Chapter 21 Lymphatic System Advanced Biology Chapter 21 Lymphatic System

Arteries

It is a one way system back to the heart See page 745

Interstitial fluid that enters the lymphatics (lymphatic vessels)

Right Lymphatic Duct: Drains lymph from the right upper arm and right side of head and thorax

Thoracic Duct: Much Larger, Drains rest of body See page 747

Internal Jugular Vein Subclavian Vein At the Junction of See page 747

Red Bone Marrow T Lymphocytes – Killer T, Helper T B Lymphocytes - Antibodies

Body Protection Immune Response (activate T cells)

Proliferation site for lymphocytes Ideal surveillance vantage point

Embedded in connective tissue Inguinal, axillary, cervical

Lymph filters – MAC’s Activate Immune System

Lymphocyte proliferation Filter system

Stores breakdown products of RBCs Erythrocyte production in fetus Stores blood platelets

T cell maturation, become immunocompetent T cell maturation, become immunocompetent. Does not directly fight antigens Stroma secretes hormones for T cells to become immunocompetent.

Gather/Remove pathogens

Peyer’s Patches, appendix? Part of MALT – Mucosa-Associated Lymphatic Tissue Help patrol intestines and help generate memory