MDCAT · CHAPTER 12
Immunity
See how barriers, inflammation, phagocytes, antibodies and T cells cooperate—and where immune memory comes from.
Your study notes
01 / LESSON
Build the explanation.
- Compare innate and adaptive immune responses.
- Explain clonal selection of B and T lymphocytes.
- Distinguish active from passive immunity and primary from secondary responses.
02 / NOTES
The essentials, in one place.
- Innate defences are rapid and pattern-based.
- Adaptive responses depend on antigen-specific clonal selection.
- B cells support antibody-mediated defence; T cells coordinate and kill infected cells.
- Memory cells make later responses faster and stronger.
03 / ACTIVITY
Test the idea by changing something.
Predict the result first, run the activity, then explain what changed and why.
04 / DIAGRAM
Make the connections visible.
Pathogen or damage signals are detected.
Blood flow and permeability increase.
Innate cells engulf and process material.
Specific T cells are activated.
Effector and memory cells expand.
Cover the labels, redraw the sequence or comparison, and explain each connection aloud.
See diagrams in the full explanation ↗05 / QUIZ
Retrieve before you reread.
Build a timed test from this chapter’s 100 practice questions. Questions and options are shuffled; missed answers feed your revision notebook.
Original practice items, including related concept variants; not official examination questions.06 / REVISION SHEET
Take the chapter away with you.
A print-friendly sheet brings together the learning targets, key points, concept diagram, written recall prompts and applied MCQs. Add the answer key when you are ready to check.
Print / save the chapter sheet ↗