Gross 2 The Neck Area Flashcards

0
Q

insertion of the platysma?

A

lower border of the mandible and the angle of the mouth

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1
Q

origin of the platysma?

A

superficial Fascia over the pectoralis Major and deltoid muscles

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2
Q

nerve of the Platysma?

A

Cervical branch of facial nerve (CN 7)

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3
Q

function of platysma?

A

depresses the mandible and draws down the corner of the mouth

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4
Q

origin of the sternocleidomastoid?

A

sternal head from the front of the manubrium, clavicular head from the third of the clavicle

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5
Q

insertion of the sternocleidomastoid

A

lateral surface of mastoid process, lateral half of the superior nuchal line

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6
Q

nerve of the sternocleidomastoid

A

accessory nerve (CN XI)

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7
Q

function of the sternocleidomastoid?

A

chief flexor of the head

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8
Q

origin of the trapezius

A

external occipital protuberance
ligamentum nuchae
spinous processes of the seventh cervical and all thoracic vertebrae

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9
Q

insertion of the trapezius

A

the lateral third of the clavicle
spine of the scapula
acromion process

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10
Q

nerve of the trapezius

A

accessory nerve (CN11) and C3 and C4 from the cervical plexus

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11
Q

function of the trapezius

A

the upper portion rotates the scapula upward (elevates)
the middle portion retracts
the lower portion rotates the scapula downward (depresses)

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12
Q

origin of the Omohyoid

A

the inferior belly of omohyoid originates from the upper border of the scapula. it ends in an intermediate tendon located deep to the sternocleidomastoid muscle. the superior belly extends upwards from this tendon

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13
Q

insertion of the Omohyoid

A

the body of the hyoid bone

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14
Q

nerve of the Omohyoid

A

Ansa Cervicalis (C1,C2,C3)

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15
Q

function of the Omohyoid

A

depress the hyoid bone and larynx

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16
Q

origin of the Sternohyoid

A

posterior surface of the manubrium
and
the medial end of the clavicle

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17
Q

insertion of the sternohyoid

A

the body of the hyoid bone

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18
Q

nerve of the sternohyoid

A

Ansa Cervicalis (C1,C2,C3)

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19
Q

function of the sternohyoid

A

depresses the hyoid bone and larynx

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20
Q

origin of the sternothyroid

A

posterior surface of the manubrium
and
deep inferior to the origin of the sternohyoid

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21
Q

function of the sternothyroid

A

depresses the larynx

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22
Q

origin of the thyrohyoid

A

oblique line on the lamina of the thyroid cartilage

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23
Q

insertion of the thyrohyoid

A

the body of the hyoid bone

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24
Q

nerve of the thyrohyoid?

A

C1 through the hypoglossal nerve

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25
Q

function of the thyrohyoid

A

depresses the hyoid bone

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26
Q

what muscles are known as the infrahyoid muscles?

A

Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid

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27
Q

what are the muscles of the Root of the Neck?

A

Scalenus Anterior
Scalenus Medius
Scalenus Posterior

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28
Q

origin of the Scalenus Anterior

A

transverse processes of cervical vertebrae 4 through 6

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29
Q

insertion of the scalenus anterior

A

first rib

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30
Q

nerve of the scalenus anterior

A

Ventral primary rami of C5 through C8

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31
Q

function of the scalenus anterior

A

elevates the first rib during respiration

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32
Q

origin of the scalenus medius

A

transverse processes of cervical vertebrae 2 through 7

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33
Q

insertion of the scalenus medius?

A

first rib

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34
Q

nerve of the scalenus medius

A

ventral primary rami of C3 through C4

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35
Q

function of the scalenus medius

A

elevates the first rib during inspiration, flexes and laterally rotates cervical part of vertebral column

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36
Q

origin of the scalenus posterior

A

transverse processes of cervical vertebrae 4 through 6

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37
Q

insertion of scalenus posterior

A

second rib

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38
Q

nerve of the scalenus posterior

A

ventral primary rami of C4 through C8

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39
Q

function of scalenus posterior

A

elevates the second rib during inspiration, flexes and laterally rotates cervical part of the vertebral column

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40
Q

what are the muscles of the Submandibular Region

A
Digastric Muscle
Mylohyoid Muscle
Geniohyoid Muscle
Genioglossus Muscle
Hypoglossus Muscle
Styloglossus Muscle
Stylohyoid Muscle
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41
Q

origin of the digastric muscle

A

posterior belly from the mastoid process

anterior belly from the digastric fossa

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42
Q

insertion of the Digastric muscle

A

both bellies insert into the hyoid bone by an intermediate tendon which connects them together. The intermediate tendon is strapped to the hyoid bone by a fibrous loop

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43
Q

nerve of the Digastric muscle

A

Posterior belly: cervical branch of the Facial Nerve (CN 7)

Anterior Belly: by nerve to the mylohyoid (CN 5)

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44
Q

function of the Digastric Muscle

A

elevates the hyoid bone

-will depress mandible if hyoid is fixed

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45
Q

which belly of the digastric Muscle will be paralyzed by Bell’s Palsy?

