Anatomy and Physiology HAP101 Chapter Notes - Chapter 22: Perforin, Haematopoiesis, Phagosome

• School: Seneca College
• Department: Anatomy and Physiology
• Course: Anatomy and Physiology HAP101
• Professor: Tania Killian

Document Summary

Hap201 week five/chapter 22 the lymphatic system and immunity. This system consists of a fluid called lymph, vessels called lymphatic vessels that transport the lymph, a number of structures and organs containing lymphatic tissue (lymphocytes within a filtering tissue), and red bone marrow. This system circulates the body to help defend against disease-causing agents. Most components of blood plasma filter through blood capillary walls to form interstitial fluid. Once this fluid passes into lymphatic vessels, it is called lymph (clear fluid): the major difference between interstitial fluid and lymph is location: if is found between cells; lymph is located with lymphatic vessels and lymphatic tissue. Lymphatic tissue: specialized form of connective tissue that contains large numbers of lymphocytes. There are two types of lymphocytes that participate in adaptive immune responses: b cells and t cells. This system has three functions: drain excess interstitial fluid: lymphatic vessels drain excess interstitial fluid from tissue spaces and return it to the blood.