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Gross Anatomy > Pharyngeal and Laryngeal muscles > Flashcards

Pharyngeal and Laryngeal muscles Flashcards

1
Q

Origin of superior constrictor

A

Originatesfrom the lower part of the medial pterygoid plate,the hamulus, pterygomandibular raphe, mylohyoidlineofthemandibleandlateraltongue.

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2
Q

Origin of middle constrictor

A

Originatesfromlowerhalfofthestylohyoidligament,thelesserhornofthehyoidandthegreater
hornofthehyoid.

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3
Q

Origin of inferior constrictor

A

Originatesfromtheobliquelineofthethyroidcartilage,thecricoidcartilageandthetendinousarch
overlyingthecricothyroidmuscle.

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4
Q

Innervation of constrictor muscles

A

the pharyngeal plexus fibers of CN X —> 4th/6th arch (BE)

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5
Q

Action of constrictor muscles

A

Thesemusclesconstrictthepharynxwhenthey
contract.Whentheycontractsequentiallyfromtoptobottomduringswallowing,theymoveabolusof
foodthroughthepharynxandintotheesophagus.

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6
Q

Origin of stylopharyngeus

A

styloid process

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7
Q

insertion of stylopharyngeus

A

superior horn of thyroid cartilage and upper border of thyroid lamina

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8
Q

Origin of salpingopharyngeus

A

cartilaginous part of auditory tube (torus tubaris)

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9
Q

Origin of palatopharyngeus

A

soft palate

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10
Q

Insertion of salpingo- and palatopharyngeus muscles

A

blend into the posterior wall of the pharynx

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11
Q

Innervation of stylopharyngeus

A

IX (BE-3rd)

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12
Q

Innervation of salpingo- and palatopharyngeus muscles

A

X (BE-4th/6th)

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13
Q

Action of longitudinal muscles

A

Thelongitudinalmuscleselevatethepharyngealwallorduringswallowing,theypullthepharyngeal
wallupandoverabolusoffoodbeingmovedthroughthepharynxandintotheesophagus.

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14
Q

Origin of cricothyroid

A

Anterolateral aspect of arch of cricoid

cartilage.

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15
Q

Insertion of cricothyroid

A

Oblique part – lesser horn of the
thyroid cartilage; Straight part – inferior
margin of the thyroid cartilage.

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16
Q

Innervation of cricothyroid

A

External branch of superior

laryngeal nerve from the vagus nerve [X].

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17
Q

Action of cricothyroid

A

Forward and downward rotation of
the thyroid cartilage at the cricothyroid
joint

18
Q

Origin of posterior cricoarytenoid

A

Oval depression on posterior

surface of lamina of cricoid cartilage.

19
Q

Insertion of posterior cricoarytenoid

A

Posterior surface of muscular

process of arytenoid cartilage.

20
Q

Innervation of posterior cricoarytenoid

A

Recurrent laryngeal branch of

the vagus nerve [X]. (Inferior laryngeal nerve)

21
Q

Action of posterior criocarytenoid

A

Abduction and external rotation

of the arytenoid cartilage.

22
Q

Origin of lateral cricoarytenoid

A

Superior surface of arch of cricoid

cartilage.

23
Q

Insertion of lateral cricoarytenoid

A

Anterior surface of muscular

process of arytenoid cartilage

24
Q

Innervation of lateral cricoarytenoid

A

Recurrent laryngeal branch of

the vagus nerve [X]. (inferior laryngeal nerve)

25
Q

Action of lateral cricoarytenoid

A

Internal rotation of the
arytenoid cartilages and adduction of
vocal folds.

26
Q

Origin of transverse arytenoid

A

Lateral border of posterior

surface of arytenoid cartilage.!

27
Q

Insertion of transverse arytenoid

A

Lateral border of
posterior surface of opposite
arytenoid cartilage.

28
Q

Innervation of transverse arytenoid

A

Recurrent laryngeal

branch of the vagus nerve [X]. (inf. laryngeal nerve)

29
Q

Action of transverse arytenoid

A

Adduction of arytenoid

cartilages.

30
Q

Origin of oblique arytenoid

A

Posterior surface of muscular

process of arytenoid cartilage.

31
Q

Insertion of oblique arytenoid

A

Posterior surface of apex of
adjacent arytenoid cartilage;
extends into aryepiglottic fold.

32
Q

Innervation of oblique arytenoid

A

Recurrent laryngeal

branch of the vagus nerve [X]. (inf. laryngeal nerve)

33
Q

Action of oblique arytenoid

A

Sphincter of the laryngeal

inlet.

34
Q

Origin of thryoarytenoid

A

Thyroid angle and adjacent

cricothyroid ligament.

35
Q

Insertion of thryoarytenoid

A

Anterolateral surface of
arytenoid cartilage; some fibers
continue in aryepiglottic folds to
the lateral margin of the epiglottis

36
Q

Innervation of thyroarytenoid

A

Recurrent laryngeal

branch of the vagus nerve [X]. (inf laryngeal artery

37
Q

Action of thryoarytenoid

A

Sphincter of vestibule and of

laryngeal inlet.

38
Q

Origin of vocalis

A

Lateral surface of vocal process of arytenoid

cartilage.

39
Q

Insertion of vocalis

A

Vocal ligament and thyroid angle

40
Q

Innervation of vocalis

A

Recurrent laryngeal branch of the vagus nerve [X]. (inf. laryngeal nerve)

41
Q

Action of vocalis

A

adjusts tension in vocal folds

Gross Anatomy (6 decks)

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