The lymphatic system Flashcards
The lymphatic system consists of several structures and organs that contain…
lymphatic tissue, bone marrow, and a fluid called lymph that flows within lymphatic vessels
The body system that carries out immune responses is the
lymphatic system
What is nonspecific resistance (innate immunity)
- Present at birth
-Includes defense mechanisms that provide general protection against inavsion by a wide range of pathogens
What is immunity (adaptive immunity)?
Involves activation of specific lymphocytes that combat a particular pathogen or other foreign substance
Lymphatic vessels begin as ____, which are ____
- lymphatic capillaries
-closed on one end
Lymphatic capillaries are located between
cells of many tissues
lymphatic capillaries merge to form lymphatic vessels, which have
thina walls and many valves
The lymphatic vessels return
the lymph to the venous system
via two main channels:
Right lymphatic duct and thoracic duct
The lymphatic vessels return
the lymph to the venous system
via two main channels:
Right lymphatic duct and thoracic duct
Right lymphatic duct drains into the
right thorax, upper limb, head
and neck
The thoracic duct drains
all lymph from the lower half of the body.
The thoracic duct drains
all lymph from the lower half of the body.
What is the formation and flow of lymph? (7 steps)
Interstitial fluid—->lymphatic capillaries—->afferent lymph vessels—>lymph nodes—.efferent lymphatic vessels—.lymph ducts—-.subclavian veins
Primary lymphatic organs are where immune cells become
immunocompetent
Primary lymphatic organs are
- Red bone marrow
-Thymus
