders the injured tissue less tolerant of stress than it was prior to injury

Question 10

low stress on bone

Answer 10

decrease mineral density (osteoporosis)

decreased strength

Question 11

high stress on bone

Answer 11

increased bone mineral density, increased strength

Question 12

excessive stress on bone

Answer 12

fracture

Question 13

low stress on tendon

Answer 13

decreased cross sectional area, decreased stiffness and strength

Question 14

high stress on tendon

Answer 14

increased cross sectional area, stiffness, strength

Question 15

excessive stress on tendon

Answer 15

tendon strain

Question 16

low stress level on ligament

Answer 16

decreased cross sectional area, decreased stiffness, strength

Question 17

high stress level on ligament

Answer 17

increased cross sectional area, stiffness, strength

Question 18

excessive stress on ligament

Answer 18

sprain, rupture

Question 19

low stress level on cartilage

Answer 19

decreased PG content, decreased cartilage thickness and stiffness

Question 20

high stress on cartilage

Answer 20

increased PG, increased cartilage thickness, stiffness

Question 21

excessive stress on cartilage

Answer 21

degeneration or tear

Question 22

factors that affect level of physical stress

Answer 22

1. movement and alignment
2. extrinsic factors
3. psycho-social factors
4. physiological factors

Question 23

movement and alignment

Answer 23

muscle performance
motor control
posture and alignment
physical activity
occupational, leisure and self-care activities

Question 24

extrinsic factors

Answer 24

orthotic devices, taping, assistive devices
footwear
ergonomic environment
modalities
gravity

Question 25

psycho-social factors

Answer 25

influence the threshold values for tissue adaptation and injury
affect of injury on their life, levels on emotional stress

Question 26

physiological factors

Answer 26

medications, system pathology, age, obesity