What is the most likely type of hypersensitivity associated with an agonizingly itchy case of poison ivy, appearance of hives after eating shellfish, or a positive TB test?
What will be an ideal response?
The hypersensitivity associated with poison ivy is delayed hypersensitivity allergic contact dermatitis. The hypersensitivity associated with hives is a local anaphylactic reaction. The hypersensitivity associated with a positive TB test is delayed hypersensitivity.
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During a primary humoral response to antigens all of the following occur except
A) B cells may differentiate into plasma cells immediately. B) B cells may undergo several rounds of mitosis before producing plasma cells and memory cells. C) antibody levels do not peak until 1 to 2 weeks after the initial exposure. D) neutrophils invade the surrounding areas, releasing chemotactic substances. E) the first immunoglobulins to appear in circulation are of the IgM type.
Classical neurotransmitters and neuropeptides are sometimes co-secreted from the same axon terminal
Indicate whether the statement is true or false
Which organ is responsible for the production of bile?
A. Liver B. Stomach C. Small intestine D. Large intestine
For graded potentials, the magnitude of triggering is coded for in frequency rather than amplitude of depolarizations
Indicate whether the statement is true or false