Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d.Interleukin-1 is a cytokine that prevents viral replication in infected cells.
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Ch. 20 The Lymphatic System and Immunity
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814
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TOC.tableOfContents
- Ch. 1 Introduction to Anatomy and Physiology24
- Ch. 2 The Chemistry of Life37
- Ch. 3 The Cell54
- Ch. 4 Histology46
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System35
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System41
- 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 Heart28
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity41
- 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
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Non è quello che usi tu?Cambia libro di testo
Capitolo 20, Problema 8
Which of the following functions is/are performed by complement proteins?
a. Cell lysis
b. Opsonization
c. Enhancing inflammation
d. Only a and b
e. All of the above
Guida verificata passo dopo passo1
Step 1: Understand the role of complement proteins in the immune system. Complement proteins are part of the innate immune system and help defend the body against pathogens by enhancing various immune responses.
Step 2: Define the term 'cell lysis.' Complement proteins can form a membrane attack complex (MAC) that creates pores in the membranes of pathogens, leading to their destruction through cell lysis.
Step 3: Define 'opsonization.' Complement proteins can coat the surface of pathogens, making them easier for phagocytes (like macrophages) to recognize and engulf. This process is called opsonization.
Step 4: Explain how complement proteins enhance inflammation. Complement proteins can stimulate the release of inflammatory mediators, such as histamine, which increases blood flow and attracts immune cells to the site of infection.
Step 5: Evaluate the options provided in the question. Since complement proteins perform all three functions (cell lysis, opsonization, and enhancing inflammation), the correct answer would include all of the above functions.
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Complement System
The complement system is a part of the immune system consisting of proteins that enhance the ability of antibodies and phagocytic cells to clear pathogens from an organism. It plays a crucial role in immune responses, including opsonization, cell lysis, and inflammation. Understanding how these proteins function helps in grasping their importance in both innate and adaptive immunity.
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Percorso guidato
4:25
Complement System
Opsonization
Opsonization is a process where pathogens are marked for destruction by immune cells. Complement proteins bind to the surface of pathogens, making them more recognizable to phagocytes like macrophages and neutrophils. This enhances the efficiency of the immune response, allowing for quicker and more effective clearance of infections.
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Percorso guidato
4:09Opsonization
Cell Lysis
Cell lysis refers to the destruction of a cell's membrane, leading to its death. In the context of the complement system, certain complement proteins form a membrane attack complex that creates pores in the target cell's membrane, causing it to burst. This mechanism is particularly effective against bacteria and is a key function of the complement system in combating infections.
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Percorso guidato
3:18Cell Lysis of Invading Microbes
Pratica correlata
Domanda del libro di testo
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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Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Fever is generated by pyrogens that reset the temperature set point of the hypothalamus to a lower value.
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Domanda del libro di testo
Injured tissue releases chemicals called______ that mediate the four cardinal signs of inflammation, which are _____, ______,_____ , and_______.
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Domanda del libro di testo
When naïve B cells are activated, they differentiate into:
a. Plasma cells
b. Memory cells
c. Both a and b
d. None of the above
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Domanda del libro di testo
Match the following antibodies with the correct definition.
____IgD
____IgM
____IgG
____IgA
____IgE
a. Antibody found in secretions
b. Most common antibody; crosses the placenta
c. Antibody involved in allergies and parasitic infections
d. Pentamer and potent agglutinating agent
e. Antibody bound to the B cell plasma membrane
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