LO6: Lymph Nodes of the Head and Neck

What do lymph nodes do

filter toxic products from the lymph to prevent their entry into the vascular system

what is the structure of lymph nodes

capsule, trabecula, cortex, depp cortex, medulla

what does the capsule of the lymph node contain

connective tissue and collagen fibers

what does the trabecula of a lymph node do

divides nodes into lobules

what does the cortex of the of a lymph node contain

contains B cells, and developing B cells

what does the deep cortex of a lymph node contain

T cells transiting between lymph nodes, lymph, and blood

what does the medulla of a lymph node contain

plasma cells, macrophages, and B cells

what part of the lymph node does the lymph drain into a single efferent vessel

hilus

what are the superficial nodes

occipital, retroauricular, anterior auricular, superficial parotid, and facial

what are the subgroups of the facial nodes

infraorbital, nasolabial, buccal, and mandibular

what are the deep nodes

deep parotid and retropharyngeal

what does the occipital node drain

the occipital portion of the scalp

what does the occipital node empty into

inferior deep cervical nodes of the neck

how many occipital nodes are there

between one and three

how many retroauricular nodes are there

between one and three

where does the retrocuricular node drain into

external ear, lacrimal gland, and adjacent regions of the scalp and face

where does the retroauricular node empty into

superior deep cervical lymph nodes

how many anterior auricular nodes are there

between one and three

how many superficial parotid nodes are there

up to 10

where do the anterior auricular and superficial parotid nodes drain into

external ear, lacrimal gland, and adjacent regions of the scalp and face

where do the anterior auricular and superficial parotid nodes empty into

superior deep cervical lymph nodes

where does the facial nodes drain into

the skin and mucous membranes of where the nodes are located

where do the facial nodes empty into

from one to another from superior to inferior, finally draining into the submandibular nodes

what are the nodes that cannot be palpated in an extraoral exam

deep parotid and retropharyngeal nodes

where do the deep lymph nodes drain into

deep cervical lymph nodes of the neck

how many deep parotid lymph nodes are there

up to 10

what drains into the deep parotid lymph node

middle ear, auditory tube, and parotid salivary gland

where does the deep parotid lymph node drain into

superior deep cervical lymph node

how many retropharyngeal lymph nodes are there

up to three

what drains into the retropharyngeal lymph nodes

pharynx, palate, paranasal sinuses, and nasal cavity

what does the retropharyngeal lymph node drain into

superior deep cervical lympj nodes

what are the cervical lymph nodes

superficial and deep cervical nodes

what are the superficial cervical lymph nodes

submental, submandibular, external jugular, and anterior jugular

what are the deep cervical lymph nodes

superior deep and inferior deep

what is the most prominent superior deep cervical lymph node

jugulodigastric node

what is the most prominent inferior deep cervical lymph node

juguloomohyoid

how many submental lymph nodes are there

two or three

what drains into the submental lymph nodes

both sides of chin, floor of mouth, apex of tongue, mandibular incisors

what does the submental lymph node drain into

submandibular nodes or into the deep cervical node

how many submandibular lymph nodes are there

between three and six

what drains into the submandibular lymph nodes

cheeks, upper lip, body of tongue, anterior hard palate, and most teeth

what do the submandibular lymph nodes drain into

superior deep cervical nodes

what is the submandibular lymoh node a secondary node for

submental and facial regions

what is the external jugular lymph node a secondary node for

occipital, retroauricular, anterior auricular and superior parotid nodes

what does the external jugular lymph node empty into

superior or inferior deep cervical nodes

what drains into the anterior jugular lymph node

infrahyoid region

what does the anterior jugular lymph node empty into

inferior deep cervical nodes

how many cervical deep lymph nodes are there

15-30

what is the superior deep cervical lymph node a primary node for draining

posterior nasal cavity, posterior hard palate, soft palate, base of tongue, max third molars, esophagus, trachea, thyroid gland

what is the inferior deep cervical lymph node a primary node for

posterior portion of the scalp and neck, superficial pectoral, and portion of the arm

what drains into the juguloomohyoid lymph node

tongue and submental region

what is the inferior deep cervical lymph node a secondary node for

occipital, superficial nodes of the head, and superior deep cervical nodes

what is the primary node for the anterior hard palate

submandibular and retropharyngeal lymph nodes

what is the secondary node for the anterior hard palate

superior deep cervical

what is the primary node for the posterior hard palate

superior deep cervical and retropharyngeal lymph node

what is the secondary node for the posterior hard palate

inferior deep cervical lymph nodes

what is the primary node for the soft palate

superior deep cervical and retropharyngeal lymph node

what is the secondary node for the soft palate

inferior deep cervical lymph nodes

what is the primary node for the maxillary anterior teeth

submandibular lymph nodes

what is the secondary node for the maxillary anterior teeth

superior deep cervical lymph node

what is the primary node for the maxillary premolars and 1st and 2nd molars

submandibular lymph nodes

what is the secondary node for the maxillary premolars and 1st and 2nd molars

superior deep cervical lymph nodes

what is the primary node for the mandibular incisors

submental lymph node

what is the secondary node for the mandibular incisors

submandibular and deep cervical lymph nodes

what is the primary node for the floor of the mouth

submental lymph node

what is the secondary node for the floor of the mouth

submandibular and deep cervical

what is the primary node for the apex of the tongue

submental lymph node

what is the secondary node for the apex of the tongue

submandibular and deep cervical

what is the primary node for the body of the tongue

submandibular lymph node

what is the secondary node for the body of the tongue

superior deep cervical node

what is the primary node for the base of the tongue

superior deep cervical

what is the secondary node for the base of the tongue

inferior deep cervical node

what is the primary node for the pharyngeal

superior deep cervical node

what is the secondary node for the pharyngeal

inferior deep cervical node

what is the primary node for the palatine and lingual

superior deep cervical node

what is the secondary node for the palatine and lingual

inferior deep cervical node

what is the primary node for the parotid salivary gland

deep parotid lymph node

what is the secondary node for the parotid salivary gland

superior deep cervical node

what is the primary node for the sublingual salivary gland

submandibular lymph node

what is the secondary node for the sublingual salivary gland

superior deep cervical node

what is the primary node for the submandibular salivary gland

submandibular lymoh node

what is the secondary node for the submandibular salivary gland

superior deep cervical

what is the primary node for the buccal muscosa

facial and mandibular lymph nodes

what is the secondary node for the buccal mucosa

submandibular lymph node

what is the primary node for the scalp

retroauricular, anterior auricular, superficial parotid, occiptal, and accessory lymph node

what is the secondary node for the scalp

inferior deep cervical and supraclavicular lymph nodes

what is the primary node for the lacrimal gland

superficial parotid gland

what is the secondary node for the lacrimal gland

superior deep cervical node

what is the primary node for the external ear

anterior auricular, retroauricualr, and superficial parotid nodes

what is the secondary node for the external ear

superior deep cervical nodes

what is the primary node for the middle ear

deep parotid lymph node

what is the secondary node for the middle ear

superior deep cervical node

what is the primary node for the pharynx

retropharyngeal lymph node

what is the secondary node for the pharynx

superior deep cervical node

what is the primary node for the esophagus

superior deep cervical node

what is the secondary node for the esophagus

inferior deep cervical node

what is the primary node for the thyoid gland

superior deep cervical node

what is the secondary node for the thyoid gland

inferior deep cervical noce

what are the nodes of the head

infraorbital, nasolabial, buccal, mandibular, occiptal, retroaurcular, superficial parotid, anterior auricular

what are the cervial nodes

submental, submandibular, external jugular, anterior jugular,