A

the posterior belly innervated by the cervical branch of the facial nerve

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46
Q

origin of the mylohyoid Muscle?

A

Mylohyoid Line

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47
Q

insertion of the mylohyoid muscle?

A

body of the hyoid bone

Median Raphe

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48
Q

what the fuck is the median Raphe?

A

a fibrous band where muscle fibers from 2 sides come together and interweave (a seam)

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49
Q

nerve of the mylohyoid muscle?

A

nerve to the mylohyoid (CN 5)

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50
Q

function of the mylohyoid muscle

A

elevates hyoid bone and floor of the mouth

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51
Q

origin of the geniohyoid muscle?

A

inferior genial tubercle

inferior mental spine

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52
Q

insertion of the geniohyoid

A

body of the hyoid bone

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53
Q

nerve of the geniohyoid muscle

A

C1 fibers through hypoglossal

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54
Q

function of the geniohyoid muscle

A

elevates hyoid bone and tongue

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55
Q

what is the largest muscle of the tongue?

A

Genioglossus muscle

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56
Q

origin of the genioglossus muscle

A

superior genial tubercle

superior mental spine

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57
Q

insertion of the genioglossus muscle

A

Tip and entire undersurface of tongue

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58
Q

nerve of the genioglossus muscle

A

hypoglossal nerve (lingual branch)

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59
Q

function of the genioglossus muscle

A

draws tongue forward, protrudes tip of tongue

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60
Q

origin of the hyoglossus muscle?

A

body and greater horn of hyoid bone (upper surface)

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61
Q

insertion of Hyoglossus muscle

A

sides of the tongue

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62
Q

nerve of the Hyoglossus muscle

A

hypoglossal nerve

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63
Q

function of the hypoglossus muscle

A

draws tongue downward

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64
Q

origin of the styloglossus muscle

A

styloid process

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65
Q

insertion of styloglossus muscle

A

sides of the tongue

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66
Q

nerve of the styloglossus muscle

A

hypoglossal nerve

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67
Q

function of styloglossus muscle

A

draws tongue upward and backward

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68
Q

origin of stylohyoid muscle?

A

styloid process

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69
Q

what pierces the stylohyoid muscle?

A

the intermediate tendon of Digastric

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70
Q

insertion of the stylohyoid muscle

A

body of hyoid bone

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71
Q

nerve of stylohyoid muscle

A

Facial nerv

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72
Q

function of stylohyoid muscle

A

elevates hyoid bone and tongue

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73
Q

what are the muscles of the soft palate?

A

Musculus Uvulae
Levator Veli Palatini
Tensor Veli Palatini

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74
Q

origin of the musculus Uvulae

A

posterior nasal spine

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75
Q

insertion of the Musculus Uvulae

A

mucous membrane of uvula

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76
Q

nerve of the musculus Uvulae

A

left half by left Vagus CN 10
right half by right vagus
both via the pharyngeal plexus

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77
Q

function of the musculus Uvulae

A

elevates the uvula

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78
Q

origin of the Levator Veli Palatini

A

inferior surface of the temporal bone

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79
Q

insertion of the Levator Veli Palatini

A

Aponeurosis of soft palate

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80
Q

nerve of the Levator Veli Palatini

A

Vagus Nerve (CN 10) via the pharyngeal plexus

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81
Q

function of the Levator Veli Palatini

A

elevates the soft palate

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82
Q

origin of the Tensor Veli Palatini

A

scaphoid fossa of the medial pterygoid plate, auditory tube

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83
Q

insertion of the Tensor Veli Palatini

A

the tendon winds around the pterygoid hamulus and inserts into the aponeurosis of the soft palate

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84
Q

nerve of the tensor Veli Palatini

A

mandibular division of trigeminal (CN 5)

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85
Q

function of the Tensor Veli Palatini

A

tenses soft palate

opens auditory tube (pressure equalizer)

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86
Q

what are the extrinsic muscles of the tongue?

