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Chapter 40: Q.20 (page 1172)

How does the lymphatic system work with blood flow?

Short Answer

Expert verified

Fluid that is forced out of the bloodstream during normal circulation is filtered through lymph nodes to remove bacteria, abnormal cells and other matter.

Step by step solution

01

Step 1. Introduction 

The lymphatic system, or lymphoid system, is an organ system in vertebrates that is part of the immune system, and complementary to the circulatory system. It consists of a large network of lymphatic vessels, lymph nodes, lymphatic or lymphoid organs, and lymphoid tissues.

02

Step 2. Explanation 

  • Lymph capillaries take fluid from the blood to the lymph nodes.
  • The lymph nodes filter the lymph by percolation through connective tissue filled with white blood cells.
  • The white blood cells remove infectious agents, such as bacteria and viruses, to clean the lymph before it returns to the bloodstream.

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Most popular questions from this chapter

Why are open circulatory systems advantageous to some

animals?

a. They use less metabolic energy.

b. They help the animal move faster.

c. They do not need a heart.

d. They help large insects develop.

In humans, the plasma comprises what percentage of the blood?

a. 45 percent

b. 55 percent

c. 25 percent

d. 90 percent

List some of the functions of blood in the body.

Blood flow that is directed through the lungs and back to

the heart is called ________.

a. unidirectional circulation

b. gill circulation

c. pulmonary circulation

d. pulmocutaneous circulation

How do arteries differ from veins?

a. Arteries have thicker smooth muscle layers to accommodate the changes in pressure from the heart.

b. Arteries carry blood.

c. Arteries have thinner smooth muscle layers and valves and move blood by the action of skeletal muscle.

d. Arteries are thin walled and are used for gas exchange.
See all solutions

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