Clinical Relevance Of The Larynx 2 Flashcards
What are the two types of pretracheal fascia
Visceral or muscular
Where si the larynx found.
Anterior to laryngopharynx
Between carotid sheaths
Between c4-c6
What sit he larynx an important factor in
Upper RESP tract
What does the larynx communicate with
Oro and naso pharynx above
Becomes trachea below at c6 cricoid cart
How does the larynx help the URT
Keeps it open/patent
What si the larynx made of
Rigid Skelton of cartilage and little bone
What are the other functions of the larynx
Help prevent entry of foreign bodies - vocal cords and cough reflex
Produce sound - vocal cords
What does the full Skelton of the larynx consist of
Epiglottis Hyoid bone Thyrohyoid mem Thyroid cartilage Crop thyroid mem Cricoid cart Trachea
What is the only complete ring of cartilage
Cricoid
What si the Cricothyroid mem imp For
Access for puncture
Why is the epiglottis different
Made of elastic cartilage rather than hyaline
What does the trachea consist of
C ring of cartilage but smooth muscle trachealis maintain patency
What are the parts of the thyroid mem
SUPEIROR horn of the thyroid Cart
Laryngeal prominence
Inferior horn of thyroid cart
What does the cricoid cartilage consist of
Arch
Lamina
What kind of joint is the Cricothyroid joint
Synovial
What does the Cricothyroid joint allow
A-P movement of the head allowing nodding
What a re the processes of the arytenoid cartilages
Corniculate
Muscular
Vocal
What are the vocal cords
Thickened ligaments between thyroid cart and vocal processes of arytenoid carts
Where are the cuneiform and corniculate ligaments located
Deep to laryngeal muscle
What do the corniculate and cuneiform cartilages do
Support laryngeal inlet not part in moving vocal cords
What si the rims glottidus
Space between vocal cords where air passes
What si the vocal cord
Vocal ligament covered in mucosa vocal fold
How many carts
9
What are the pairs of cart
3 pairs
Corniculate
Cuneiform
Arytenoids
What a re the single carts
3
Epiglottis
Thyroid
Cricoid
What is an endotracheal intubation
Placing a breathing tube inside the trachea
What si the endotracheal tube inserted through
Mouth or nasal cav
Oropharynx
Laryngeal inlet
Rima glottidus
Trachea
What si the endotracheal tube not inserted into
Main bronchi as May inflate only one lung and the other will collapse
What is a laryngoscopy
Viewing inside the larynx with a laryngoscope
How do u carry out a largngoscopy
Blade inserted in valeculla,a between tongue and epiglottis
What kind of mucosa is in the larynx
Respiratory epithelium
What kind of epithelia are the vocal cords
Stratified squamous epi
Since the epi of the larynx is RESP what does this mean
Sec mucous
Cilia waft to pharynx
Mucociliary escalator
What divides the laryngeal mucosa
Vocal cords
What are false vocal cords called
Vestibular folds
Where are the false vocal cords and what do they do
Superior to true
Thickened folds to protect airway
What are the true vocal cords called when covered in mucosa
Vocal fold
What nerve innervates the laryngeal mucosa
Vagus
What parts of the vagus innervate what part of the larynx
Superior to vocal fold - internal laryngeal branches of superior laryngeal branch of vagus
Inferior I to vocal fold and vocal fold - recurrent laryngeal branches of vagus
What does the recurrent laryngeal nerve loop
Under and back up at aorta arch
What are some details about the intrinsic muscles of the larynx
All skeletal muscle
All voluntary
Move vocal cords - tensors, extensirs, adductors, abductors
All supplied with motor branches of vagus
What do the crucothyroid mucles do
Tense vocal cords
Nodding at joints
What are the thyroartyeinid carts
Relax vocal cords
Pull arytenoids to thyroid
What do the lateral crico arytenoid carts do
Adduct vocal cords
Rotate arytenoid cart So that the vocal processes if carts come together midline
What do the arytenoid muscles do
Traverse and oblique
Assist lat crico to gently close rima glottidus
Sphincter function
Crico thyroid also contracts
What does the post crico arytenoid do
Adduct vocal cords
Rotate arytenoid carts so vocal processes carts move
Winded rima glottidus
What does the pretracheal fascia enclose
Strap muscles Thyroid gland Trachea Larynx Oes Pharynx Recurrent largest nerves
