Myology Flashcards

0
Q

What are the muscles of mastication

A

Temporalis
Masseter
Medial (internal) Pterygoid
Lateral (external) Pterygoid

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1
Q

What are the muscles of the face and tongue

A
Orbicularis oculi 
zygomaticus
mentalis
orbicularis oris
buccinator
genioglossus
hyoglossus
styloglossus
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2
Q

Does the TMJ have a disc or not

A

yes it does

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3
Q

what is wry neck

A

torticolis

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4
Q

what is the prime mover of jaw closure

A

masseter

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5
Q

What is the function of the buccinator

A

expels air, aids in mastication

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6
Q

what are the muscles of the superficial neck

A

Platysma and SCM

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7
Q

what are the muscle of the suprahyoid compartment

A

Digastric (two bellies)
stylohyoid
mylohyoid
geniohyoid

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8
Q

what are the muscles in the infrahyoid compartment (TOSS)

A

Sternohyoid
sternothyroid
Omohyoid (2 bellies)
Thyrohyoid

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9
Q

what do the muscles of the infrahyoid compartment do

A

swallowing and speaking

“strap Muscles”

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10
Q

What are the vertebral muscles of the head and neck

A

Longus colli

Scalenus Anterior, Medius and Posterior

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11
Q

Longus colli attaches where

A

the anterior tubercle of atlas

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12
Q

what are the muscles of the sub-occipital triangle

A

Superior oblique
Inferior oblique
Rectus Capitis Posterior Major

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13
Q

what makes up the roof of the Sub occipital triangle

A

semispinalis capitis muscle

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14
Q

what is the floor of the Sub occipital triangle

A

Posterior atlanto-occipital membrane

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15
Q

what are the contents of the sub-occipital triangle

A

suboccipital nerve and vertebral artery*

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16
Q

what artery traverses through the suboccipital triangle

A

vertebral

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17
Q

which nerve traverses through the suboccipital triangle

A

suboccipital

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18
Q

name the superior, lateral border of the suboccipital triangle

A

superior oblique

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19
Q

name the medial border of the suboccipital triangle

A

Rectus capitis posterior major

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20
Q

name the inferior, lateral border of the suboccipital triangle

A

inferior oblique

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21
Q

What are the deep muscles of the back

A
Multifidus
rotatores 
Intertransversarii
interspinalis 
iliocostalis 
longissimus 
spinalis
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22
Q

what are the erector spinae muscle group

I Love Spinal (lateral to medial)

A

Iliocostalis
Longissimus
Spinalis

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23
Q

what is the action of the mutifidus

A

extension and contralateral rotation

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24
Q

what is the function of the rotatores

A

extension and rotation

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25
Q

what is the function of the intertransversarii muscles

A

lateral flexion

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26
Q

what is the function of the interspinalis muscles

A

extension

27
Q

what is the function of the Iliocostalis, longissimus and spinalis muscles

A

Extends and ipsilateral flexion

28
Q

what is the nerve supply to the deep muscles of the back

A

Spinal nerve dorsal rami

intertransversarii is also innervated by the anterior rami

29
Q

What are the muscles of the thorax

A

External Intercostals
internal intercostals
transverse thoracic
subcostalis

30
Q

what is the nerve for the muscles of the thorax

A

intercostals

31
Q

what is the action of the external intercostals

A

elevate ribs

32
Q

what is the action of the internal intercostals

A

depress ribs, interchondral part elevates ribs

33
Q

what is the action of the transverse thoracic muscle

A

depresses the ribs

34
Q

what is the action of the subcostalis muscles

A

elevates ribs

35
Q

what are the muscles of the anterior abdominal wall

A
External oblique 
internal oblique 
transverse abdominis 
rectus abdominis 
cremasteric
36
Q

what is the action of the external oblique

A

compress abdomem, flex trunk, and forced expiration

37
Q

what is the action of the internal oblique

A

compresses abdomen, flexes trunk and forced expiration

38
Q

what is the action of the transverse abdominis

A

compresses abdomen and depresses ribs

39
Q

what is the action of the rectus abdominis

A

depresses ribs and flexes trunk

40
Q

what is the action of the cremaster muscle

A

retract testis

41
Q

what are the muscles of the posterior abdominal wall

A

Quadratus lumborum

Psoas major and minor

42
Q

the QL’s action is to do what

A

depresses the twelfth rib and flex trunk laterally

43
Q

what is the action of the Psoas major

A

flexes thigh and trunk

44
Q

what goes through the psoas major

A

femoral nerve

45
Q

what id the action of the psoas minor

A

aids in flexing the trunk

46
Q

what are the muscles of the lateral pelvis wall

A

piriformis and obturator internus

47
Q

the piriformis is innervated by what nerves

A

S1-2

48
Q

the piriformis has an action of what

A

external rotation of hip and abduction of thigh

49
Q

what is the action of the obturator internus

A

external rotation of thigh

50
Q

what is the obturator internus innervated by

A

nerve to obturator internus

51
Q

What are the muscles of the pelvic floor ***

A
A) Levator ani muscles:
1-Pubococcygeus
2-puborectalis
3-iliococcygeus 
B) coccygeus
52
Q

what are the actions of the pubococcygeus

A

supports pelvic viscera

53
Q

what is the action of the puborectalis

A

resist increased abdominal pressure

54
Q

what is the action of the iliococcygeus

A

completes pelvic floor

55
Q

what is the action of the coccygeus

A

supports and pulls coccyx anteriorly

56
Q

what are the muscles of the urogenital diaphragm

A

Sphincter urethrae and deep transversus perinei

57
Q

what is the action of the sphincter urethrae

A

Males it constricts the urethra

females it blends with vaginal wall

58
Q

what action does the deep transversus perinei have

A

supportive role

59
Q

what are the muscles of the superficial perineum

A

Ichiocavernosus
bulbospongiosus
superficial transversus perinei

60
Q

what is the action of the ischiocavernosus

A

males its aids in erection

females it constricts the vaginal orifice

61
Q

what is the action of the bulbospongiosus

A

Males only and it aids in erection

62
Q

what is the action of the superficial transversus perinei

A

support

63
Q

which nerve passes through the greater and lesser sciatic foramen

A

Pudendal

64
Q

which muscle can affect the sciatic nerve and cause pain in the lower extremity of our patients

A

piriformis