Lymphatic System

Capillary BP

filters water and small particles out of our plasma

Tissue fluid after being filtered

very much like plasma, contains water and dissolved substances, small proteins.

Plasma colloid asmotic pressure

created by small proteins in the tissue fluid, pulls more water out of capillaries.

lymph formation

more fluid pulled out than absorbed. this increases hydrostatic pressure and that pushes fluid into lymph capillaries.

lypmh function

absorption of dietary fat, collecting and delivering excess fluid to the bloodstream, foreign particles delivered to lymph nodes. Work with immune system to filter potentially harmful pathogens

lypmh movement

relies on pressure and skeletal muscle contractions.

Lymphedemia (or elephantisis)

caused when the flow is obstructed, causes swelling.

lymphocytes and macrophages in lymph nodes

fight invading pathogens

lymphocytes

produced in lymph nodes and bone marrow

Thymus

larger in infants, smaller in adults, replaced by fat and CT in the elderly. Site of T-cell formation, secrete hormone called thymosin.

spleen

largest lymphatic organ, has sinuses filled with blood. Contains two tissue types:

white pulp - lympocytes

red pulp - red blood cells, lymphocytes, macrophages

Lymph nodes serve as centers for the production of

Lymphocytes

The region of a lymph node through which blood vessels pass is called the

hilum

The collecting ducts that drain the lymphatic trunks are the

thoracic duct and the right lymphatic duct

lymph nodes occur throughout the body except in the

central nervous system

Jugular trunk

Brachiocephalic Vein

Right lymphatic duct

Bronchiomediastinal

Intercostal trunk

Internal jugular vein

Thoracic duct

Subclavian trunk

Thoracic duct

Intestinal trunk

Lumbar trunk

Lymphatic vessels

Lymphatic vessel

Subcapsule (macrophages, b-cells)

Lymph flow

Medulla (macrophages,t-cells

Germinal center

Sinus

Capsule

Nodule

Artery

Vein

Lymph flow