Lab 49 Flashcards
Lymph finally flows into lymphatic _______ just before connecting to a blood vessel.
collecting ducts
The right lymphatic duct drains only the ______ quadrant of the entire body.
Right upper
Which of the following areas would contain the fewest lymph nodes?
Plantar
A __________ is the largest lymphatic organ.
Spleen
The thoracic duct drains into the
Left internal jugular vein
T/F
Lymph flows faster during periods of exercise
True
T/F
The thymus continues to enlarge as a person ages.
T
T/F
Lymphatic capillaries and blood capillaries are open at both ends.
False
closely associated with the cardiovascular system & includes a network of vessels that assist in the circulation of body fluids
Lymphamatic system
fluid in the lymphatic vessels
Lymph
fluid accumulating in tissue spaces
Edema
microscopic, blind-ended vessels in which excess interstitial fluid first enters the lymphatic system
Lymphatic capillaries
How do capillaries drain
lymphatic collecting vessels–>larger lymphatic trunks–>collecting ducts–>subclavian veins
provides drainage for the entire body except for the right upper quadrant
Thoracic duct
thoracic duct connects to
the left subclavian duct
right lymphatic duct drains
only the right upper quadrant into the R subclavian vein
lymph nodes are majorly in 2 regions, they are
Axillary inguinal
lymph nodes contain
concentrations of lymphocytes & macrophagesthat cleanse the lymph & activate an immune response
major production site of white blood cells
Red bone marrow
location of T lymphocyte maturation
Thymus
largest lymphatic organ
contains large numbers of red blood cells, lymphocytes, & macrophages
Spleen
collect lymph from microscopic lymphatic capillaries
Lymphatic collecting vessels
bean shaped organs that cleanse lymph & activate immue response
Lymph nodes
collect lymph from lymphatic collecting vessels
Lymphatic trunk
inferior expanded sax of thoracic duct where fatty intestinal lymph collects
cisterna chyli
receive lymph from collecting ducts
Subclavian veins
Lymphatic pathways begin as Lymphatic ___ that merge to form lymphatic collecting vessels
Capillaries
Lymph drainage from collecting ducts enters the ___ veins.
Subclavial
Once tissue (interstitial) fluid is inside the lymph capillary, the fluid is called
Lymph
Lymphatic vessels contain ___ that help prevent back flow of lymph
Valves
lymphatic vessels usually lead to lymph ___ that filter the fluid being transported
Nodes
The ____ is larger & longer of the 2 lymphatic collecting ducts
Thoracic lymphatic duct
Lymph nodes contain large numbers of white blood cells called ____ & macrophages that fight invading organisms
Lymphocytes
The indented region where blood vessels and nerves join a lymph node is called the ____
Hilum
Lymph ___ that contain germinal centers are the structured units of a lymph node
Nodules
The spaces within a lymph node are called lymph ___ through which lymph circulates
Sinuses
Lymph enters a node through a(n) ___ lymphatic vessel
Afferent
The lymph nodes associated with the lymphatic vessels that drain the lower limbs are located in the ___ region
Inguinal region
The thymus is located in the ___, anterior to the aortic arch.
Mediastinum
The ___ is very large in a child & will atrophy in advanced age.
Thymus
The _____ is the largest of the lymphatic organs.
Spleen
A ______ of connective tissue surrounds the spleen
Capsule
The tiny islands (nodules) of tissue within the spleen that contain many lymphocytes comprise the _____ pulp.
White
The ____ pulp of the spleen contains large numbers of RBC’s, lymphocytes, and macrophages.
Red
________ within the spleen engulf and destroy foreign particles and cellular debris.
Macrophages
The lymphoid organs in the pharynx (throat) that often are infection sites in children are collectively called ______.
Tonsils
