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ENT > Anatomy And Physio Of Larynx > Flashcards

Anatomy And Physio Of Larynx Flashcards

1
Q

Cartilages of larynx

Unpaired?

A
  1. thyroid
  2. cricoid
  3. epiglottis
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2
Q

Paired cartilages of larynx

A
  1. arytenoid
  2. corniculate
  3. cuneiform
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3
Q

All cartilages ossify EXCEPT
All cartilages are hyaline EXCEPT
(Same answers)

A

ECC

  1. epiglottis
  2. corniculate
  3. cuneiform
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4
Q

Larynx development
Start?
Complete?

A

Start- 4th week

Complete- 3rd month

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5
Q

Larynx size increases up to what age?

A

3 yrs

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6
Q

Angle of thyroid in females

A

120 degree

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7
Q

Angle of thyroid in males

A

90 degree

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8
Q

Corniculate cartilages (other name )

A

Cartilage of Santorini

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9
Q

Cuneiform cartilage(other name)

A

Cartilage of wrisberg

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10
Q

Joints of larynx

A
  1. cricoaryetenoid

2. cricothyroid

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11
Q

Muscles on thyroid cartilage

A

ST-sternothyroid
IC-inferior constrictor
TH-thyrohyoid

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12
Q

Intrinsic muscles of larynx:

Only abductor

A

Posterior cricoaryetenoid

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13
Q

Intrinsic muscles of larynx:

Adductors(4)

A
  1. thyroaryetenoid(external)
  2. lateral cricoaryetenoid
  3. interaryetenoid
  4. cricothyroid
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14
Q

Intrinsic muscles of larynx:

Tensors

A
  1. cricothyroid(main)

2. vocalis(internal part of TA)

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15
Q

Intrinsic muscles of larynx:

Opener

A

Thyroepiglottic(part of TA)

Anterior

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16
Q

Intrinsic muscles of larynx

Closers

A

Interaryetenoid(oblique part)

Aryeepiglottic(post. oblique part of IA)

17
Q

Functions of larynx

A
  1. protection of lower airway
  2. phonation
  3. respiration
  4. fixation of chest
18
Q

Cricoarytenoid joint movement

A
  1. rotatory(vertical axis)

2. gliding (open and close)

19
Q

Cricothyroid joint movement

A

Rotates(transverse axis)

20
Q

Extrinsic muscles of larynx

Primary Elevators

A 
Stylopharyngeus
Salpingopharyngeus
Palatopharyngeus
Thyrohyoid
(Attached to thyroid)
21
Q

Extrinsic muscle of larynx

Secondary elevators

A 
Mylohyoid(main)
Digastric
Stylohyoid
Geniohyoid
(Attached to hyoid)
22
Q

Extrinsic muscle of larynx

Depressors

A

Sternohyoid
Sternothyroid
Omohyoid

23
Q

Lymphatic drainage of larynx

Above and below vocal cords

A

Above VC (lymphatics which pierce thyrohyoid membrane)- upper deep cervical lymph node

Below VC ( “ “ Cricothyroid membrane)—->prelaryngeal and pretracheal lymph node———->lower deep cervical lymph and mediastinal lymph nodes)

24
Q

Lymphatics in vocal cord

A

NONE!!! Hence rarely metastases here

ENT (34 decks)

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