Transcript 2、what is the composition of pharyngeal lymphatic ring

Applied anatomy of
pharynx
Wang Peihua
Department of Otorhinolaryngology,
9th people’s hospital, School of medicine,
Shanghai Jiaotong University
Circumscription of pharynx

Pharynx is the junction between respiratory
tract and alimentary tract.
Circumscription of pharynx

Superior: base of skull

Inferior: inferior border of C6

Anterior: Connect to nose, mouth and larynx

Posterior: Prevertebral fascia
Subsection of pharynx


(1) nasopharynx：
skull base
free edge of soft palate
(2) oropharynx：
free edge of soft palate
superior border of epiglottis
 (3) laryngopharynx：
superior border of epiglottis
inferior border of cricoid cartilage
Nasopharynx(Epipharynx)

a adenoid

b pharyngeal opening
of auditory tube

c torus tubalis

d pharyngeal recess

e tubal tonsils
Oropharynx(Mesopharynx)

a
fauces

b glossopalatine arch

c pharyngopalatine arch

d tonsilla palatina

e lateral pharyngeal bands

f pharyngeal posterior wall
Laryngopharynx （Hypopharynx）




a
b
c
d
atrium of larynx
vallecula epiglottica
pyriform sinus
postcricoid space
Structure of pharyngeal wall
（一）layer of pharyngeal wall
1. mucous layer
2. fibrous layer
3. muscle layer：
①pharyngeal constrictor
②pharyngeal elevator
muscle group
③palatine velum muscle
group
4. Mantle layer
（二）interfascial space
1. retropharyngeal space
2. parapharyngeal space
Pharyngeal lymph tissue

Pharyngeal lymphatic ring(waldeyer
lymphatic ring)
Waldeyer
lymphatic ring
inner ring
outer ring
Structure of pharyngeal lymphatic ring
Pharyngeal submucous
lymph tissue
Lymph node of neck
（outer ring）
(inner ring)
•adenoid tonsil
retropharyngeal lymph
nodes
•tubal tonsils
•tonsilla palatina
•lateral pharyngeal bands
•folliculus lymphaticus of
pharyngeal posterior wall
•lingual tonsil
drain to
lymph nodes of
mandibular angle
submandibular lymph
nodes
submental lymph nodes
Tonsilla palatina
(1) anatomy feature
a、location
b、appearance
c、construction features
Tonsilla palatina
(2) blood vessel：①descending palatine artery
②ascending palatine artery
③tonsillar artery
④tonsillar branch of ascending
pharyngeal artery
⑤dorsal artery of tongue
(3) nerves： ① pharyngeal plexus
② superior maxillary nerve (Ⅴ2)
③ branches glossopharyngeal nerve.
Pharyngeal blood vessels and nerves

arteries

veins

nerves
1、 how many sections has the pharynx
been divided into? What are those
anatomy defining points ?
 2、what is the composition of
pharyngeal lymphatic ring (waldeyer
lymphatic ring)?
 3、what is the blood apply of tonsilla
palatina?
