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Boards pt1 > Myology > Flashcards

Myology Flashcards

1
Q

(shoulder girdle)
Rotator cuff compartment muscles
“SITS”

A
  1. supraspinus
  2. infraspinus
  3. teres minor
  4. subscapularis
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2
Q

Nerves:

  1. supraspinus
  2. infraspinus
  3. teres minor
  4. subscapularis
A
  1. suprascapular
  2. suprascapular
  3. AXILLARY
  4. subscapular
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3
Q

Action:

  1. supraspinus
  2. infraspinus
  3. teres minor
  4. subscapularis
A
  1. abduction
  2. externals (lateral) rotation
  3. external (lateral) rotation
  4. internal (medial) rotation
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4
Q

Origin/insertion

  1. supraspinus
  2. infraspinus
  3. teres minor
  4. subscapularis
A
  1. fossa of scapula/greater tubercle of humerus
  2. fossa of scapular/greater tubercle of humerus
  3. lat border dorsal scapula/greater tubercle of humerus
  4. subscapular fossa of scapula/lesser tubercle of humerus
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5
Q

(shoulder girdle)
Other compartment
Majority blood supply: descending scapular

A
  1. latissimus dorsi
  2. trapezius
  3. rhomboid
  4. SERRATUS ANTERIOR
  5. deltoid
  6. teres major
  7. pectoralis minor
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6
Q

Nerves:

  1. latissimus dorsi
  2. trapezius
  3. rhomboid
  4. SERRATUS ANTERIOR
  5. deltoid
  6. teres major
  7. pectoralis minor
A
  1. thoracodorsal
  2. spinal accessory
  3. dorsal scapular
  4. long thoracic
  5. axillary
  6. subscapular
  7. medial pectoral nerve
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7
Q

Action:

  1. latissimus dorsi
  2. trapezius
  3. rhomboid
  4. SERRATUS ANTERIOR
  5. deltoid
  6. teres major
  7. pectoralis minor
A
  1. extension + int. rot. arm
  2. aDduct scapula
  3. scapular retraction
  4. adheres scap to chest wall
  5. aBduction of arm
  6. ext. med. rot, aDduct arm
  7. Draws scapular forward
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8
Q

Origin/insertion:

  1. rhomboid
  2. deltoid
A
  1. SP of C7+T1 (minor) & SP of T2-T5 (major)/scapula

5. Trapezius, clavicle, acromion, spine of scapila/deltoid tuberosity of humerus

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9
Q

(arm)

Anterior compartment muscles

A
  1. biceps brachii
  2. brachialis
  3. brachioradialis
  4. coracobrachialis
  5. pronator teres
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10
Q

Nerve:

  1. biceps brachii
  2. brachialis
  3. brachioradialis
  4. coracobrachialis
  5. pronator teres
A

1,2,4: musculocutaneous

  1. radial
  2. MEDIAN
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11
Q

Blood supply:

  1. biceps brachii
  2. brachialis
  3. brachioradialis
  4. coracobrachialis
  5. pronator teres
A

1-4: brachial

5. ulnar

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12
Q

Action:

  1. biceps brachii
  2. brachialis
  3. brachioradialis
  4. coracobrachialis
  5. pronator teres
A
  1. flex elbow + supinate forearm
    2+3. flex elbow
  2. flexes + aDduct arm
  3. Pronate forearm
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13
Q

Origin/insertion:

  1. biceps brachii
  2. brachialis
  3. brachioradialis
  4. coracobrachialis
  5. pronator teres
A
  1. SHORT head: corocoid process, LONG head: supraglenoid tubercle of scapula, in capsule/radial tuberosity
  2. humerus/tuberosity + corocoid process of ulna
  3. humeral + ulnar head/radius
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14
Q

(arm)

Posterior compartment muscles

A
  1. triceps

2. anconeus

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15
Q

Nerve:

  1. triceps
  2. anconeus
A

radial

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16
Q

Blood supply:

  1. triceps
  2. anconeus
A

brachial

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17
Q

Action:

  1. triceps
  2. anconeus
A

extension of arm

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18
Q

Origin/insertion:

  1. triceps
  2. anconeus
A

insertion: olecranon process of the ulna

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19
Q

(forearm)

Anterior compartment muscles

A
  1. biceps brachii
  2. flexor radialis
  3. flexor carpi ulnaris
  4. flexor dig. profoundus
  5. pronator teres
  6. flexor pollicus longus
  7. palmaris longus
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20
Q

Nerves:

  1. biceps brachii
  2. flexor radialis
  3. flexor carpi ulnaris
  4. flexor dig. profoundus
  5. pronator teres
  6. flexor pollicus longus
  7. palmaris longus
A
  1. musculocutaneous
    2, 5, 6, 7. MEDIAN
  2. ulnar
  3. 1/2 median + 1/2 ulnar
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21
Q

Action:

  1. biceps brachii
  2. flexor radialis
  3. flexor carpi ulnaris
  4. flexor dig. profoundus
  5. pronator teres
  6. flexor pollicus longus
  7. palmaris longus
A
  1. flexes elbow + supinate forearm
  2. flex + aBduct wrist
  3. flex + aDduct wrist
  4. flex DIP, PIP, MCP
  5. pronate forearm + flex elbow
  6. flex distal thumb
  7. wrist flexor
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22
Q

Origin/insertion:

  1. biceps brachii
  2. flexor radialis
  3. flexor carpi ulnaris
  4. flexor dig. profoundus
  5. pronator teres
  6. flexor pollicus longus
  7. palmaris longus
A
  1. insertion: radius tuberosity
    2, 3. Origin: medial epicondyle of humerus
  2. “2 heads”: humeral head attaches medial epicondyle, other head attaches to ulna
  3. insertion: palmar surface distal 2-5 phalanges
  4. Origin: medial epicondyle of humerus, coronoid of ulna
  5. medial epicondyle of humerus/palmar aponeurosis
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23
Q

(forearm)

Posterior compartment

A
  1. extensor carpi radialis longus
  2. brevis
  3. extensor carpi ulnaris
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24
Q

Nerve:

  1. extensor carpi radialis longus
  2. brevis
  3. extensor carpi ulnaris
A

1, 2. RADIAL

3. Post. interosseous nerve

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25
Q

Action:

  1. extensor carpi radialis longus
  2. brevis
  3. extensor carpi ulnaris
A

1, 2. extends + aBducts wrist

3. extends + aDducts wrist

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26
Q

Origin/insertion

  1. extensor carpi radialis longus
  2. brevis
  3. extensor carpi ulnaris
A

Origin:
1, 2. lateral epicondyle of humerus

Insertion:

  1. base 2nd metacarpal
  2. base 3rd metacarpal
  3. base 5th metacarpal
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27
Q

(pelvic girldle)
Muscles
pudendal nerve

A
    1. levator ani - flor pelvic cavity
      1. coccygeus
      2. transverse perinei profundus
      3. sphincter ani externus
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28
Q

Nerve:

    1. levator ani - flor pelvic cavity
      1. coccygeus
      2. transverse perinei profundus
      3. sphincter ani externus
A

1, 2. pudendal plexus

3, 4. branches of pudendal

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29
Q

Blood supply:

    1. levator ani - flor pelvic cavity
      1. coccygeus
      2. transverse perinei profundus
      3. sphincter ani externus
A
  1. interal pudendal, inferior rectal
  2. internal pudendal, inferior rectal + inf. gluteal
  3. internal pudendal
  4. inferior rectal + transverse perineal
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30
Q

Action:

