the right lymphatic duct drains:
the upper right quadrant (head, neck, chest, and arm)
where does the right lymphatic duct join the venous system
at the junction of the right subclavian and right internal jugular veins
the duct that drains 3 quadrants of the body
left lymphatic duct (thoracic duct)
where does the left lymphatic duct join the venous system
left subclavian and internal jugular veins
defense cells (lymphocytes) proliferate in the nodes and enter lymph system
hemopoiesis
what do the submental lymph nodes drain
chin, lower lip, floor of mouth, apex of tongue, and mandibular incisors and associated periodontium
the submental nodes drain into the
submandibular or directly into deep cervical nodes
the submandibular node drains:
the cheek, upper lip, body of tongue, anterior hard palate, and teeth associated tissue (except mandibular incisors and max 3rd molars)
the submandibular nodes are secondary nodes for:
facial nodes, submental nodes, and lymph nodes of sublingual and submandibular salivary glands
what does the submandibular node drain into
superior deep cervical lymph nodes located deep in neck
the nodes are located along the external jugular vein superficial to the sternocleidomastoid (SCM) muscle
external jugular lymph nodes
this chain of nodes lie along the carotid sheath deep to the SCM muscle
deep cervical lymph nodes
these nodes are superficial to the SCM muscle at the region of the clavicle
anterior jugular lymph nodes
these nodes can be palpated by the having the patient turn their head exposing the SCM muscle
Deep cervical lymph nodes
superior deep cervical nodes are primary nodes for:
posterior nasal cavity and hard palate, soft palate, MAXILLARY 3RD MOLARS, and base of tongue
these nodes are commonly secondary nodes for most areas of head and neck
superior deep cervical nodes
these nodes are commonly enlarged with tonsillitis and sore throat
jugulodigastric lymph nodes
where are the jugulodigastric nodes located
below the angle of the mandible
which nodes supply the tonsils
juglulodigastric
masses of lymph tissue that aren’t enapsulated and don’t lie along lymphatic vessels
tonsils
which tonsil isn’t paired and is also called adenoids
pharyngeal tonsil
what drains the tonsils
superior deep cervical nodes especially jugulodigastric lymph nodes
3 ways dental infections can spread
blood stream, lymphatics, or tissue spaces
where do dental infections drain into
the pterygoid plexus
increased size and change in consistency of lymph node, due to inc number and size of lymphocytes within the node as a result of infection
lymphadenopathy
spread of cancer cells from original site to another; nodes are hard and fixed but not tender
metastasis
diffuse swelling of soft tissue spaces; present as painful firm swelling
cellulitis
Cellulitis of submandibular space due to untreated infection of mandibular teeth
Ludwig’s angina