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42 Cards in this Set

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What area of the body is devoid of lymphatics?
CNS
Which areas of the body have dense lymphatic networks?
Dermis, mucous membranes
What are the 4 main parts of the lymphatic system?
1. Lymph
2. Lymphatic vessels
3. Lymphoid tissues & organs
4. Cells of immune system
What is the primary function of the lymphatic system?
Production, maintenance & distrubution of lymphocytes to detect problems, reach site of injury/infection
What are other functions of the lymphatic system? (2)
1. remove excess fluids from body tissues
3. Absorb FA & transport of fat, chyle to circulatory system
When does tissue fluid become lymph?
Once it has entered lymphatic capillary
How is lymph fluid formed?
-Fluid leaks from blood capillaries into interstitial spaces to supply cells w/ nutrients
-Excess fluid not reabsorbed by venous capillaries enter lymph capillaries by increased interstitial pressure (hydrostatic pressure of tissue fluid)
What percent of interstitial fluid returns to venous capillaries?
90% due to hydrostatic pressure of interestitial fluid & oncotic pressure inisde capillaries
10% of interestitial fluid returns to circulatory system via lymphatics due to?
Osmotic pressure exerted by proteins in blood plasma
Do lymph vessels contain valves?
yes
Lymph vessels converge to form?
Lymphatic trunks
Lymphatic trunks converge to form?
lymphatic ducts
Intestinal lymph trunk receives lymph from?
Stomach, intestines, pancreas, spleen, lower part of liver
Bronchomediastinal trunk receives lymph from?
Viscera of thorax
Subclavian trunks receive lymph from?
Upper liimbs
Jugular trunks receive lymph from?
Head & neck
Right lymphatic duct receives lymph from? (3)
1. Right upper limb
2. Right side of thorax
3. Right head & neck
Thoracic duct receives lymph from? (4)
1. Any area below diaphragm
2. Left half of thorax
3. Left head & neck
4. left upper limb
The right lymphatic duct enters which vein?
Right subclavian
The thoracic duct enters which vein?
Left subclavian
What receives all lymphatic trunks below diaphragm & is the origin of the thoracic duct?
Cisterna chyli
What are the superficial lymph nodes of the head? (5)
1. Occipital
2. Retroauricular
3. Preauricular
4. Superficial parotid
5. Facial
What are the deep lymph nodes of the head? (2)
1. Deep parotid
2. Retropharyngeal
What are the superficial lymph nodes of the neck? (4)
1. Submental
2. Submandibular
3. External jugular
4. Anterior jugular
What are the deep lymph nodes of the neck? (2)
1. Superior
2. Inferior
All superficial lymph nodes of head drain to superior deep cervical nodes EXCEPT which 2?
1. Facial --> submandibular -> superior deep

2. Occiptal --> inferior deep
Which tissue does occipital node receive?
Scalp
Which tissues does retroauricular node drain? (2)
1. Scalp
2. External ear
What tissue does anterior auricular node drain? (2)
1. Scalp
2. External ear
What tissues does the superficial parotid node drain? (4)
1. Scalp
2. Parotid (superficial)
3. Lacrimal gland
4. External ear
What tissues does the facial node drain? (3)
1. Infraorbital region
2. Nasal cavity
3. Cheek
What tissues drain to deep parotid node? (2)
1. Parotid gland (majority)
2. Middle ear
What tissues drain to retropharyngeal node? (4)
1. Pharynx
2. Palate
3. Paranasal sinus & nasal cavity
4. Infraortbital region
What tissues drain to submental nodes? (5)
1. Both sides of chin
2. Tip of tongue
3. Lower lip
4. Floor of mouth
5. Mandibular incisors
What tissues drain to submandibular nodes? (5)
1. Cheeks
2. Upper lip
3. Tongue
4. Anterior hard palate
5. All teeth except mand incisors & max 3rd molars
External jugular nodes are secondary to which nodes? (4)
1. Occipital
2. Postauricular
3. Preauricular
4. Superficial parotid
Anterior jugular nodes drain which region?
Infrahyoid region
Which superficial cervical nodes drain to superior deep cervical nodes? (4)
1. Submental nodes
2. Submandibular nodes
3. External jugular
4. Anterior jugular
Which superficial cervical nodes drain to inferior deep cervical nodes? (3)
1. Anterior jugular nodes
2. External jugular nodes
3. Superior cervical deep nodes
Vestibular gingiva drains to which nodes?
Submandibular nodes
Mandibular lingual gingiva & mucosa of floor of mouth drain to which nodes?
Submandibular nodes or directy to deep cervical nodes
Palatal gingiva & mucosa drain to which nodes?
Submandibular &/or retropharyngeal nodes