A

genioglossus
hyoglossus
styloglossus
palatoglossus

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87
Q

origin of the Palatoglossus

A

soft palate

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88
Q

insertion of the palatoglossus

A

sides of the tongue

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89
Q

nerve of the palatoglossus

A

vagus nerve (CN 10) via the pharyngeal plexus

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90
Q

function of the palatoglossus

A

elevates the back of the tongue

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91
Q

what are the muscles located between the superior and middle constrictors?

A

Longitudinal layer of muscle

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92
Q

what are the muscles in the longitudinal layer?

A

stylopharyngeus muscle
palatopharyngeus muscle
Salpingopharyngeus muscle

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93
Q

origin of the Stylopharyngeus muscle?

A

styloid process

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94
Q

insertion of the stylopharyngeus muscle

A

thyroid cartilage, some fibers blend with those of the constrictors

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95
Q

nerve of the stylopharyngeus muscle?

A
Glossopharyngeal nerve (CN 9)
-only one not innervated by CN 10
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96
Q

function of the stylopharyngeus muscle

A

elevates pharynx

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97
Q

origin of palatopharyngeus muscle

A

soft palate

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98
Q

insertion of the Palatopharyngeus

A

wall of pharynx

thyroid cartilage

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99
Q

nerve of the Palatopharyngeus muscle

A

Vagus nerve (CN10) via the pharyngeal plexus

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100
Q

function of the palatopharyngeus muscle?

A

elevates pharynx

narrows oropharynx

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101
Q

origin of the Salpingopharyngeus muscle

A

Torus Tubarius and opeining of the auditory tube

102
Q

insertion of the Salpingopharyngeus muscle?

A

wall of Pharynx

103
Q

nerve of Salpingopharyngeus muscle?

A

Vagus nerve (CN 10) via the pharyngeal plexus

104
Q

function of Salpingopharyngeus muscle

A

elevates the pharynx

-opens auditory tube along with Tensor Veli Palatini

105
Q

the fibers of ______________ and _____________ blend together within the walls of the pharynx.

A

Palatopharyngeus
and
Salpingopharyngeus

106
Q

extrinsic muscles of teh larynx are those which?

A

move the larynx as a whole and can be subdivided into elevators and depressors

107
Q

what are the intrinsic muscles?

A
Cricothyroid muscle
posterior Cricoarytenoid muscle
lateral Cricoarytenoid muscle
transverse Arytenoid muscle
Oblique Arytenoid Muscle
Aryepiglottic muscle
Thyroarytenoid muscle
Thyroepiglottic muscle
Vocalis Muscle
108
Q

Origin of the Cricothyroid muscle

A

Cricoid Cartilage

-raises pitch of voice by increasing tension

109
Q

insertion of Cricothyroid muscle

A

inferior horn and lower lamina of thyroid cartilage

110
Q

nerve of Cricothyroid muscle?

A

external Laryngeal nerve

111
Q

function of Cricothyroid muscle?

A

Tilts thyroid cartilage downward or Cricoid cartilage upward therby tensing the vocal cords

112
Q

function of platysma?

A

depresses the mandible and draws down the corner of the mouth

113
Q

origin of the sternocleidomastoid?

A

sternal head from the front of the manubrium, clavicular head from the third of the clavicle

114
Q

insertion of the sternocleidomastoid

A

lateral surface of mastoid process, lateral half of the superior nuchal line

115
Q

nerve of the sternocleidomastoid

A

accessory nerve (CN XI)

116
Q

function of the sternocleidomastoid?

A

chief flexor of the head

117
Q

origin of the trapezius

A

external occipital protuberance
ligamentous nuchae
spinous processes of the seventh cervical and all thoracic vertebrae

118
Q

insertion of the trapezius

A

the lateral third of the clavicle
spine of the scapula
acromion process

119
Q

nerve of teh trapezius

A

accessory nerve(CN11) and C3 and C4 from the cervical plexus

120
Q

function of the trapezius

A

the upper portion rotates the scapula upward

the lower portion rotates the scapula downward

121
Q

origin of the Omohyoid

A

the inferior belly of omohyoid originates from the upper border of the scapula. it ends in an intermediate tendon located deep to the sternocleidomastoid muscle. the superior belly extends upwards from this tendon

122
Q

insertion of the Omohyoid

A

the body of the hyoid bone

123
Q

nerve of the Omohyoid

A

Ansa Cervicalis (C1,C2,C3)

