Anatomy - Larynx Flashcards

(65 cards)

1
Q

what is the larynx located between?

A

pharynx and trachea

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2
Q

the larynx is enclosed in the _____________ fascia of the neck

A

the larynx is enclosed in the PRETRACHEAL fascia of the neck

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3
Q

what else does the pretracheal fascia enclose?

A
strap muscles
thyroid gland
trachea and larynx
oesophagus and pharynx
recurrent laryngeal nerves
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4
Q

larynx location:

anterior to what?
between what?
what spinal levels?

A

larynx location:

anterior to laryngopharynx
between the carotid sheath
between C4-C6

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5
Q

which of the following structures are palpable?

  1. manubrium
  2. clavicle
  3. trachea
  4. cricoid cartilage
  5. thyroid cartilage
  6. hyoid bone
  7. mental process of mandible
  8. lower border of mandible
  9. angle of mandible
  10. T1 spinous process
  11. C7 spinous process
  12. cervical vertebrae transverse processes
  13. mastoid process
  14. external occipital protuberance
A

all of them!

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6
Q

the raising of what toward what reduces the chance of aspiration?

A

raising of larynx towards the oesophagus

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7
Q

what is engages if there is aspiration of food particles into the respiratory tract?

A

cough reflex

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8
Q

name the opening into the airway

A

laryngeal inlet

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9
Q

what closes the laryngeal inlet when it moves posteriorly?

A

epiglottis

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10
Q

most people have a _________ septum

A

most people have a DEVIATED septum

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11
Q

what is the feature of the lateral wall of the nasal cavity?

A

conchae

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12
Q

the larynx is composed of __________ suspended on what bone?

A

the larynx is composed of CARILAGES suspended on the HYOID bone

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13
Q

what attaches the thyroid cartilage to the hyped bone?

A

thyrohyoid membrane

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14
Q

what is the anatomical word for the Adam’s apple?

A

laryngeal prominence of the thyroid cartilage

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15
Q

the ________ ____ is a part of the thyroid cartilage projecting superiorly from the posterior aspect of the cartilage

A

the SUPERIOR HORN is a part of the thyroid cartilage projecting superiorly from the posterior aspect of the cartilage

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16
Q

name the cartilage immediately inferior to the thyroid cartilage

A

cricoid cartilage

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17
Q

name the joint between the thyroid and cricoid cartilage

A

cricothyroid joint

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18
Q

what part of the thyroid cartilage is in the cricothyroid joint?

A

inferior horn of the thyroid cartilage

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19
Q

what cartilage is situated immediately inferior to the cricoid cartilage?

A

1st tracheal ring

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20
Q

name the pair of cartilages found posterior to the thyroid cartilage

A

arytenoid cartilages

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21
Q

name the joint between the arytenoid and cricoid cartilages

A

cricoarytenoid joint

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22
Q

name the 2 processes found on each arytenoid cartilage

A

muscular and vocal process

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23
Q

in the cricoid pressure manoeuvre, the _______ of the cricoid cartilage compresses the __________ as you press it against the C_ vertebral body

the ____________ is ______ but the _______ is open so prevents ___________ but allows ___________

A

in the cricoid pressure manoeuvre, the LAMINA of the cricoid cartilage compresses the OESOPHAGUS as you press it against the C6 vertebral body

the OESOPHAGUS is CLOSED but the LARYNX is open so prevents ASPIRATION but allows VENTILATION

