A nursing instructor asks students to identify the correct s…

A nursing instructor asks students to identify the correct sequence of events following first exposure to a bacterial antigen. The students know that antigen-presenting cells activate helper T cells, which stimulate B cells to produce plasma cells and memory cells. Which process best explains long-term immunity?

A nursing student is reviewing adaptive immunity before an u…

A nursing student is reviewing adaptive immunity before an upcoming examination. The instructor explains that the adaptive immune response begins when immune cells recognize specific foreign molecules. The student asks what term is used to describe a substance capable of stimulating this response. Which answer is correct?

A client is admitted with hypotension following dehydration….

A client is admitted with hypotension following dehydration. The healthcare provider explains that maintaining adequate mean arterial pressure (MAP) is essential for organ perfusion. The nurse understands that MAP depends primarily on cardiac output and which additional factor?

A client receives intravenous penicillin for treatment of ba…

A client receives intravenous penicillin for treatment of bacterial pneumonia. Within minutes, the client develops generalized hives, wheezing, facial swelling, and hypotension. The nurse recognizes this as an acute allergic reaction. Which mechanism best explains the development of these symptoms?