124
Q

function of the Omohyoid

A

depress the hyoid bone and larynx

125
Q

origin of the Sternohyoid

A

posterior surface of the manubrium
and
the medial end of the clavicle

126
Q

insertion of the sternohyoid

A

the body of the hyoid bone

127
Q

nerve of the sternohyoid

A

Ansa Cervicalis (C1,C2,C3)

128
Q

function of the sternohyoid

A

depresses the hyoid bone and larynx

129
Q

origin of the sternothyroid

A

posterior surface of the manubrium
and
deep inferior to the origin of the sternohyoid

130
Q

function of the sternothyroid

A

depresses the larynx

131
Q

origin of the thyrohyoid

A

oblique line on the lamina of the thyroid cartilage

132
Q

insertion of the thyrohyoid

A

the body of the hyoid bone

133
Q

nerve of the thyrohyoid?

A

C1 through the hypoglossal nerve

134
Q

function of the thyrohyoid

A

depresses the hyoid bone

135
Q

what muscles are known as the infrahyoid muscles?

A

Omohyoid
Sternohyoid
Sternothyroid
Thyrohyoid

136
Q

what are the muscles of the Root of the Neck?

A

Scalenus Anterior
Scalenus Medius
Scalenus Posterior

137
Q

origin of the Scalenus Anterior

A

transverse processes of cervical vertebrae 4 through 6

138
Q

insertion of the scalenus anterior

A

first rib

139
Q

nerve of the scalenus anterior

A

Ventral primary rami of C5 through C8

140
Q

function of the scalenus anterior

A

elevates the first rib during respiration

141
Q

origin of the scalenus medius

A

transverse processes of cervical vertebrae 2 through 7

142
Q

insertion of the scalenus medius?

A

first rib

143
Q

nerve of the scalenus medius

A

ventral primary rami of C3 through C4

144
Q

function of the scalenus medius

A

elevates the first rib during inspiration, flexes and laterally rotates cervical part of vertebral column

145
Q

origin of the scalenus posterior

A

transverse processes of cervical vertebrae 4 through 6

146
Q

insertion of scalenus posterior

A

second rib

147
Q

nerve of the scalenus posterior

A

ventral primary rami of C4 through C8

148
Q

function of scalenus posterior

A

elevates the second rib during inspiration, flexes and laterally rotates cervical part of the vertebral column

149
Q

what are the muscles of the Submandibular Region

A
Digastric Muscle
Mylohyoid Muscle
Geniohyoid Muscle
Genioglossus Muscle
Hypoglossus Muscle
Styloglossus Muscle
Stylohyoid Muscle
150
Q

origin of the digastric muscle

A

posterior belly from the mastoid process

anterior belly from the digastric fossa

151
Q

insertion of the Digastric muscle

A

both bellies insert into the hyoid bone by an intermediate tendon which connects them together. The intermediate tendon is strapped to the hyoid bone by a fibrous loop

152
Q

nerve of the Digastric muscle

A

Posterior belly: cervical branch of the Facial Nerve (CN 7)

Anterior Belly: by nerve to the mylohyoid (CN 5)

153
Q

function of the Digastric Muscle

A

elevates the hyoid bone

-will depress mandible if hyoid is fixed

154
Q

which belly of the digastric Muscle will be paralyzed by Bell’s Palsy?

A

the posterior belly innervated by the cervical branch of the facial nerve

155
Q

origin of the mylohyoid Muscle?

A

Mylohyoid Line

156
Q

insertion of the mylohyoid muscle?

A

body of the hyoid bone

Median Raphe

157
Q

what the fuck is the median Raphe?

A

a fibrous band where muscle fibers from 2 sides come together and interweave (a seam)

158
Q

nerve of the mylohyoid muscle?

A

nerve to the mylohyoid (CN 5)

159
Q

function of the mylohyoid muscle

A

elevates hyoid bone and floor of the mouth

160
Q

origin of the geniohyoid muscle?

A

inferior genial tubercle

161
Q

insertion of the geniohyoid

A

body of the hyoid bone

162
Q

nerve of the geniohyoid muscle

A

C1 fibers through hypoglossal

163
Q

function of the geniohyoid muscle

A

elevates hyoid bone and tongue

164
Q

what is the largest muscle of the tongue?

