Lymphatic System Question s Flashcards
Unit 1 A&P
Is the lymphatic system an open or closed system?
Closed
Are lymphatic capillaries more or less permeable than blood capillaries?
More, meaning material passes through evenly
How many liters of lymph flow through the lymphatic system each day?
2-3 liters
Which lymphatic structure drains lymph from the right side of the body
The right lymphatic duct
What does the right lymphatic duct drain?
R head and neck
R upper limb
R thorax
R upper quadrant
Which lymphatic structure drains lymph from the left side of the body?
Thoracic Duct
What does the thoracic duct drain?
L head and neck
L upper limb
L thorax
Abdomen and lower limbs
What causes lymph to flow?
It is from the periphery to the central vasculature
List the steps of lymph flow.
- interstitial fluid
- lymphatic capillaries
- travels in lymphatic vessels to regional lymph nodes
- lymph goes up or down to the thorax/ to the left or right ducts
- lymps final destination is through subclavian veins
Do lymphatic vessels contain
valves? Why?
yes, to make sure lymph flows one way
In which direction does lymph flow, towards or away from the heart
Flows to the central vasculature, towards the heart
Name the type of connective tissue found in lymphatic tissue
Aereoloar connective tissue
Name the lymphatic organs
Bones Marrow
thymus
Spleen
Lymph nodes
Tonsils
MALT( mucosa-associated lymph tissue)
What is the largest lymphatic organ
Spleen
Name the lymphatic organs that are associated with lymphatic vessels
lymph nodes, spleen, bone marrow
What is the only lymphatic organ that does not directly fight antigens and functions in T lymphocyte maturation?
Thymus
Which cells in the lymphatic system phagocytize foreign substances?
Macrophages
Red Bone marrow function
Site of B lymphocytes
Thymus function
maturation of T lymphocytes
Lymph nodes function
Filters lymph and where immune response starts
Spleen Function
Filters blood
immune response starts when a substance is in the blood
Removes RBC and WBC
Tonsils Function
Protection from inhaled and ingested substances
Lymph Nodes Function
protects organs from foreign substances
Mucosa-associated lymph tissue function
protects mucous membranes from foreign substances
What are the locations in a lymph node?
Neck
armpits
chest
abdomen
groin
What is the function of light staining centers in lymphoid follicle?
What is the relationship between the number of afferent and efferent lymphatic vessels that enter and leave a lymph node?
There are 4 different vessels and 2 efferent vesicles at the end
what are the steps of lymph moving through the afferent lymphatic vesicle to the efferent lymphatic vessel?
- afferent vessicle
- subscapular sinus
- medulla sinus
- drains from efferent
exits from hilus in lymph node
When is the thymus most active?
Childhood until puberty
What affect does age have on the thymus?
declines in function
Names of tonsils and where they are located
palatine- pharynx, the rear end of the throat
Pharyngeal- nasopharynx
Lingual- lamina propria, root of tounge
Which tonsil is not paired?
pharyngeal
What happens to the flow of lymph when the lymphatics are blocked?
causes a build-up of fluids, lymphodema(swelling)
What is bubo?
Swollen lymph in armpit or groin
What do swollen lymph nodes indicate?
Infection
Define passive immunity (naturally acquired and artificially acquired)
transfer antibodies from one person to another
Define active immunity (naturally acquired and artificially acquired).
exposure to disease triggers immune system to make antibodies