    1. levator ani - flor pelvic cavity
      1. coccygeus
      2. transverse perinei profundus
      3. sphincter ani externus
A
  1. constricts rectum + vaginal cavity
  2. pulls forward + supports coccyx
  3. Females: assists perineal body, helps sphincter action and supports vagina
    Males: assists perineal body, helps sphincter action supports prostate
  4. contracts orifice
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31
Q

Origin/insertion:

    1. levator ani - flor pelvic cavity
      1. coccygeus
      2. transverse perinei profundus
      3. sphincter ani externus
A
  1. pubis, ischial spine/coccyx
  2. ischial spine/coccyx
  3. ischial rami/medial tendinous raphe(male) + sides of vagina(female)
  4. anococcygeal raphe/surround anal canal
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32
Q

(thigh)

Anterior compartment muscles

A
  1. rextus femoris
  2. vastus lateralis
  3. vastus MEDIALIS
  4. vastus intermedius
  5. sartorius (longest)
  6. iliopsoas (illiacus + psoas)
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33
Q

Nerve/blood:

  1. rectus femoris
  2. vastus lateralis
  3. vastus MEDIALIS
  4. vastus intermedius
  5. sartorius (longest)
  6. iliopsoas (illiacus + psoas)
A

femoral

blood supply: femoral

*rectus femoris + sartorius cross two joints (Tailor’s muscle)

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34
Q

Action:

  1. rextus femoris
  2. vastus lateralis
  3. vastus MEDIALIS
  4. vastus intermedius
  5. sartorius (longest)
  6. iliopsoas (illiacus + psoas)
A
  1. extends leg, flexes thigh
    2-4. extend leg
  2. hip + knee flexion, external rotate thigh
  3. hip flexion
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35
Q

Origin/insertion:

  1. rextus femoris
  2. vastus lateralis
  3. vastus MEDIALIS
  4. vastus intermedius
  5. sartorius (longest)
  6. iliopsoas (illiacus + psoas)
A
  1. AIIS/patella
  2. greater trochanter/patella
  3. linea aspera/patella
  4. femur/patella
  5. ASIS/tibia
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36
Q

(thigh)

Medial compartment muscles

A
  1. adductors (magnus, longus, brevis)
  2. gracilis
  3. pectineus (overlies brevis + longus)
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37
Q

Nerve/blood:

  1. adductors
  2. gracilis
  3. pectineus
A

1, 2. obturator
3. femoral + some obturator

Blood supply: obturator

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38
Q

Action:

  1. adductors
  2. gracilis
  3. pectineus
A
  1. aDduct
  2. aDducts thigh, flex leg
  3. aDduct, flex, lat. rot thigh
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39
Q

Origin/insertion:

  1. adductors
  2. gracilis
  3. pectineus
A
  1. ramus pubis/linea aspera
  2. pubic symphysis/tibia
  3. pubis/linea aspera
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40
Q

(thigh)

Posterior compartment muscles

A
  1. biceps femoris
  2. semitendinosus
  3. semimembranosus
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41
Q

Nerve/blood:

  1. biceps femoris
  2. semitendinosus
  3. semimembranosus
A

Tibial

Blood supply: deep femoral

popliteal pulse

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42
Q

Action:

  1. biceps femoris
  2. semitendinosus
  3. semimembranosus
A
  1. flex + lat. rotates knee, extends the thigh

2, 3. flex + medial rotate knee; extends thigh

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43
Q

Origin/insertion:

  1. biceps femoris
  2. semitendinosus
  3. semimembranosus
A
  1. long: ischial tuberosity/fibula
    short: linea aspera/fibula
    2, 3. ischial tuberosity/tibia
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44
Q

(thigh)

Lateral compartment muscles

A
  1. TFL
  2. Gluteus medius, minimus
  3. Gluteus maximus
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45
Q

Nerve/Blood supply:

  1. TFL
  2. Gluteus medius, minimus
  3. Gluteus maximus
A

1, 2. superior gluteal
3. INFERIOR gluteal

Blood supply: inferior gluteal

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46
Q

Action:

