Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
NK cells are cytotoxic cells that lyse and kill cancer cells and cells infected with certain viruses.
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Ch. 20 The Lymphatic System and Immunity
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 20, Problem 6
Which of the following does not describe the relationship between the lymphatic and immune systems?
a. Lymphoid organs and tissues house cells of the immune system.
b. Lymphoid organs and tissues trap pathogens for the immune system.
c. Lymphoid organs activate cells of the immune system.
d. Lymphoid organs and tissues create the surface barriers of the immune system.
Verified step by step guidance1
Step 1: Begin by understanding the roles of the lymphatic and immune systems. The lymphatic system is responsible for transporting lymph, a fluid containing infection-fighting white blood cells, while the immune system defends the body against pathogens.
Step 2: Review the functions of lymphoid organs and tissues. These include the lymph nodes, spleen, thymus, and tonsils, which house immune cells, trap pathogens, and activate immune responses.
Step 3: Analyze each option provided in the question. For example, options a, b, and c describe functions that align with the relationship between the lymphatic and immune systems.
Step 4: Evaluate option d. Surface barriers, such as skin and mucous membranes, are part of the innate immune system and are not created by lymphoid organs or tissues. This distinguishes option d from the other choices.
Step 5: Conclude that the correct answer is the option that does not describe the relationship between the lymphatic and immune systems, based on the analysis of the functions of lymphoid organs and tissues.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Lymphoid Organs and Tissues
Lymphoid organs and tissues, such as the spleen, thymus, and lymph nodes, are crucial components of the immune system. They serve as sites for the production and maturation of lymphocytes, which are essential white blood cells involved in immune responses. These organs also facilitate the trapping and processing of pathogens, thereby playing a vital role in the body's defense mechanisms.
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4:55
Lymphoid Tissue
Immune System Function
The immune system is responsible for identifying and eliminating pathogens, such as bacteria and viruses, that invade the body. It comprises various cells, including lymphocytes, macrophages, and antibodies, which work together to recognize and destroy foreign invaders. Understanding how lymphoid organs contribute to this process is essential for grasping the overall function of the immune system.
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6:08Map of the Lesson on Cells of the Immune System
Surface Barriers of the Immune System
Surface barriers, such as the skin and mucous membranes, are the first line of defense in the immune system. They act as physical and chemical barriers to prevent pathogens from entering the body. Unlike lymphoid organs, which are involved in the immune response after a pathogen has breached these barriers, surface barriers are not directly involved in the activation or housing of immune cells.
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1:28Physical Barriers
Related Practice
Textbook Question
Nonspecific immunity is also known as_____. Specific immunity is also known as_____. Specific immunity has the capacity for immunological ______ .
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Textbook Question
Your friend tests her snake-wrangling skills on an eastern diamondback rattlesnake, and is bitten and envenomated (injected with the snake's venom). In the emergency department, doctors administer the antivenin CroFab, which contains antibodies to the toxins in snake venom. Is this an example of active or passive immunity? Will this confer any lasting protection to your friend?
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Surface barriers contain substances in their secretions that kill pathogens and deter their growth.
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Textbook Question
Which of the following make up the body's first line of defense?
a. Surface barriers
b. Cells and proteins of adaptive immunity
c. Cells and proteins of innate immunity
d. All of the above
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Phagocytic cells of innate immunity include NK cells and basophils.