SpinalBioMech Quiz 3 Lec 8

Question 1

______: neuron in the anterior (venteral) horn of the SC

Answer 1

Motor unit

Question 2

_____ unit: innervates muscle fibers

Answer 2

motor unit

Question 3

_______ of a muscle is the result of many motor units firing asynchronously & repeatedly

Answer 3

contraction

Question 4

the _____ of contration is dependant on the number of motor units firing

Answer 4

magnitude

Question 5

the magnitude of muscle contraction is dependant on ______

Answer 5

the number of motor units firing

Question 6

Contraction of a muscle is the result of many motor units firing ____

Answer 6

asynchonously

Question 7

_____ : muscle shortens

Answer 7

concentric

Question 8

a concentric contraction is a class ___ lever

Answer 8

3

Question 9

concentric muscle is the ____ force

Answer 9

effort

Question 10

______ muscle shortens, ___ class lever, muscle is the ___ force

Answer 10

concentrict muscle shortens
3rd class lever 
muscle is the effort force

Question 11

__ contraction the muscle lengthens

Answer 11

eccentric

Question 12

eccentric contractions are a _____ class lever

Answer 12

2nd

Question 13

Eccentric muscle is the ____ force

Answer 13

resistance

Question 14

_____ contraction is when the length of the muscle doesnt change

Answer 14

isometric

Question 15

during isometric contractions there is a equilibrium btw ____ & ___

Answer 15

effort and resistance force

Question 16

Fascia is sheaths of _____

Answer 16

CT

Question 17

____ fascia is directly under the skin

Answer 17

superficial

Question 18

superficial fascia allows the skin to ___

Answer 18

move

Question 19

deep fascia attaches _____

Answer 19

muscle to bone & other CT

Question 20

deep fascia forms (3) things

Answer 20

1. tracts
2. bands
3. retinacula

Question 21

Fascial planes are ____ throughout the body

Answer 21

interconnected

Question 22

_____ muscle tension is noncontractile

Answer 22

passive

Question 23

Passive muscle tension - noncontractile; created by _____

Answer 23

lengthening the muscle beyond the slack length

Question 24

___ muscle tension is contractile

Answer 24

active

Question 25

active muscle tension is created by ____ formation

Answer 25

cross bridge

Question 26

total muscle tension is a combo of __ & __ tension

Answer 26

active and passive

Question 27

total tension is developed during ____ contraction

Answer 27

active | combo of passive and active

Question 28

Agonist is the ____ mover

Answer 28

primary

Question 29

_____ is the primary mover, produces the desired action

Answer 29

agonist

Question 30

during muscle movement _____ produces the desired action

Answer 30

agonist

Question 31

_______: is the muscle opp the agonist

Answer 31

antagonist

Question 32

____ do not resist the desired motion but have the potential to do so

Answer 32

antagonist

Question 33

antagonist do not ___ the desired ____ but have the ability to do so

Answer 33

resist, motion

Question 34

__: muscle that assist the agonist

Answer 34

synergist

Question 35

synergist assist the ____ muscle

Answer 35

agonist

Question 36

______ muscles : hyperactive & tight usually due to overuse

Answer 36

shortened

Question 37

shortened muscles are _____ & tight, usually due to overuse

Answer 37

hyperactive

Question 38

shortened muscles are hyperactive and tight usually due to ____

Answer 38

overuse

Question 39

____ muscles are inhibited and lengthened

Answer 39

long

Question 40

Long muscles are ____& ____

Answer 40

inhibited and lengthened | antagonist of a tight muscle

Question 41

long muscles are usually ____ of a tight muscle

Answer 41

anatagonist

Question 42

an imbalance of shortened and long muscle may result in faulty _____ patterns and lead to joint ____

Answer 42

movement patterns | dysfunction

Question 43

____ technique assesses muscle length and strength

Answer 43

Janda

Question 44

any event that disturbs the normal function of a specific joint structure will set up a chain of event that eventually _____

Answer 44

affects every part of the joint and surrounding structures

Question 45

_____ is the most damaging to muscle tissue

Answer 45

immobilization

Question 46

immobilization can lead to _____ & surrounding structures to _____

Answer 46

joint capsule to shorten (contract)

Question 47

joint capsulse and surrounding structures shorten during ____ treatment

Answer 47

immobilization

Question 48

_____ lose collagen and cross linking ability & strength during immobiliazation

Answer 48

ligaments and tendons

Question 49

ligaments and tendons lose ____ during immobilization

Answer 49

loss collagen & cross linking ability

Question 50

During immobilization may lose up to __% of strength after 8 weeks

Answer 50

50%

Question 51

full recovery after immobilization may take up to ____ months

Answer 51

18

Question 52

_____ develops fibrofatty tissue adhesions , cartilage atrophy, osteoporosis, increased water intake and decreased proteoglycans during immobilization

Answer 52

articular surface

Question 53

articular surface may develop _(6)_____ conditions during immobilization

Answer 53

1. fibrofatty tis 2. adhesions 3. cartilage atrophy 4. osteoporosis 5. increase water intake 6. decrease proteoglycans

Question 54

immobilizing a muscle into the ___ position is the worst

Answer 54

shortened

Question 55

immobilizing in the short position can increase the development of _____ , loss of ___ & ____

Answer 55

development of CT, loss of mass & atrophy

Question 56

immobilization in the lengthened position allows for _____ recovery

Answer 56

easier

Question 57

Repetitive stress injury: the joint structures are thought to fail due to ______

Answer 57

lack of adequate recovery time btw loads

Question 58

lack of adequate recovery time btw loads can cause a ____ injury

Answer 58

repetitive stress

Question 59

even is loads are within the normal loading range for the tissue _____ injuries can occur

Answer 59

repetative stress injuries

Question 60

repetituve strain and deformity can lead to ____ of the structure

Answer 60

failure

Question 61

repetitive stress injuries are more common in male or female

Answer 61

females