Over a million students use our free study notes to help them with their homework
The pathogen is first phagocytosed or engulfed by a phagocyte (either macrophage or neutrophil). The phagocyte seals the pathogen in an internal phagosome into which the phagocyte releases lysozymes. Thes...
Phagocytes are large irregularly shaped white blood cells that are involved in the non-specific immune system. They have the ability to engulf and digest foreign bodies, destroying them in a process known...
T helper cells recognise and bind to the antigen and become activated. The activated T helper cell stimulate B cells to form plasma cells that produce and release antibodies that are specific to the viral...
a stimulus depolarises the membrane potential above the threshold level e.g. -40 mvthis causes voltage gated Na+ ion channels to open- resulting in an influx of Na+ into the cellthis depolarises the membr...
the phagocyte recognises the antigen on the pathogen surface as foreignThe phagocyte cytoplasm moves around the pathogen, and the membranes fuse, forming a phagosomeLysosomes containing lysozymes fuse wit...
←
183
184
185
186
187
→
Internet Safety
Payment Security
Cyber
Essentials