  1. TFL
  2. Gluteus medius, minimus
  3. Gluteus maximus
A
  1. aBducts, flex + med rotate hip, extends knee
  2. aBducts + medial rotate hip
  3. ext, _ lat. rotate hip
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47
Q

Origin/insertion:

  1. TFL
  2. Gluteus medius, minimus
  3. Gluteus maximus
A
  1. ilium/iliotibial tract
  2. ilium/greater trochanter
  3. sacrum. coccyx, post. gluteal line, sacrospinalis tendon, sacrotuberous ligament/gluteal tuberosity of femur
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48
Q

(leg)

Anterior compartment muscles

A
  1. tibialis anterior
  2. extensor digitorum longus
  3. extensor hallucis longus
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49
Q

Nerve/blood supply:

  1. tibialis anterior
  2. extensor digitorum longus
  3. extensor hallucis longus
A

deep PERONEAL (anterior tibial)

blood supply: anterior tibial

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50
Q

Action:

  1. tibialis anterior
  2. extensor digitorum longus
  3. extensor hallucis longus
A

1, 2, 3. dorsiflexion, internally rotates

  1. dorsiflex/everts foot
  2. big toe: extension
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51
Q

Origin/insertion:

  1. tibialis anterior
  2. extensor digitorum longus
  3. extensor hallucis longus
A
  1. tibia/medial cuneiform
  2. tibia/distal lateral 4 toes
  3. fibula/distal great toe
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52
Q

(leg)

Posterior compartment muscles

A
  1. gastrocnemius
  2. soleus
  3. popliteus
  4. plantaris
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53
Q

Nerve/blood:

  1. gastrocnemius
  2. soleus
  3. popliteus
  4. plantaris
A

Tibial

Blood supply: posterior tibial

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54
Q

Action:

  1. gastrocnemius
  2. soleus
  3. popliteus
  4. plantaris
A
  1. plantar flexes foot, flexes knee
  2. plantar flex foot
  3. flex and rotate leg medially to unlock knee from full extension
  4. plantar flex foot
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55
Q

Origin/insertion:

  1. gastrocnemius
  2. soleus
  3. popliteus
  4. plantaris
A
  1. medial condyle + lateral condyle/calcaneus
  2. fibula-tibia/calcaneus
  3. lateral condyle femur/tibia
  4. lateral femur/calcaneus
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56
Q

(leg)

Lateral compartment muscles

A
  1. peroneus longus

2. peroneus brevis

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57
Q

Nerve/blood:

  1. peroneus longus
  2. peroneus brevis
A

superficial PERONEAL (fibular)

Blood supply: anterior tibial/peroneal

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58
Q

Action:

  1. peroneus longus
  2. peroneus brevis
A

plantar flex foot, evert foot

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59
Q

Origin/insertion:

  1. peroneus longus
  2. peroneus brevis
A

lat. tibia-fibula/medial cuneiform + base 1st metatarsal

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60
Q

face and tongue muscles

A
  1. orbicularis oculi
  2. zygomaticus major
  3. mentalis
  4. orbicularis oris
  5. buccinator
  6. genioglossus
  7. hyoglossus
  8. styloglossus
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61
Q

which face + tongue muscles are supplied by cn7

A 
orbicularis occuli
zygomaticus major
mentalis
orbicularis oris
buccinator
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62
Q

