Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Kinesiology > kin of muscular system > Flashcards

kin of muscular system Flashcards

1
Q

is the body a simple machine?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

muscles

A

force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

bone

A

lever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

joints

A

axes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

normal resting length

A

when muscle is not short or lengthened

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

irritability

A

ability to respond to stimulus resulting in contraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

contractibility

A

ability to generate force following stimulus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

extensibility

A

ability to stretch with force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

elasticity

A

muscle returns to normal resting length when force is removed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

z-lines

A

separate sarcomeres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

actin

A

pulls sarcomere making is shorter resulting in a contraction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

myosin

A

bind to actin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

mm fibers

A

individual muscle fibers of a small bundle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

fascicles

A

bundle of muscle fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

muscle anatomy small to big x 5

A

sarcomere
myofibrils
mm fibrils
fascicles
muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Sliding filament theory

A

myosin head binds to actin
myosin head exert force & pull actin closer for a contract
this repeats

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

type I muscle fiber

A

slow twitch
small in diameter
for endurance
response to neural stimulation is slow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

type II muscle fibers

A

fast twitch
large in diameter
for quick short bursts of activity
response to neural stimulation is fast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

motor units

A

a group of muscle fibers innervated by the same motor neuron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

T/F: not all motor units are activated during muscle contraction

A

true!

  • high force = some motor units
  • low force = few motor units
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

tendon

A

muscle to bone

22
Q

ligament

A

bone to bone

23
Q

musculotendinous joint

A

muscle to tendon

24
Q

tenoperiosteal joint

A

tendon to bone

25
Q

origin

A

proximal mm attachment

26
Q

insertion

A

distal mm attachment

27
Q

concentric contraction in open chain

A

insertion moves to the origin
- lifting glass to mouth

28
Q

concentric contraction in closed chain

A

origin moves to insertion
- pull-ups

29
Q

parallel muscle fiber

A

longer & larger ROM potential

30
Q

oblique muscle fiber

A

shorter & greater strength potential d/t numerous fibers

31
Q

parallel muscle fibers x4

A

strap
fusiform
rhomboidal
triangular

32
Q

strap

A

long thin fibers running entire length of mm

  • SCM, sartorius, & rectus abdominis
33
Q

fusiform

A

spindle-like fibers that mostly run length of the muscle

  • biceps, triceps
34
Q

rhomboidal

A

4-sided mm, flat w/ broad attachment @ edge

  • rhomboids, pronator quadratus
35
Q

triangular

A

flat with fan/triangular appearance

  • pec major
36
Q

oblique muscle fibers x3

A

unipennate
bipennate
multipennate

37
Q

unipennate

A

one side of a feather

  • tibialis posterior, semimembranosus
38
Q

bipennate

A

feather-like shape

  • rectus femoris, interossei of hands
39
Q

multipennate

A

3+ branches of oblique fibers separated by tendon

  • deltoids, subscapularis
40
Q

muscles are named after … x7

A

location
shape
# of heads
size of mm
action
attachment
direction of fibers

41
Q

agonist

A

prime mover causes the motion

42
Q

antagonist

A

mm that does the opposite motion of the agonist

  • prevents joint movement -> STABILITY
  • common when learning a new task
43
Q

stabilizer

A

mm that supports agonist to work more efficiently

  • core mm
  • associated with joint
44
Q

neutralizer

A

prevents unwanted motion if mm can produce 2+ more actions

  • associated with muscles
45
Q

synergist

A

muscles work in conjunction w/ another mm enhancing movement

  • flexor carpi ulnaris + extensor carpi ulnaris = ular deviation!!!!
46
Q

active insufficiency

A

muscle is too short to contract effectively

47
Q

passive insufficiency

A

muscle too long to stretch

48
Q

the distance that a muscle is capable of shortening after it has been elongated to its maximum

A

functional excursion

49
Q

hypotonia

A

reduced muscle tone, floppiness & deceased strength

50
Q

hypertonia

A

increased muscle tone
stiffness & reduced movement (spastic or rigid)

Kinesiology (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions