5 Questions
Which cells originate from a common precursor, the pluripotent stem cell?
Leucocytes and mononuclear inflammatory cells
Which immune response is specific for a particular pathogen?
Adaptive
Which substance in tears and saliva is an antibacterial substance?
Lysosyme
Which layer defends the outside of the body as a tough layer of keratinised cells?
Skin
Which immune response sends cytokine signals to the adaptive immune response?
Innate
Study Notes
Cells and Tissues
- Cells of the immune system, including B cells and T cells, originate from a common precursor, the pluripotent stem cell.
Immune Response
- The adaptive immune response is specific for a particular pathogen, providing long-term immunity.
Defense Mechanisms
- Lysozyme is an antibacterial substance found in tears and saliva that helps to break down bacterial cell walls.
Skin and Barrier Function
- The outermost layer of the epidermis, comprising keratinized cells, defends the outside of the body as a tough, impermeable barrier.
Immune Signaling
- The innate immune response sends cytokine signals to the adaptive immune response, allowing for communication and coordination between the two systems.
Test your knowledge of the immune system's physical barriers to infection with this quiz. Explore topics like skin defense, mucosal membranes, and protective substances like lysosyme and stomach acid. Sharpen your understanding of the innate immune system with this informative quiz.
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