which face + tongue muscles are supplied by cn9

A

genioglossus
hyoglossus
styloglossus

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63
Q

orbicularis oculi action

A

eyelid sphincter

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64
Q

zygomaticus major action

A

mouth angle back and up

laughing

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65
Q

mentalis action

A

raises lower lip

doubt/disdain

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66
Q

orbicularis oris action

A

contracts/protrudes lips

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67
Q

buccinator action

A

compresses cheeks

expels air, aides in mastication

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68
Q

genioglossus action

A

protrudes tongue

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69
Q

hyoglossus action

A

depresses tongue

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70
Q

styloglossus action

A

retracts+elevates tongue

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71
Q

origin/insertion of orbicularis oculi

A

frontal and maxillary

eyelid

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72
Q

origin/insertion of zygomaticus major

A

zygomatic

mouth corner

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73
Q

origin/insertion of mentalis

A

mandible

chin

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74
Q

origin/insertion of orbicularis oris

A

maxilla and mandible

mouth

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75
Q

origin/insertion of buccinator

A

maxilla and mandible

orbicularis orbis

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76
Q

origin/insertion of genioglossus

A

mandible

hyoid and tongue

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77
Q

origin/insertion of hyoglossus

A

hyoid

tongue

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78
Q

origin/insertion of styloglossus

A

temporal bone

tongue

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79
Q

muscles of mastication

A
  1. temporalis
  2. masseter
  3. medial (internal) pterygoid
  4. lateral (external) pterygoid
80
Q

cn for muscles of mastication

A

cn5

81
Q

action of temporalis

A

elevate + retract jaw

82
Q

action of masseter

A

elevate jaw

prime mover of jaw closure

83
Q

action of medial pterygoid

A

elevate and protract jaw

84
Q

action of lateral pterygoid

A

pronates jaw and depresses

85
Q

origin/insertion of temporalis

A

temporal bone

coronoid of mandbile

86
Q

origin/insertion of masseter

A

zygomatic arch

mandible

87
Q

superficial neck muscles

A
  1. platysma

2. SCM

88
Q

torticollis affects which muscle

A

SCM

89
Q

cn of platysma

A

cn7

90
Q

cn of SCM

A

cn11

91
Q

platysma action

A

depresses lower lip and jaw

92
Q

SCM action

A
  1. ipsilateral flexion, contralateral rot

2. both flex

93
Q

origin/insertion of SCM

A

manubrium of sternum and clavicle

mastoid

94
Q

suprahyoid muscles and their cn’s

floor of oral cavity

A
  1. digastric (2 bellies)/cn5+cn7
  2. stylohyoid/cn7
  3. mylohyoid/cn5
  4. geniohyoid/c1 via cn12
95
Q

which muscles elevates hyoid

A

digastric
stylohyoid
mylohyoid

96
Q

digastric action

A

elevates hyoid, depresses jaw

97
Q

stylohyoid action

A

elevates and retracts hyoid

98
Q

mylohyoid action

A

elevates hyoid

99
Q

geniohyoid action

A

pulls hyoid anterior and up

100
Q

origin/insertion of digastric

A

mandible and mastoid

hyoid

101
Q

infrahyoid muscles

  • strap muscles*
  • swallowing and speaking*
A

1, sternohyoid
2, sternothyroid
3. omohyoid (2 bellies)
4. thyrohyoid

102
Q

which infrahyoid muscles are supplied by c1-c3

A

sternohyoid
sternothyroid
omohyoid

103
Q

infrahyoid muscle supplied by c1 via cn12

A

thyrohyoid

104
Q

sternohyoid action

A

depresses hyoid

105
Q

sternothyroid action

A

pulls thyroid cartilage down

106
Q

omohyoid action

A

depresses and retracts hyoid

107
Q

thyrohyoid action

A

depresses hyoid and elevates thyroid cartilage

108
Q

vertebral muscles

A
  1. longus colli
  2. scalenus anterior
  3. scalenus medius
  4. scalenus posterior
109
Q

