LYMPHATIC SYSTEM Flashcards
Functions of Lymphatic System
- Returns fluid that leaked from __________ back to the blood
vascular system
Functions of Lymphatic System
- Protects the body by removing _________ from the lymph
foreign material
Functions of Lymphatic System
- Immune ________
surveillance
Lymphatic System is consists of the following semi-independent parts
- Lymphatic vessels
- Lymphatic organs
LYMPH TRUNKS
(LIBSJu)
Lumbar
Intestinal
Bronchomediastinal
Subclavian
Jugular
Drains lower extremities and pelvis.
Lumbar
Drains abdominal region.
Intestinal
Drains thorax.
Bronchomediastinal
Drains upper extremities.
Subclavian
Drains head and neck.
Jugular
Thoracic duct originates from?
Cisterna chyli
Empties into left subclavian vein as it junction with the left internal jugular vein.
Thoracic duct
Empties the right subclavian vein as it with junction with the right internal jugular vein.
Right lymphatic duct
LYMPH TRANSPORT
- Skeletal muscle contraction
- Negative pressure in the thorax
- Valves
LYMPHATIC ORGANS
- Lymphocytes Aggregates
- Loose Connective Tissue
- Epithelial Cells
Loose, dense, nodular, follicles (Lymphatic Organs)
Lymphocytes Aggregates
Reticular (Lymphatic Organs)
Loose Connective Tissue
Located along lymphatic vessels.
Lymph Nodes
Macrophages that phagocytize bacteria.
Lymph Nodes
Lymphocytes mounting immune response.
Lymph Nodes
Filters the lymphs.
Lymph Nodes
A flat, pinkish-gray, two lobed organ lying high in the chest anterior to the aorta and posterior to the sternum.
Thymus
Thymus increases its size during?
Childhood
Thymus characteristic feature?
Hassal’s / Thymic Corpuscles
In the thymus, the lymphoid tissue is ________ in nodules.
Not arranged
largest lymphatic organ
Spleen
located at the left hypochondriac region
Spleen
graveyard for senescent or aged RBC
Spleen
Spleen filters the?
Blood
produces lymphocytes and plasma cells
Spleen
Capsule and contains lymphocytes, macrophages, RBC
Structure
Contains abundant RBC and macrophages
Red pulp
Contains lymphocytes
White pulp
Several groups of tonsils forming a ring of lymphoid tissue, guard the entrance of the alimentary and respiratory tracts from invasion by microorganisms. This is called ________ ring.
Waldeyer’s ring
Components of the Waldeyer’s ring
(PLN)
- Palatine tonsils
- Nasopharyngeal tonsil
- Lingual tonsils
Develop as outpocketing of developing vein, from mesoderm.
Lymphatics
Thymus gland develop from ______?
Endoderm
The rest of the lymphoid organs develop from _______?
Mesoderm
defense of the body against disease causing agents (like transplant, transfusion, autoimmune, allergies, aids)
specific or non specific
Immunity
block the entry or spread of the disease
non specific response
very specific
tailored to individual treat
antibody mediated (B cells) and cells mediated (T cels)
specific response
Present at birth
Non specific
Does not become efficient upon the second exposure to same organism
skin, mucous membrane, phagocytes, natural killer cell, inflammatory response, interferon, complement, fever
Innate Immunity (Non Specific Immune Response)
Following certain infection
Antigen and antibody reaction
B lymphocytes humoral /antibody mediated immunity
T lymphocyte cell mediated immunity
Acquired (Adaptive/Specific Immune Response)
attacks infected cells, virus, cancer cells, foreign body
Cytotoxic T cell
terminate normal immune response
Suppressor T cell
Involved in humoral immunity
1. Primary immune response
2. Secondary immune response
B Cell