A

Genioglossus muscle

165
Q

origin of the genioglossus muscle

A

superior genial tubercle

166
Q

insertion of the genioglossus muscle

A

body of the hyoid bone

167
Q

nerve of the genioglossus muscle

A

hypoglossal nerve (lingual branch)

168
Q

function of the genioglossus muscle

A

draws tongue forward, protrudes tip of tongue

169
Q

origin of the hyoglossus muscle?

A

body and greater horn of hyoid bone (upper surface)

170
Q

insertion of Hyoglossus muscle

A

sides of the tongue

171
Q

nerve of the Hyoglossus muscle

A

hypoglossal nerve

172
Q

function of the hypoglossus muscle

A

draws tongue downward

173
Q

origin of the styloglossus muscle

A

styloid process

174
Q

insertion of styloglossus muscle

A

sides of the tongue

175
Q

nerve of the styloglossus muscle

A

hypoglossal nerve

176
Q

function of styloglossus muscle

A

draws tongue upward and backward

177
Q

origin of stylohyoid muscle?

A

styloid process

178
Q

what pierces the stylohyoid muscle?

A

the intermediate tendon of Digastric

179
Q

insertion of the stylohyoid muscle

A

body of hyoid bone

180
Q

nerve of stylohyoid muscle

A

Facial nerv

181
Q

function of stylohyoid muscle

A

elevates hyoid bone and tongue

182
Q

what are the muscles of the soft palate?

A

Musculus Uvulae
Levator Veli Palatini
Tensor Veli Palatini

183
Q

origin of the musculus Uvulae

A

posterior nasal spine

184
Q

insertion of the Musculus Uvulae

A

mucous membrane of uvula

185
Q

nerve of the musculus Uvulae

A

left half by left Vagus CN 10
right half by right vagus
both via the pharyngeal plexus

186
Q

function of the musculus Uvulae

A

elevates the uvula

187
Q

origin of the Levator Veli Palatini

A

inferior surface of the temporal bone

188
Q

insertion of the Levator Veli Palatini

A

Aponeurosis of soft palate

189
Q

nerve of the Levator Veli Palatini

A

Vagus Nerve (CN 10) via the pharyngeal plexus

190
Q

function of the Levator Veli Palatini

A

elevates the soft palate

191
Q

origin of the Tensor Veli Palatini

A

scaphoid fossa of the medial pterygoid plate, auditory tube

192
Q

insertion of the Tensor Veli Palatini

A

the tendon winds around the pterygoid hamulus and inserts into the aponeurosis of the soft palate

193
Q

nerve of the tensor Veli Palatini

A

mandibular division of trigeminal (CN 5)

194
Q

function of the Tensor Veli Palatini

A

tenses soft palate

opens auditory tube (pressure equalizer)

195
Q

what are the extrinsic muscles of the tongue?

A

genioglossus
hyoglossus
styloglossus
palatoglossus

196
Q

origin of the Palatoglossus

A

soft palate

197
Q

insertion of the palatoglossus

A

sides of the tongue

198
Q

nerve of the palatoglossus

A

vagus nerve (CN 10) via the pharyngeal plexus

199
Q

function of the palatoglossus

A

elevates the back of the tongue

200
Q

what are the muscles located between the superior and middle constrictors?

A

Longitudinal layer of muscle

201
Q

what are the muscles in the longitudinal layer?

A

stylopharyngeus muscle
palatopharyngeus muscle
Salpingopharyngeus muscle

202
Q

origin of the Stylopharyngeus muscle?

A

styloid process

203
Q

insertion of the stylopharyngeus muscle

A

thyroid cartilage, some fibers blend with those of the constrictors

204
Q

nerve of the stylopharyngeus muscle?

A
Glossopharyngeal nerve (CN 9)
-only one not innervated by CN 10
205
Q

function of the stylopharyngeus muscle

A

elevates pharynx

206
Q

origin of palatopharyngeus muscle

A

soft palate

207
Q

insertion of the Palatopharyngeus

A

wall of pharynx

thyroid cartilage

208
Q

nerve of the Palatopharyngeus muscle

A

Vagus nerve (CN10) via the pharyngeal plexus

209
Q

function of the palatopharyngeus muscle?

A

elevates pharynx

narrows oropharynx

210
Q

origin of the Salpingopharyngeus muscle

A

Torus Tubarius and opeining of the auditory tube

211
Q

insertion of the Salpingopharyngeus muscle?

A

wall of Pharynx

212
Q

nerve of Salpingopharyngeus muscle?

