chapter 10 organs for lymphatic system

Question 1

Lymph

Answer 1

transparent, colorless, tissue; contains lymphocytes and monocytes and flows in a one-way direction toward the heart

Question 2

lymphatic vessels

Answer 2

transport lymph from body tissues into the right and left subclavian veins, which then empty into the superior vena cava. The lymphatic vessels begin as capillaries spread through the body then merge into larger tubes that eventually become ducts in the chest. They provide a one-way flow for lymph, which enters through veins into the circulatory system.

Question 2

lymph nodes

Answer 2

small, spherical bodies composed of lymphoid tissue. They may be singular or grouped together along the path of a lymph vessels. The nodes filter lymph to keep substances such as bacteria and other foreign agents from entering the blood. They also contain lymphocytes.

Question 3

spleen

Answer 3

located in the left side of the abdominal cavity between the stomach and the diaphragm. In adulthood, the spleen is the the largest lymphatic organ in the body. Blood, rather than lymph, flows through the spleen. Blood is cleansed of microorganisms in the spleen.

Question 4

thymus gland

Answer 4

one of the primary lymphatic organs, it is located anterior to the ascending aorta and posterior to the sternum between the lungs. It plays an important role in the development of the body’s immune system, particularly from infancy to puberty.