Larynx and Laryngopharynx Flashcards Preview

MD2- Neuroscience Block > Larynx and Laryngopharynx > Flashcards

Flashcards in Larynx and Laryngopharynx Deck (13):
1

the larynx extends from the [....] to [.....]

epiglottis to C6 (lower border of cricoid cartilage)

2

laryngeal skeleton is made up of the [...] bone, [....] cartilage, and [....] cartilage.

each section is connect by a membrane. (thyrohyoid membrane, cricothyroid membrane)

hyoid bone

thyroid cartilage (adams apple, posterior deficiency=laryngeal inlet)

cricoid cartilage (completely closed)

3

the laryngeal inlet connect the [....] and [...] and is formed by the posterior deficiency of the [....] cartilage.

pharynx and larynx
thyroid cartilage.

4

vocal cords need to be [...] for phonation and [....] for breathing

the vocal cord position is adjusted by the [.....] (muscles).

adducted (pushing air through closed membrane creates vibration)

abducted for breathing.

intrinsic muscles of the larynx.

5

intrinsic muscles of the larynx:
the cricothyroid acts to.....

lengthen the vocal cords

6

intrinsic muscles of the larynx:
the posterior cricoarytenoid acts to....
the lateral cricoarytenoid acts to....

abduct
adduct

7

the transverse and oblique arytenoid act to .....

close the rima glottis (opening between vocal cords and arytenoid cartilages).

8

vocalis and thyroarytenoid act to....

relax the vocal cords

9

the nerves of the larynx are branches of CN.....

the inferior laryngeal nerve supplies all the intrinsic muscles except [......].
the external laryngeal nerve supplies the [....] muscle.

the internal laryngeal nerve (a branch of Vagus nerve) supplies sensory to the [....].

recurrent laryngeal nerve innervates the [....] muscles, and can cause hoarse voice/stridor when damaged.


V - Vagus nerve

cricothyroid.
cricothyroid.

laryngeal mucosa

abductor and adductor

10

because the tracheal area is highly vascularized, with presence of the [....], a [....] membrane puncture may be preferrable to a tracheotomy to establish an emergency airway.

superior laryngeal vessels, internal laryngeal vein and inferior thyroid vein.

cricothyroid membrane puncture.

11

which cranial nerves supplies the pharynx?

-glossopharyngeal (IX) - pharyngeal (afferent arc of gag reflex)

-trigeminal nerve (V) - maxillary division, pharyngeal brances

-vagus nerve (X) - internal laryngeal nerve

12

which cranial nerve supply's motor innervation to most of the pharynx? which muscle is the exception?

-most from pharyngeal branches of Vagus nerve (CN X)

-except for stylopharyngeus, which is supplied by CN IX (glossopharyngeal)

13

swallowing process:
1.bolus of food is shaped and pushed by [...] to the palate.
2.soft palate descends and [....] grip and push bolus down into the [.....].
3.soft palate is [....] and tightened to prevent bolus from entering the nasal cavity.
4.[.....] are elevated to bring bolus closer to the oesophagus.
5.[.....] is closed to prevent bolus from entering trachea.
6.bolus is pushed down the oropharynx and over the [....]
7. bolus forced down the [....] and into the oesophagus
8. larynx is depressed to return to normal position mostly by [.....] force

tongue
palatal arches
orpharynx
elevated
larynx and pharynx
laryngeal inlet
epiglottis
laryngopharynx
elastic recoil