The lymphatic system and body defenses

Why is the lymphatic system important to the body? How does exercise affect the lymphatic system? Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Other lymphoid organs remain relatively undeveloped until after birth. Immune System, Part 1: Crash Course AP. Lymphoid tissues and organs B.

The lymphatic system A. Every second of the day, an army of hostile bacteria, viruses, and fungi swarms on our skin and invades our inner passageways- yet we stay amazingly healthy most of the time, thanks to our body defense, the lymphatic system. With about 6nodes and a vast network of vessels penetrating nearly every tissue, the lymphatic system helps the body to balance fluids, fight. Lecture Notes taken froMarieb,E. Essentials of Human Anatomy and Physiology.

Although both types of organs help to maintain homeostasis, these two elements of the lymphatic system have substan tially different roles. Consists of two semi-independent parts 1. Transports escaped fluids back to the blood 2. Plays essential roles in body defense and resistance to disease II.

Many other body defenses are carried out by the lymphatic system. Vascular permeability increases in response to alarm chemicals. As a result, white blood cells, clotting factors, and body fluids move more quickly through blood vessel walls and into the injured area. Edema may produce pain if nearby nerve endings experience pressure.

It helps maintain fluid balance in the body by collecting excess fluid and particulate matter from tissues and depositing them in the bloodstream. Every organ, from your eyes to your guts, is equipped with physical and chemical barriers to protect it from harm. There are two systems that specialize in self-defense: the lymphatic system and the immune system. Protect the body by removing foreing material such as bacteria and tumor cells fromt he lymphatic stream and by producing lymphocytes that function in the immune response. Macrophages: Engulf and destroy bacteria, viruses, and other forign substnacesin the lymph before it is returned to the blood.

Take the Reading Quizto assess your understanding of this chapter. FAH-tik) system is a system that contains lymph nodes and a network of channels that carry fluid and cells of the immune system through the body. MYOON-uh-tee) is the condition of being protected against an infectious disease.

Immunity often develops after a germ is introduced to the body. Your body ’s lymphatic system removes useless elements, like waste and dead cells. In addition, it has another equally important job: strengthening your immune response.

It does this with lymph. This is a liquid that activates your natural defenses and strengthens your white blood cells. A major function of the lymphatic system is to drain body fluids and return them to the bloodstream.

Blood pressure causes leakage of fluid from the capillaries, resulting in the accumulation of fluid in the interstitial space—that is, spaces between individual cells in the tissues.