is it adaptive ?
Yes, It evolved in early vertebrates and allows for a stronger immune response as well as immunological memory
Immune system
The adaptive immune system evolved in early vertebrates and allows for a stronger immune response as well as immunological memory,
where is the thymus gland located in the human body The thymus is located in the upper front part of the chest, in the anterior superior mediastinum, behind the sternum, and in front of the heart. what is this gland ? The thymus is a specialized primary lymphoid organ of the immune system. can it be removed ? Yes, The thymus is a specialized primary lymphoid organ of the immune system. what is its structure ? In children, the thymus is pinkish-gray, soft, and lobulated on its surfaces. At birth it is about 4–6 cm long, 2.5–5 cm wide, and about 1 cm thick. It increases in size until puberty, where it may have a size of about 40–50 g, following which it decreases in size in a process known as involution. is it present in any other animal ? Yes, The thymus is present in all jawed vertebrates what is the system you mentioned above ? The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease. what is its layered defense ? Physical barriers prevent pathogens such as bacteria and viruses from entering the organism.
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Immune system [SEP] Adaptive immune system
The adaptive immune system evolved in early vertebrates and allows for a stronger immune response as well as immunological memory, where each pathogen is "remembered" by a signature antigen. The adaptive immune response is antigen-specific and requires the recognition of specific "non-self" antigens during a process called antigen presentation. Antigen specificity allows for the generation of responses that are tailored to specific pathogens or pathogen-infected cells. The ability to mount these tailored responses is maintained in the body by "memory cells". Should a pathogen infect the body more than once, these specific memory cells are used to quickly eliminate it.