what muscles are affected by TOS

A

scalenes

110
Q

which muscles supplied by primary rami c2-c8

A

longus colli

111
Q

which muscles supplied by primary rami c5-c8

A

scalenus anterior

scalenus posterior

112
Q

which muscles supplied by primary rami c3-c4

A

scalenus medius

113
Q

longus colli action

A

one lat flex

both flex and rot vertebrae

114
Q

scalenus anterior + scalenus medius action

A

elevates 1st rib, flexes and rotates vertebrae

115
Q

scalenus posterior action

A

elevates 2nd rib, flexes and rotates vertebrae

one laterally flexes

116
Q

origin/insertion of scalenes

A

transverse process of cervicals

first two ribs

117
Q

origin/insertion of multifidus

A

tp

spinosus

118
Q

action/nerve of multifidus

A

extension/contralateral rotation

spinal n. dorsal rami

119
Q

origin/insertion of rotatores

A

tp

lamina/sp

120
Q

action/nerve of rotatores

A

extension/rotation

spinal n. dorsal rami

121
Q

deep muscles of the back

A 
multifidus
rotatores
intertransversarii
interspinalis
iliocostalis
longissimus
spinalis
122
Q

origin/insertion of intertransversarii

A

tp/tp

123
Q

intertrasnversarii action/nerve

A

lateral flexion

spinal n. dorsal and ventral rami

124
Q

origin/insertion of of interspinalis

A

sp/sp

125
Q

action/nerve of interspinalis

A

extension

spinal n. dorsal rami

126
Q

origin/insertion of iliocostalis

A

ilium/ribs

127
Q

action/nerve of iliocostalis

A

extends and ipsilateral flexion

spinal n. dorsal rami

128
Q

origin/insertion of of longissimus

A

tp

tp/ribs

129
Q

action/nerve of longissimus

A

extends and ipsilateral flexion

spinal n. dorsal rami

130
Q

origin/insertion of spinalis

A

sp/sp

131
Q

action/nerve of spinalis

A

extends and ipsilateral flexion

spinal n. dorsal rami

132
Q

erector spinae muscle group

A

iliocostalis
longissimus
spinalis

133
Q

muscles of thorax

A

external intercostals
internal intercostals
transverse thoracics
subcostalis

134
Q

origin/insertion of external and internal intercostals

A

lower border - ribs

upper border of rib below

135
Q

external intercostal action

A

elevate ribs

136
Q

internal intercostal action

A

depress ribs, interchondral part elevates ribs

137
Q

origin/insertion of transverse thoracics

A

posterior sternum and xiphoid

costal cartilages 2-6

138
Q

action of transverse thoracics

A

depresses ribs

139
Q

origin/insertion of subcostalis

A

inner, lower ribs near angles

upper borders of ribs 2 or below

140
Q

action of subcostalis

A

elevates ribs

141
Q

nerve of muscles of thorax

A

intercostal

142
Q

muscles of anterior abdominal wall

A 
external oblique
internal oblique
transverse 
rectus abdominis
cremaster
143
Q

origin/insertion of external oblique

A

external lower 8 ribs (5-12)

