Domanda del libro di testo
The lymphoid organ that functions primarily during youth and then begins to atrophy is:
a. Spleen
b. Thymus
c. Palatine tonsils
d. Bone marrow
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Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732
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TOC.tableOfContents
- Ch. 1 The Human Body: An Orientation25
- Ch. 2 Chemistry Comes Alive24
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System12
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System25
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System25
- Ch. 13 The Peripheral Nervous System and Reflex Activity30
- Ch. 14 The Autonomic Nervous System16
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart25
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Non è quello che usi tu?Cambia libro di testo
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Hoehn, Haynes, Abbott 12th EditionCh. 20 The Lymphatic System and Lymphoid Organs and TissuesProblema 9
Hoehn, Haynes, Abbott 12th EditionCh. 20 The Lymphatic System and Lymphoid Organs and TissuesProblema 9Capitolo 20, Problema 9
Collections of lymphoid tissue (MALT) that guard mucosal surfaces include all of the following except:
a. Appendix follicles
b. The tonsils
c. Peyer's patches
d. The thymus
Guida verificata passo dopo passo1
Step 1: Understand what MALT (Mucosa-Associated Lymphoid Tissue) is. MALT consists of lymphoid tissues that protect mucosal surfaces such as those in the respiratory, digestive, and urogenital tracts.
Step 2: Identify the examples of MALT given in the options: Appendix follicles, tonsils, and Peyer's patches are all known collections of lymphoid tissue associated with mucosal surfaces.
Step 3: Recall the function and location of the thymus. The thymus is a primary lymphoid organ involved in T-cell maturation and is not associated with mucosal surfaces.
Step 4: Compare each option to the definition of MALT. Since the thymus is not part of the mucosa-associated lymphoid tissue, it does not belong in the list of MALT collections.
Step 5: Conclude that the correct answer is the option that is not part of MALT, which is the thymus.
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Mucosa-Associated Lymphoid Tissue (MALT)
MALT refers to collections of lymphoid tissue found in mucosal linings of the body, such as the digestive, respiratory, and urogenital tracts. These tissues play a key role in immune defense by detecting and responding to pathogens at mucosal surfaces.
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Percorso guidato
0:49
Secondary Lymphoid Organs: MALT Example 1
Examples of MALT Structures
Common examples of MALT include the tonsils, Peyer's patches in the small intestine, and lymphoid follicles in the appendix. These structures contain immune cells that help protect mucosal surfaces from infection.
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Percorso guidato
2:31Introduction to MALT
Thymus and Its Role
The thymus is a primary lymphoid organ responsible for T cell maturation, not a MALT structure. Unlike MALT, it is located in the chest and does not directly guard mucosal surfaces, making it distinct from other lymphoid tissues listed.
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Percorso guidato
5:05Introduction to the Thymus
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