This is a type III hypersensitivity reaction mediated by immune complex deposits. Immune complexes are antigen-antibody (commonly IgG) complexes that are soluble and prone to deposition in multiple organs. Once immune complexes are deposited in an organ, neutrophils and macrophages will then attack the organ causing organ damage and eventually failure. Type III hypersensitivity reactions are characteristic in SLE and other autoimmune diseases such as rheumatoid arthritis, etc.
Other types are type I hypersensitivity which are mediated by mast cells and histamine with the involvement of IgE and this commonly happens in allergic reactions. Type II hypersensitivity is cytotoxic hypersensitivity wherein antibodies directly attack organs (not forming immune complexes). Type IV hypersensitivity (or cell-mediated toxicity) involves T-lymphocytes. This is a delayed type of hypersensitivity exemplified by reactions from <em>M. tuberculosis</em> bacilli in tuberculous disease.
There are 3 kinds of contraction in skeletal muscle:
Concentric contraction: The muscle in this contraction will gives force more than the load gives. This will make the muscle shorten as it pulling the load.
Eccentric contraction: In this contraction, the force given by muscle is not enough to pull the load. This causes the load pulling the muscle instead. So the muscle will be lengthened as the load moving away.
Isometric contraction: In this contraction, the length of the muscle will be kept same by adjusting the force given to be equal to the force needed.
Answer:
c
Explanation:
if there was no change, there is no way for the strongest of a species to pass on their genes as all of the species would be exactly the same and there would be no strongest
In this ecosystem the Leopard usually eats the Giant Panda bear cubs because the adult pandas are very intimidating out in the wild because of their size. The Leopard is then eaten by the Bengal Tiger which in this situation is the Tertiary Consumer and is at the top of the Panda Bears food chain.
The Panda comes under the secondary consumer, as it uses photosynthesis to produce its food – Bamboo. Cubs become a prey to other animals such as Leopards and tigers, which are known as the primary consumer. However adults intimidate other predators because of their great size.