Lymphatic drainage of head and neck Flashcards
all the lymph from the region of the head and neck drains into what
deep cervical lymph nodes
efferents from the deep cervical lymph nodes form what
jugular trunk
on the right side the jugular trunk drains into what
the right lymphatic duct
on the left side the jugular trunk drains into what
thoracic duct
out of the 400-450n lymph nodes in the human body how many are located in the head and neck region
60-70 nodes
lymph nodes in the head and neck region can be grouped into what
superficial nodes
deep nodes
whats the lymphatic drainage of the superficial tissues of the head and neck
lymph can go from superficial tissues to regional lymph nodes then deep cervical nodes
or
lymph goes from superficial tissues to deep cervical nodes
where do superficial lymph nodes lie
above investing layer of the deep cervical fascia
superficial lymph nodes consist of a few small nodes lying superficial to what
external jugular and internal jugular veins
superficial lymph nodes include
1.submental nodes
2. submandibular nodes
3. buccal nodes
4. parotid nodes
-5. mastoid (postauricular/ retroauricular) nodes
6. occipital nodes
7. superficial cervical nodes
where are the submental nodes located
submental triangle
how many are the submental nodes
3/4
where are the submental nodes located
on mylohyoid muscles between the anterior bellies of both digastric muscles
submental nodes get afferents from what
tip of tongue
floor of mouth
lower gums opposite the incisor teeth
central part of lower lip
submental nodes efferents drain into what
submandibular nodes
jugulo-omohyoid nodes
where are the submandibular nodes located
in digastric triangle beneath the deep cervical fascia in contact with the submandibular salivary gland
how many submandibular nodes are there
3
the submandibular nodes get afferents from what
- center of forehead
- medial angle of eye
- side of nose
- cheek and angle of mouth
- whole of upper lip
- lateral part of lower lip
- anterior 2/3 of tongue
- upper gums
- lower gums
- frontal, maxillary and most ethmoidal sinuses
- submental lymph nodes
submandibular nodes efferents drain into what
jugulo-omohyoid
partly jugulo-digastric nodes
where do the buccal nodes lie
buccinator muscle
buccal nodes get afferents from what
part of the cheek
lower eyelid
buccal nodes efferents drain into what
upper deep cervical nodes
where are the parotid nodes lie
superficial and deep to the fascial capsule of the parotid glad and within its substance
parotid gland is divided into what 2 groups
superficial group
deep group
the superficial group of the parotid nodes receive afferents from what
upper part of forehead
temporal region
upper part of lateral surface of auricle
anterior wall of external acoustic meatus
eyelids
the deep group of the parotid nodes receives afferents from what
nasopharynx
posterior part of nose
tympanic cavity
parotid nodes efferents drain into what
upper deep cervical nodes
where are the mastoid nodes located
superficial to the sternocleidomastoid near its attachment to the mastoid process