Lymphatic System Flashcards
What does the lymphatic system consist of?
Lymph fluid and ducts lymph nodes spleen thymus tonsil and adenoids peyer patches
Lymph tissue located in where?
Stomach, appendix, bone marrow and lungs
Except for placenta and CNS
Fxn of immune system
protects body from antigens
Removes damaged cells
Partial barrier to malignant cells
Immunocompetence can lead to
Allergies
Immunodeficiencies
Autoimmune disorder
`Metabolic processes of immune system
movement in a closed circuit produce lymphocytes production of antibodies phagocytosis absorption of fat and fat-soluble substances manufacture of blood
Composition of lymph
Clear fluid
WBCs
RBCs
Proteins
Drainage of lymph
Moves from blood to interstitial spaces Collected by ducts Carried to nodes Moves to venous Closed but porous circulation
Lymph nodes
Receive lymph from ducts
Surrounded by capsules of connective tissue and fibrils
Located superficially and deep
Lymphocytes
Respond to antigens
B-lymphocytes produce antibodies
T-lymphocytes control immune response of B-lymph
Humoral and Cellular immunity
Increased presence of lymphocytes indicated infection
Thymus
Extends upward into lower neck
Primary fxn during childhood
T-cell production
Spleen
Blood-forming organ
red corpuscle storage
contain blood-filtering macrophages
immune response usually originates here
Tonsils and Adenoids
Palatine - tonsils
Pharyngeal - adenoids
Lingual - base of tongue
Responds to inhaled or intranasal antigens
Peyer Patches
Lymph tissue in small intestine
HPI: enlarged nodes
character associated local associated systemic predisposing factors medications
HPI: Swelling of extremity
unilateral or bilateral, intermittent, duration
predisposing
associated
efforts at treatment
