Patho Exam 1 Flashcard

Front

What type of hypersensitivity reaction occurs in response to peanuts?

Back

Type I hypersensitivity reaction, also known as an immediate hypersensitivity reaction, is characterized by the rapid onset of symptoms due to the release of histamine and other mediators from mast cells and basophils.

Front

What is the primary function of B cells in the immune system?

Back

B cells produce antibodies that help to identify and neutralize pathogens such as bacteria and viruses.

Front

What is the primary function of T cells in the immune system?

Back

T cells kill infected cells directly and help regulate the immune response.

Front

Do blood vessel walls separate intracellular fluid from blood plasma?

Back

False. Blood vessel walls do not separate intracellular fluid from blood plasma; they allow for the exchange of fluids and solutes.

Front

Are potassium imbalances considered the most dangerous of all electrolyte imbalances?

Back

True. Potassium imbalances can lead to serious cardiac and muscular complications.

Front

How is hypersensitivity best defined?

Back

Hypersensitivity is an excessive or inappropriate response of the immune system to a sensitizing antigen.

Front

What is the difference between innate and adaptive immunity?

Back

Innate immunity is the body's first line of defense, providing a non-specific response, while adaptive immunity involves specific responses tailored to particular pathogens.

Front

What role do antibodies play in the immune response?

Back

Antibodies bind to specific antigens on pathogens, marking them for destruction by other immune cells.

Front

What are the four types of hypersensitivity reactions?

Back

Type I (immediate), Type II (cytotoxic), Type III (immune complex-mediated), and Type IV (delayed-type) hypersensitivity.

Front

What is an antigen?

Back

An antigen is any substance that can provoke an immune response, typically a foreign protein or polysaccharide.