lymphatic system vs lymphoid system
MA and FMA distinguish between lymphatic and lymphoid systems.
(FMA explicitly has a class "non-lymphatic lymphoid system", which MA does not).
Neither have definitions.
Definitions or at least disambiguating systems would be useful here,
as the majority of sources use these terms loosely and interchangeably
(Britanica even includes bone marrow as part of the lymphatic system!)
MA
organ system
(i) cardiovascular system
(p) vascular system
(p) lymphatic system
(i) hemolymphoid system
(p) hemolymphoid system gland
(i) spleen
(i) thymus
(p) lymphoid system
(p) lymph node
(p) lymph organ
(p) lymphatic system
(p) lymphoid tissue
(p) mucosa associated …
(p) oropharyngeal …
(i) tonsil
FMA
Anatomical structure
(i) Organ system
(i) Cardiovascular system
(p) Lymphatic system*
(i) Organ
(i) Hollow tree organ
(i) Vascular tree
(i) Lymphatic tree organ
(i) Right lymphatic duct tree
(i) Thoracic duct tree
(p) Lymph node group
(i) Cardinal organ part
(i) Organ component
(i) Organ component of lymphatic tree organ
(i) Lymph node
(i) Anatomical cluster
(i) Heterogeous anatomic cluster
(i) Hemolymphoid system
(p) Lymphoid system
Anatomical set
(i) Set of organ parts
(i) Set of organ components
(i) Lymph node group
(i) Subdivision of hemolymphoid system
(i) Lymphoid system
(i) Set of heterogeneous clusters
(i) Hematopoietic system
(p) Lymphoid system
(p) Lymphatic system*
(member of) Right lymphatic duct tree
(member of) Thoracic duct tree
(i) Lymphoid system
(i) Segment of lymphoid system
(i) Lymphatic system*
(i) Subdivision of lymphatic system
*def: “Segment of lymphoid system which has as its direct
parts right lymphatic tree organ and thoracic duct tree.”
A reasonable assumption is that the lymphatic system is the cardiovascular component of the lymphoid system,
including lymphatic vessels but excluding lymphoid tissue such as tonsils. MA and FMA are consistent here …
ignore the FMA "set of X" terms and the fact that the FMA class lymphoid tissue isn't considered part of *any* system
MA includes lymph node in lymphatic system – In the MA, lymph node is part of lymphoid system and vascular system
FMA has lymph node as outside of the lymphatic system, but in the lymphoid system … part of the lymphatic system
– In the FMA, “lymph node is an “organ component of the lymphatic tree organ,”
while “lymph node group” is “set of organ components” that is part of the “lymphatic tree organ”
MA and FMA could be considered consistent here
FMA relationships are: LN constitutional part of lymphatic tree organ system [and/which is] part of lymphatic system [?]
note:
FMA mixed hierarchy shown above may be incomplete.