Which one of the following correctly describes an event that may occur in the lymphatic system?
A - VCE - SSCE Biology - Question 29 - 2023 - Paper 1
Question 29
Which one of the following correctly describes an event that may occur in the lymphatic system?
A. antigen presentation by a dendritic cell to helper T cells
B. valv... show full transcript
Worked Solution & Example Answer:Which one of the following correctly describes an event that may occur in the lymphatic system?
A - VCE - SSCE Biology - Question 29 - 2023 - Paper 1
Step 1
A. antigen presentation by a dendritic cell to helper T cells
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is correct. Dendritic cells play a crucial role in the immune system by processing and presenting antigens to T cells, particularly helper T cells. This interaction is essential for the activation of adaptive immune responses.
Step 2
B. valves moving lymph fluid in two different directions
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect. Lymphatic valves are designed to prevent backflow and ensure that lymph fluid moves in only one direction, towards the thoracic duct and ultimately into the bloodstream.
Step 3
C. histamine triggering the release of IgE antibodies
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is not directly related to the lymphatic system. Histamine typically mediates allergic responses and is not responsible for triggering the release of IgE antibodies. Instead, IgE production is influenced by specific antigens in conjunction with helper T cells.
Step 4
D. phagocytosis of eosinophils
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is also incorrect. Eosinophils primarily respond to parasitic infections and are not primarily involved in phagocytosis, which is mainly a function of macrophages and neutrophils.
