Lymphatic System Flashcards
Semi-independent parts of lymphatic system
Lymphatic vessels
Lymphoid tissues and organs
The lymphoid tissues and organs houses the;
Phagocytic cells
Lymphocytes
The 2 large ducts in the thoracic region
Right lymphatic duct
Large thoracic duct
Special structural features of the lymphatic capillaries
Tissue cell
Lymphatic capillary
Blood capillaries
Arteriole
Venule
Regional lymph nodes
Cervical nodes
Axillary nodes
Inguinal nodes
Structure of lymph node
Capsule
Cortex
Follicle
Medullary sinus
Medullary cord
Hilum
Other lymphoid organs
Tonsil
Spleen
Thymus
Peyer’s patches
Appendix
Function of lymphatic system
Maintenance of fluid balance
Lipid absorption
Defense
4 sets of lymph trunks (paired) & 1 unpaired trunk
(Paired)
* Jagular lymph trunks (right & left)
* Subclavian lymph trunks (right & left)
* Bronchomediastinal lymph trunks
* Lumbar lymph trunks (right & left)
(Unpaired)
*intestinal lymph trunk
Parts of spleen
White pulp
Red pulp
Hormones produced in thymus
Thymopoietin
Thymosin & thymulin
Thymic humoral factor
They are part of the collection of lymphoid tissue ( MALT )
Peyer’s patches
Appendix
Tonsil
Makes up the immune system
Innate defense mechanism
Adaptive defense mechanism
Most important defense system
Lymphocytes
Dendritic cells
Macrophages
Body’s first line defense
Skim
Mucous membranes
Protective secretions produced by mucous membranes
Acid mantle
Sticky mucus
Stomach mucosa
Saliva & tears
The body’s second line of defense
Cells (phagocytes & natural killer cells)
Chemicals
Lytic chemicals produced by natural killer cells
Perforin
Granzymes
2 important antimicrobial proteins
Complement
Interferon
three important aspects of adaptive defense
Antigen specific
It is systemic
It has a memory
two separate but overlapping arms of the adaptive defense system
Humoral immunity
Cellular immunity
crucial cells of the adaptive system
Lymphocytes
Antigen-presenting cells (APCs)
2 other major flavors of lymphocytes or 2 of its main types
B cells
T cells
Major types of cells in APCs
Dendritic cells
Macrophages
B lymphocytes
