Pharyngeal and Laryngeal muscles

Question 1

Origin of superior constrictor

Answer 1

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

Question 2

Origin of middle constrictor

Answer 2

Originatesfromlowerhalfofthestylohyoidligament,thelesserhornofthehyoidandthegreater
hornofthehyoid.

Question 3

Origin of inferior constrictor

Answer 3

Originatesfromtheobliquelineofthethyroidcartilage,thecricoidcartilageandthetendinousarch
overlyingthecricothyroidmuscle.

Question 4

Innervation of constrictor muscles

Answer 4

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

Question 5

Action of constrictor muscles

Answer 5

Thesemusclesconstrictthepharynxwhenthey
contract.Whentheycontractsequentiallyfromtoptobottomduringswallowing,theymoveabolusof
foodthroughthepharynxandintotheesophagus.

Question 6

Origin of stylopharyngeus

Answer 6

styloid process

Question 7

insertion of stylopharyngeus

Answer 7

superior horn of thyroid cartilage and upper border of thyroid lamina

Question 8

Origin of salpingopharyngeus

Answer 8

cartilaginous part of auditory tube (torus tubaris)

Question 9

Origin of palatopharyngeus

Answer 9

soft palate

Question 10

Insertion of salpingo- and palatopharyngeus muscles

Answer 10

blend into the posterior wall of the pharynx

Question 11

Innervation of stylopharyngeus

Answer 11

IX (BE-3rd)

Question 12

Innervation of salpingo- and palatopharyngeus muscles

Answer 12

X (BE-4th/6th)

Question 13

Action of longitudinal muscles

Answer 13

Thelongitudinalmuscleselevatethepharyngealwallorduringswallowing,theypullthepharyngeal
wallupandoverabolusoffoodbeingmovedthroughthepharynxandintotheesophagus.

Question 14

Origin of cricothyroid

Answer 14

Anterolateral aspect of arch of cricoid

cartilage.

Question 15

Insertion of cricothyroid

Answer 15

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

Question 16

Innervation of cricothyroid

Answer 16

External branch of superior

laryngeal nerve from the vagus nerve [X].

Question 17

Action of cricothyroid

Answer 17

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

Question 18

Origin of posterior cricoarytenoid

Answer 18

Oval depression on posterior

surface of lamina of cricoid cartilage.

Question 19

Insertion of posterior cricoarytenoid

Answer 19

Posterior surface of muscular

process of arytenoid cartilage.

Question 20

Innervation of posterior cricoarytenoid

Answer 20

Recurrent laryngeal branch of

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

Question 21

Action of posterior criocarytenoid

Answer 21

Abduction and external rotation

of the arytenoid cartilage.

Question 22

Origin of lateral cricoarytenoid

Answer 22

Superior surface of arch of cricoid

cartilage.

Question 23

Insertion of lateral cricoarytenoid

Answer 23

Anterior surface of muscular

process of arytenoid cartilage

Question 24

Innervation of lateral cricoarytenoid

Answer 24

Recurrent laryngeal branch of

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

Question 25

Action of lateral cricoarytenoid

Answer 25

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

Question 26

Origin of transverse arytenoid

Answer 26

Lateral border of posterior | surface of arytenoid cartilage.!

Question 27

Insertion of transverse arytenoid

Answer 27

Lateral border of posterior surface of opposite arytenoid cartilage.

Question 28

Innervation of transverse arytenoid

Answer 28

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

Question 29

Action of transverse arytenoid

Answer 29

Adduction of arytenoid | cartilages.

Question 30

Origin of oblique arytenoid

Answer 30

Posterior surface of muscular | process of arytenoid cartilage.

Question 31

Insertion of oblique arytenoid

Answer 31

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

Question 32

Innervation of oblique arytenoid

Answer 32

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

Question 33

Action of oblique arytenoid

Answer 33

Sphincter of the laryngeal | inlet.

Question 34

Origin of thryoarytenoid

Answer 34

Thyroid angle and adjacent | cricothyroid ligament.

Question 35

Insertion of thryoarytenoid

Answer 35

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

Question 36

Innervation of thyroarytenoid

Answer 36

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

Question 37

Action of thryoarytenoid

Answer 37

Sphincter of vestibule and of | laryngeal inlet.

Question 38

Origin of vocalis

Answer 38

Lateral surface of vocal process of arytenoid | cartilage.

Question 39

Insertion of vocalis

Answer 39

Vocal ligament and thyroid angle

Question 40

Innervation of vocalis

Answer 40

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

Question 41

Action of vocalis

Answer 41

adjusts tension in vocal folds