Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Pharynx

TermDefinition
Pharynx sections Nasopharynx (post nasal cavity), oropharynx (post oral cavity), laryngopharynx (post larynx) -> oesophagus
Pharynx location Base of skull -> lower border of cricoid cartilage
Outer layer of pharyngeal muscles, innervation, function Superior/middle/inferior constrictors -> CN X -> circular muscles -> pharyngeal constriction to aid swallowing
Superior constrictor attachments Outer pharyngeal muscle -> pterygomandibular raphe (ligament) -> pharyngeal raphe
Middle constrictor attachments Outer pharyngeal muscle -> stylohyoid ligament -> pharyngeal raphe
Inferior constrictor attachments Outer pharyngeal muscle -> thyroid/cricoid cartilages -> pharyngeal raphe -> constriction as upper oesophageal sphincter
Inner layer of pharyngeal muscles, function Stylopharyngeus, palatopharyngeus, salpingopharyngeus -> longitudinal muscles -> elevate pharynx/larynx when swallowing
Inner pharyngeal muscle innervation CN X xcp stylopharyngeus (branchiomotor -> IX)
Stylopharyngeus attachments Inner pharyngeal muscle -> styloid process -> pharyngeal wall
Palatopharyngeus attachments Inner pharyngeal muscle -> palatine aponeurosis (hard palate) -> pharyngeal wall
Salpingopharyngeus attachments Inner pharyngeal muscle -> medial cartilaginous Eustachian tube -> pharyngeal wall
Pharyngeal plexus CN IX pharyngeal branch (stylopharyngeus), CN X pharyngeal branch, CN X superior laryngeal nerve external laryngeal branch, CN XI (cranial root gives some motor fibres to CN X), convey parasympathetic preganglionic fibres for pharyngeal glands
CN IX pharyngeal branch course Passes through oropharyngeal triangle -> inferior to palatine tonsil -> afferent limb of gag reflex
Oropharyngeal triangle borders Superior = inferior border of superior constrictor, anterior = posterior border of mylohyoid, posterior = anterior border of middle constrictor
Oropharyngeal triangle contents Hyoglossus/styloglossus muscles, lingual artery/vein, CN IX pharyngeal branch/XII, submandibular gland
Nasopharynx sensory innervation Maxillary nerve CN Vb -> passes through sphenoid palatovaginal canal
Oropharynx sensory innervation CN IX
Laryngopharynx sensory innervation CN X
Waldeyer’s ring 4 groups of 6 specialised lymphatic tissue at entrance of digestive/respiratory tract -> 1 adenoid/nasopharyngeal, 2 tubal tonsils, 2 palatine tonsils, 1 lingual tonsil
Adenoid tonsil Unpaired -> roof of nasopharyngeal cavity posterior to choanae -> enlargement will obstruct children nasopharynx
Tubal tonsil Paired -> medial to Eustachian tube opening -> removed in persistent tonsilitis -> enlargement will obstruct Eustachian tube and lead to middle ear secretion accumulation
Palatine tonsil Paired -> btwn palatoglossal (ant)/palatopharyngeal (post) arches -> largest tonsils -> in tonsilectomy, facial artery/ECA/CN IX endangered
Lingual tonsil Unpaired -> post 1/3 of dorsal tongue -> inflammation will lead to painful swelling
Created by: vykleung
Popular Anatomy sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards