Textbook Question
Stem cells responsible for lymphocytopoiesis are located in:
(a) The thymus and spleen
(b) The lymph nodes
(c) The red bone marrow
(d) All of these structures
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20. The Lymphatic System
Secondary Lymphoid Organs: The Spleen
Multiple Choice
What lymphatic structures trap bacteria in the posterior oral cavity?
A
palatine tonsils
B
submandibular tonsils
C
pharyngeal tonsils
D
tubal tonsils
Verified step by step guidance1
Begin by understanding the role of the lymphatic system in the body, which includes trapping and destroying bacteria and other pathogens.
Identify the location of the posterior oral cavity, which is the area at the back of the mouth near the throat.
Learn about the tonsils, which are lymphatic structures located in the oral cavity and pharynx. They play a crucial role in immune defense by trapping bacteria and other pathogens.
Differentiate between the types of tonsils: palatine tonsils are located on either side of the oral cavity, pharyngeal tonsils (also known as adenoids) are located in the roof of the nasopharynx, and tubal tonsils are located near the openings of the Eustachian tubes.
Understand that the palatine tonsils are primarily responsible for trapping bacteria in the posterior oral cavity, while the other tonsils also contribute to immune defense in nearby regions.
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