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T1- spinalbiomech > SpinalBioMech Quiz 3 Lec 8 > Flashcards

SpinalBioMech Quiz 3 Lec 8 Flashcards

1
Q

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

A

Motor unit

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2
Q

_____ unit: innervates muscle fibers

A

motor unit

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3
Q

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

A

contraction

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4
Q

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

A

magnitude

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5
Q

the magnitude of muscle contraction is dependant on ______

A

the number of motor units firing

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6
Q

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

A

asynchonously

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7
Q

_____ : muscle shortens

A

concentric

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8
Q

a concentric contraction is a class ___ lever

A

3

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9
Q

concentric muscle is the ____ force

A

effort

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10
Q

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

A 
concentrict muscle shortens
3rd class lever 
muscle is the effort force
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11
Q

__ contraction the muscle lengthens

A

eccentric

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12
Q

eccentric contractions are a _____ class lever

A

2nd

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13
Q

Eccentric muscle is the ____ force

A

resistance

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14
Q

_____ contraction is when the length of the muscle doesnt change

A

isometric

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15
Q

during isometric contractions there is a equilibrium btw ____ & ___

A

effort and resistance force

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16
Q

Fascia is sheaths of _____

A

CT

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17
Q

____ fascia is directly under the skin

A

superficial

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18
Q

superficial fascia allows the skin to ___

A

move

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19
Q

deep fascia attaches _____

A

muscle to bone & other CT

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20
Q

deep fascia forms (3) things

A
  1. tracts
  2. bands
  3. retinacula
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21
Q

Fascial planes are ____ throughout the body

A

interconnected

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22
Q

_____ muscle tension is noncontractile

A

passive

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23
Q

Passive muscle tension - noncontractile; created by _____

A

lengthening the muscle beyond the slack length

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24
Q

___ muscle tension is contractile

A

active

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25
Q

active muscle tension is created by ____ formation

A

cross bridge

26
Q

total muscle tension is a combo of __ & __ tension

A

active and passive

27
Q

total tension is developed during ____ contraction

A

active

combo of passive and active

28
Q

Agonist is the ____ mover

A

primary

29
Q

_____ is the primary mover, produces the desired action

A

agonist

30
Q

during muscle movement _____ produces the desired action

A

agonist

31
Q

_______: is the muscle opp the agonist

A

antagonist

32
Q

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

A

antagonist

33
Q

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

A

resist, motion

34
Q

__: muscle that assist the agonist

A

synergist

35
Q

synergist assist the ____ muscle

A

agonist

36
Q

______ muscles : hyperactive & tight usually due to overuse

A

shortened

37
Q

shortened muscles are _____ & tight, usually due to overuse

A

hyperactive

38
Q

shortened muscles are hyperactive and tight usually due to ____

A

overuse

39
Q

____ muscles are inhibited and lengthened

A

long

40
Q

Long muscles are ____& ____

A

inhibited and lengthened

antagonist of a tight muscle

41
Q

long muscles are usually ____ of a tight muscle

A

anatagonist

42
Q

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

A

movement patterns

dysfunction

43
Q

____ technique assesses muscle length and strength

A

Janda

44
Q

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

A

affects every part of the joint and surrounding structures

45
Q

_____ is the most damaging to muscle tissue

A

immobilization

46
Q

immobilization can lead to _____ & surrounding structures to _____

A

joint capsule to shorten (contract)

47
Q

joint capsulse and surrounding structures shorten during ____ treatment

A

immobilization

48
Q

_____ lose collagen and cross linking ability & strength during immobiliazation

A

ligaments and tendons

49
Q

ligaments and tendons lose ____ during immobilization

A

loss collagen & cross linking ability

50
Q

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

A

50%

51
Q

full recovery after immobilization may take up to ____ months

A

18

52
Q

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

A

articular surface

53
Q

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

A
  1. fibrofatty tis
  2. adhesions
  3. cartilage atrophy
  4. osteoporosis
  5. increase water intake
  6. decrease proteoglycans
54
Q

immobilizing a muscle into the ___ position is the worst

A

shortened

55
Q

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

A

development of CT, loss of mass & atrophy

56
Q

immobilization in the lengthened position allows for _____ recovery

A

easier

57
Q

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

A

lack of adequate recovery time btw loads

58
Q

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

A

repetitive stress

59
Q

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

A

repetative stress injuries

60
Q

repetituve strain and deformity can lead to ____ of the structure

A

failure

61
Q

repetitive stress injuries are more common in male or female

A

females

T1- spinalbiomech (6 decks)

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