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24
Q

name the other word for laryngeal inlet

A

laryngeal aditus

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25
features of the larynx: 1. laryngeal _________ located most superiorly 2. ______ vocal cord aka __________ fold 3. laryngeal __________ 4. ____ vocal cord 5. infra-glottic _______
features of the larynx: 1. laryngeal vestibule located most superiorly 2. FALSE vocal cord aka VESTIBULAR fold 3. laryngeal VENTRICLE 4. TRUE vocal cord 5. infra-glottic CAVITY
26
name the 2 pairs of vocal cords
true and false
27
name the membrane between the vestibular ligament and the epiglottis
quadrangular membrane
28
the conus elasticus is between what?
cricoid cartilage and the vocal ligament
29
true or false vocal cords: bwetween the arytenoid cartilage and epiglottis
false vocal cords
30
true or false vocal cords: vocal process of arytenoid cartilage to thyroid cartilage
true vocal cords
31
name the space between the true vocal cords seen on laryngoscopy
rima glottidis
32
where is the laryngoscope placed into?
vallecula (between the epiglottis and tongue)
33
the superior border of the quadrangular membrane is also called the _______________ fold
the superior border of the quadrangular membrane is also called the ARYEPIGLOTTIC fold
34
the intrinsic muscles of the larynx are all __________ in nature and are seen between cartilages causing movement of the ______ ______
the intrinsic muscles of the larynx are all SKELETAL in nature and are seen between cartilages causing movement of the VOCAL CORDS
35
the intrinsic muscles of the larynx are all innervated by CN __
the intrinsic muscles of the larynx are all innervated by CN X
36
impact of vocal cords: 1. increases pitch 2. decreases pitch 3. quieter 4. louder
1. increases pitch - TENSION 2. decreases pitch - RELAXATION 3. quieter - ADDUCTION 4. louder - ABDUCTION
37
name the TENSORS muscle of the vocal cords
cricothyroid muscles increases pitch nods the thyroid cartilage
38
name the attachments of the cricothyroid muscle
anterolateral cricoid cartilage to the inferior horn of the thyroid cartilage
39
name the RELAXORS muscle of the vocal cords
thyroarytenoid muscles decreases pitch
40
name the attachments of the thyroarytenoid muscle
posterior thyroid to anterior arytenoid cartilage
41
name the ADDUCTORS muscles of the vocal cords
lateral cricoid-arytenoid muscles and arytenoid muscles makes voice quieter
42
name the attachments of the lateral cricoid-arytenoid muscles
muscular process of the arytenoid to anterior cricoid cartilage
43
name the attachments of the arytenoid muscles
from one arytenoid cartilage to another transverse and oblique band
44
name the ABDUCTORS muscle of the vocal cords
posterior crico-arytenoid muscles makes voice louder - opens rims glottidis
45
name the attachments of the posterior crico-arytenoid muscles
posterior cricoid cartilage to the muscular process of arytenoid cartilage
46
what muscles are contracted in forced respiration?
posterior crico-arytenoid muscles
47
what muscles are contracted in phonation?
arytenoids contract to assist lateral crico-arytenoids
48
what muscles are contracted in whispering?
lateral crico-arytenoids
49
supra-glottis tumours drain to what?
superior deep cervical nodes
50
95% of glottic tumours stay where?
on the cords
51
what do glottic tumours present with?
voice change/airway obstruction
52
sub-glottic tumours spread to where?
paratracheal nodes also present with voice change/airway obstruction
53
name 3 resolutions to removal of the larynx (post-laryngectomy)
tracheo-oesophageal puncture oesophageal speech electrolarynx
54
all intrinsic muscles apart from cricothyroid are supplied by what nerve?
inferior laryngeal nerve
55
mucosa above the folds is supplied by what nerve?
INTERNAL laryngeal nerve
56
mucosa below the folds is supplied by what nerve?
INFERIOR laryngeal nerve
57
at what level does the left recurrent laryngeal nerve become the inferior laryngeal nerve?
cricothyroid joint
58
what nerve supplies the motor to cricothyroid muscle?
external laryngeal nerve
59
the superior laryngeal nerve is a branch of that nerve?
vagus nerve (CN X)
60
the superior laryngeal nerve splits into what?
internal and external laryngeal nerves
61
the vagus nerve passes through what to exit the cranium?
jugular foramen
62
the vagus nerve descends through the neck within what?
carotid sheath
63
CN X is clinically tested in the pharynx by asking the patient to do what?
swallow a small sip of water and watch larynx move up and down
64
CN X in the larynx is clinically tested in 2 ways - name them
listen to patient speak ask patient to cough
65
what are you looking for when you ask the patient to speak?
is their voice hoarse? are the intrinsic muscles of larynx functioning normally to move the vocal cords