A

Vagus nerve (CN 10) via the pharyngeal plexus

213
Q

function of Salpingopharyngeus muscle

A

elevates the pharynx

-opens auditory tube along with Tensor Veli Palatini

214
Q

the fibers of ______________ and _____________ blend together within the walls of the pharynx.

A

Palatopharyngeus
and
Salpingopharyngeus

215
Q

extrinsic muscles of teh larynx are those which?

A

move the larynx as a whole and can be subdivided into elevators and depressors

216
Q

what are the intrinsic muscles?

A
Cricothyroid muscle
posterior Cricoarytenoid muscle
lateral Cricoarytenoid muscle
transverse Arytenoid muscle
Oblique Arytenoid Muscle
Aryepiglottic muscle
Thyroarytenoid muscle
Thyroepiglottic muscle
Vocalis Muscle
217
Q

Origin of the Cricothyroid muscle

A

Cricoid Cartilage

-raises pitch of voice by increasing tension

218
Q

insertion of Cricothyroid muscle

A

inferior horn and lower lamina of thyroid cartilage

219
Q

nerve of Cricothyroid muscle?

A

external Laryngeal nerve

220
Q

function of Cricothyroid muscle?

A

Tilts thyroid cartilage downward or Cricoid cartilage upward therby tensing the vocal cords

221
Q

origin of the posterior Cricoarytenoid muscle

A

posterior surface of lamina of cricoid cartilage

222
Q

insertion of the posterior Cricoarytenoid muscle/

A

muscular process of arytenoid cartilage

223
Q

nerve of posterior Cricoarytenoid muscle?

A

recurrent laryngeal nerve

224
Q

function of the posterior cricoarytenoid muscle?

A

abducts the vocal folds

225
Q

origin of lateral cricoarytenoid muscle?

A

arch of cricoid cartilage

226
Q

insertion of lateral Cricoarytenoid muscle

A

arch of cricoid cartilage

227
Q

insertion of lateral cricoarytenoid muscle

A

muscular process of arytenoid cartilage

228
Q

nerve of lateral cricoarytenoid muscle?

A

recurrent laryngeal nerve

229
Q

function of lateral cricoarytenoid muscle?

A

adducts the vocal folds

230
Q

origin of the transverse arytenoid muscle

A

posterior surface of arytenoid cartilage

231
Q

insertion of the Transverse Arytenoid muscle

A

posterior surface of opposite arytenoid cartilage

232
Q

nerve of the Transverse Arytenoid muscle?

A

recurrent laryngeal nerve

233
Q

function of Transverse Arytenoid muscle

A

adducts the vocal folds

234
Q

origin of Oblique Arytenoid muscle

A

muscular process of arytenoid cartilage

235
Q

insertion of Oblique Arytenoid Muscle?

A

apex of opposite arytenoid cartilage

236
Q

nerve of Oblique Arytenoid Muscle

A

recurrent laryngeal nerve

237
Q

function of Oblique Arytenoid Muscle

A

adducts the vocal folds

238
Q

origin of Aryepiglottic Muscle

A

apex of arytenoid cartilage

239
Q

insertion of Aryepiglottic muscle

A

side of epiglottic cartilage

240
Q

nerve of Aryepiglottic muscle

A

recurrent laryngeal nerve

241
Q

function of Aryepiglottic muscle

A

closes the laryngeal inlet

  • by drawing aryepiglottic folds together
  • during swallowing
242
Q

origin of Thyroarytenoid muscle

A

inner surface of thyroid lamina

243
Q

insertion of Thyroarytenoid muscle

A

arytenoid cartilage

244
Q

nerve of Thyroarytenoid muscle

A

recurrent laryngeal nerve

245
Q

function of the Thyroarytenoid muscle

A

shortens and relaxes the vocal folds by drawing the arytenoid cartilages forward

246
Q

origin of the Thyroepiglottic muscle

A

inner surface of thyroid lamina

247
Q

insertions of Thyroepiglottic muscle

A

lateral margin of epiglottis

248
Q

nerve of thyroepiglottic muscle

A

recurrent laryngeal nerve

249
Q

function of thyroepiglottic muscle

A

closes the laryngeal inlet

250
Q

origin of Vocalis Muscle

A

inner surface of thyroid muscle

251
Q

insertion of Vocalis Muscle

A

vocal process of arytenoid cartilage

252
Q

nerve of Vocalis muscle

A

recurrent laryngeal nerve

253
Q

function of Vocalis muscle

A

adjusts tension on the vocal cords during phonation