Across
- 1. known as the extent to which a pathogen is able to cause disease or damage.
- 3. immunity is immunity resulting from the activities of an individual’s own immune system.
- 4. when neutrophils engulf the bacterium to form a vesicle.
- 7. epithelium consists of ciliated columnar cells and a few goblet cells.
- 8. muscle is tissue which is capable of contraction, but which is not under voluntary control.
- 11. are globular proteins also known as immunoglobulins.
- 13. it’s a flexible airway that is supported by pieces of Cartilage.
- 14. fibres are present throughout the gas exchange system and provide flexibility during ventilation.
Down
- 2. when T-helper cells secrete chemicals is called….
- 4. is a eukaryotic organism and has many genes which can code for a wide variety of surface antigens.
- 5. is caused by parasites of the protoctist genus plasmodium.
- 6. diseases are diseases caused by pathogens.
- 9. is a rigid, but flexible supporting material containing a high proportion of collagen fibres.
- 10. a roughly spherical enveloped virus, with RNA as its genetic material.
- 12. cells both T-helper cells and T-killer cells produce their own what…