144
Q

intercostal (t7-t11) + subcostal (t12) nerve supplies which muscles

A

external oblique, internal oblique, transverse, rectus abdominis

145
Q

action of external oblique and internal oblique

A

compresses abdomen, flexes trunk, forced expiration

146
Q

origin/insertion of internal oblique

A

inguinal ligament, iliac crest, thoracolumbar fascia

lower costal cartilages, linea alba, pubic crest, pect. line

147
Q

iliohypogastric and ilioinguinal (L1) supplie which muscles

A

internal oblique and transverse

148
Q

origin/insertion of transverse

A

inguinal ligament, iliac crest, thoracolumbar fascia, lower costal cartilages

linea alba, pubic crest, pect. line

149
Q

action of transverse

A

compresses abdomen, depresses ribs

150
Q

origin/insertion of rectus abdominis

A

pubic crest and pubic symphysis

xiphoid and 5-7 costal cartilages

151
Q

action of rectus abdominis

A

depress ribs, flexes trunk

152
Q

origin/insertion of cremaster

A

inguinal ligament, lower int. oblique

pubic tubercle and crest

153
Q

nerve of cremaster

A

genitofemoral

154
Q

action of cremaster

A

retract testis

155
Q

muscles of posterior abdominal wall

A

quadratus lumborum
psoas major
psoas minor

156
Q

origin/insertion of quadratus lumborum

A

tp’s L3-L5, iliac crest, iliolumbar ligament

lower border last rib, TP’s L1-L3

157
Q

action of quadratus lumborum

A

depresses rib 12, lat flex trunk

158
Q

quadratus lumborum nerve

A

subcostal, L1-L3

159
Q

origin/insertion of psoas major

A

tp’s, bodies of disks of t12-L5

lesser trochanter

160
Q

nerve of psoas major

A

L2-L3

161
Q

action of psoas major

A

flexes thigh and trunk

162
Q

femoral nerve pierces which muscles

A

psoas major

163
Q

origin/insertion of psoas minor

A

bodies and disks of t12-L1

pectineal line, iliopectineal eminence

164
Q

nerve of psoas minor

A

L1

165
Q

action of psoas minor

A

aids in flexing trunk

166
Q

muscles of lateral pelvis wall

A

piriformis

obturator internus

167
Q

origin/insertion of piriformis

A

anterior sacrum and sacrotuberous ligament

greater trochanter

168
Q

nerve/action of piriformis

A

S1-S2 (sciatic nerve)

external rot, hip, abduct of thigh

169
Q

origin/insertion of obturator internus

A

inner obturator membrane

greater trochanter

170
Q

nerve/action of obturator internus

A

nerve to obturator internus

external rotation thigh

171
Q

muscles of pelvic floor

A

Levator ani muscles

coccygeus

172
Q

levator ani muscles

A

pubococcygeus
puborectalis
iliococcygeus

173
Q

origin/insertion of pubococcygeus

A

pubis

coccyx

174
Q

action of pubococcygeus

A

supports pelvic viscera

175
Q

origin/insertion of puborectalis

A

pubis

u shaped rectal sling

176
Q

action of puborectalis

A

resists increased abdominal pressure

177
Q

origin/insertion of iliococcygeus

A

pelvic fascia tendinous arch and ischial spine

coccyx and anococcygeal ligament

178
Q

action of iliococcygeus

A

completes pelvic floor

179
Q

nerves of levator ani muscles

A

s3-s4 and pudendal nerve

180
Q

origin/insertion of coccygeus

A

ischial spine and sacrospinous ligament

lower sacrum and coccyx

181
Q

nerve/action of coccygeus

A

s4-s5

supports and pulls coccyx anteriorly

182
Q

muscles of urogenital diaphragm (deep perineum)

A

sphincter urethrae

deep transverse perinei

183
Q

origin/insertion of sphincter urethrae

A

medial inferior pubic ramus

median raphe and central perineal tendon

184
Q

action of sphincter urethrae

A

constricts urethra in males

blends with vaginal wall in females

185
Q

origin/insertion of deep transversus perinei

A

medial ischial ramus

central perineal tendon

186
Q

action of deep transversus perinei

A

supportive role

187
Q

pudendal nerves supply which muscles

A

levator ani muscles
sphincter urethrae
deep transversus perinei

188
Q

superficial perineum muscles

A

ischiocavernosus
bulbospongiosus
superficial transversus

189
Q

origin/insertion of ischiocavernosus

A

ischial tuberosity and ramus

crus (penis/clit)

190
Q

action of ischiocavernosus

A

aids in erection in males

constricts vaginal orifice in females

191
Q

origin/insertion of bulbospongiosus

A

central perineal tendon

corpus spongiosum

192
Q

action of bulbospongiosus

A

aids in erection in males

193
Q

origin/insertion of superficial transversus perinei

A

ischial tuberosity

central perineal tendon

194
Q

action of superficial transversus perinei

A

support

195
Q

which muscles does the perineal nerve supply

A

ischiocavernosus
bulbospongiosus
superficial transversus

Boards pt1 (28 decks)

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