Pharynx And Larynx Flashcards

1
Q

At which level does the pharynx becomes continuous with the esophagus?

A

Opposite the 6th cervical vertebrae

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2
Q

How does the pharynx is connected to the tympanic membrane?

A

By the auditory tube

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3
Q

What are the muscles that form the wall of the pharynx?

A

1- superior, middle, inferior ( lower part called cricopharyngeus ) constrictor muscles. Fibers run in a circular direction

2- stylopharyngeus and salpingopharyngeus. Fibers run in a longitudinal direction

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4
Q

The lower part of the inferior constrictor muscle, which arises from the cricoid cartilage.

A

The cricopharyngeus muscle

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5
Q

What is killian’s dehiscence?

A

Area on the posterior pharyngeal wall, between the upper propulsive part of the inferior constrictor muscle and the lower sphincteric part, the cricopharyngeus.

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6
Q

Part of the pharynx lies above the soft palate and behind the nasal cavities.

A

The nasal pharynx

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7
Q

Where does the pharyngeal tonsils located?

A

In the submucosa of the roof of the nasal pharynx

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8
Q

Where does the auditory tube located?

A

On the lateral wall of the nasal pharynx

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9
Q

Where does the palatine tonsils located?

A

Between the palatoglossal fold and the palatopharyngeal fold

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10
Q

The interval between the two palatoglossal folds, and marks the boundary between the mouth and the tongue.

A

Oropharyngeal isthmus

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11
Q

What forms the lateral wall of the laryngeal pharynx?

A

The thyrohyoid membrane and the thyroid cartilage

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12
Q

All the muscles of the pharynx are supplied by the pharyngeal plexus, except.

A

The stylopharyngeus muscle, by the glossopharyngeal nerve CN 9

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13
Q

A muscle of the pharynx aids in raising the the soft palate to close the nasal pharynx.

A

The superior constrictor muscle

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14
Q

A muscle works as a sphincter at the lower end of the pharynx.

A

The cricopharyngeus muscle

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15
Q

What is the sensory nerve supply of the pharyngeal mucous membrane?

A

Nasal pharynx: the maxillary nerve (V2).
Oral pharynx: the glossopharyngeal nerve (CN 9) (same nerve that supply the stylopharyngeus muscle).
Laryngeal pharynx: the internal laryngeal nerve (branch of the vagus).

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16
Q

What is the blood supply of the pharynx?

A

Ascending pharyngeal arteries - tonsillar branches of facial arteries - branches of maxillary and lingual arteries.

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17
Q

What is the lymph drainage of the pharynx?

A

Directly: into the deep cervical lymph nodes.
Indirectly: via the retropharyngeal or paratracheal nodes

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18
Q

What are the structures that lies lateral to the superior constrictor muscle?

A

1- the styloglossal muscle.
2- the loop of the facial artery.
3- the internal carotid artery.

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19
Q

What is the blood supply of the palatine tonsils?

A

Arteries:The tonsillar branch of the facial artery.
Veins: the external palatine, pharyngeal or facial veins.

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20
Q

What forms the Waldeyer’s ring of lymphoid tissue?

A
  • Palatine and tubal tonsils laterally.
  • Pharyngeal tonsil superiorly.
  • Lingual tonsil inferiorly.
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21
Q

At which level of the vertebrae does the larynx lie?

A

At the level of the fourth, fifth and sixth cervical vertebrae

22
Q

What are the cartilages of the larynx?

A

Thyroid cartilage - Cricoid cartilage - Arytenoid cartilage - Corniculate cartilage - Cuneiform cartilage - Epiglottis

23
Q

What is the largest cartilage of the larynx?

A

The thyroid cartilage

24
Q

Articulate with the upper border of the lamina of the cricoid cartilage.

A

The arytenoid cartilage

25
Q

Articulate with the apex of the arytenoid cartilages.

A

The corniculate cartilage

26
Q

Which laryngeal cartilage has the vocal process?

A

The arytenoid cartilage

27
Q

A laryngeal cartilage that found on the corniculate cartilage.

A

The cuneiform cartilage

28
Q

What holds the epiglottis?

A

It is attached to the back of the thyroid cartilage. The sides are attached to the arytenoid cartilages by the aryepiglottic folds

29
Q

What forms the inlet of the larynx?

A

In front: epigleottis.
Laterally: aryepiglottic fold of mucous membrane.
Posteriorly: arytenoid cartilage + the corniculate cartilage.

30
Q

Lies within and strengthen the aryepiglottic fold.

A

The corniculate cartilage

31
Q

The piriform fossa.

A

Bounded medially by the aryepiglottic fold and laterally by the thyroid cartilage and the thyrohyoid membrane

32
Q

Fixed folds on each side of the larynx.

A

The vestibular fold (vascular and pink in color)

33
Q

Mobile fold on each side of the larynx.

A

The vocal fold (avascular and white)

34
Q

The gap between the vocal cords.

A

Rima glottidis or glottis (bounded in front by the vocal cords and behind by the medial surface of arytenoid cartilages)

35
Q

What is the narrowest part of the larynx?

A

The glottis

36
Q

What is the narrowest part of the larynx in children?

A

Within the cricoid cartilage

37
Q

The cavity of the larynx divided into three regions.

A
  • the vetisbule.
  • the middle region.
  • the lower region.
38
Q

A small recess on each side of the larynx between the vestibular and vocal folds.

A

Sinus of the larynx

39
Q

What are the muscles that elevates the larynx (hyoid bone)?

A
  • digastrics.
  • stylohyoid.
  • mylohyoid.
  • geniohyoid.
  • stylopharyngeus.
  • salpingopharengeus.
  • palatopharengeus.
40
Q

What are the muscles that depresses the larynx?

A

Sternothyroid - sternohyoid - omohyoid muscles

41
Q

What are the two muscles that responsible for modification of laryngeal inlet?

A

Narrowing: the oblique arytenoid muscle.
Widening: the thyroepiglottic muscle.

42
Q

What is the muscle responsible for tensing the vocal cords?

A

The cricothyroid muscle

43
Q

What is the muscle responsible for relaxing the vocal cords?

A

The thyroarytenoid (vocalis) muscle

44
Q

What is the muscle responsible for adducting the vocal cords?

A

The lateral cricoarytenoid muscle

45
Q

What is the muscle responsible for abducting the vocal cords?

A

The posterior cricoarytenoid muscle

46
Q

What is the muscle responsible for approximating the arytenoid cartilages?

A

The transverse arytenoid muscle

47
Q

All the muscles of the larynx are supplied by the recurrent laryngeal nerve except.

A

The cricothyroid

48
Q

The frequency or pitch of the sound is determined by.

A

Length + tension of the vocal ligaments

49
Q

The quality of the voice depend on the.

A

Resonators above the larynx

50
Q

What is the covering of the mucous membrane of the vocal cords?

A

Stratified squamous epithelium

51
Q

What is the nerve supply of the larynx?

A

Above the vocal cords: internal laryngeal nerve ( branch of the superior laryngeal branch of the vagus ).

Below the vocal cords: recurrent laryngeal nerve.

52
Q

What is the blood supply of the larynx?

A

Upper half: superior laryngeal artery (from the s.thyroid artery).
Lower half: inferior laryngeal artery (from the i.thyroid artery)