GNUR 155 Anatomy Final Exam Study Guide(RATED 100%) | VERIFIED BY TOP PROFESSORS

GNUR 155 Anatomy Final Exam Study Guide Chapter 23: Lymphatic System Lymphatic system consists of: • Lymph • Lymphatic vessels • Lymphatic tissues and organs Lymph: Interstitial fluid, lymphocytes, and macrophages • it is fluid that has escaped circulation, entering structures, and has vessels so that it can be dumped back into the venous circulation Lymphatic vessels: pass through lymphatic tissues/ organs and deliver lymph to venous circulation Primary lymphatic structures: (where lymphocytes differentiate) • Thymus • Red bone marrow -T cells -Bcells -NK cells Secondary lymphatic structures: (where lymphocytes replicate) • Tonsils • Lymph nodes: axillary, lumbar, pelvic, inguinal • Spleen • Mucosa: associated lymphoid tissue (MALT) -considered to be the “ front line of defense” -consist of lymphocytes and more B cells -Function of secondary tissue: the maintenance of normal blood volume and chemical composition of the interstitial fluid -BP in the capillaries is bout 35 Hg -pressure forces solutes and waste out of the plasma and into the interstitial fluid area -Some interstitial fluid enters the lymphatic system Functions of the lymphatic system: -produce, maintain, and distribute lymphocytes -maintain normal blood volume and the normal composition of the interstitial fluid -provide an alternative route for the transport of hormones, nutrients (**some dietary lipids are absorbed by the digestive tract and are carried to the blood stream via lymph vessels), and waste Structure of the lymphatic system: Lymphatic capillaries: SMALL lymphatic vessels Lymphatic ducts: LARGE lymphatic vessels