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.
Immune system
The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease.
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
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Immune system [SEP] Introduction
The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. In many species, there are two major subsystems of the immune system: the innate immune system and the adaptive immune system. Both subsystems use humoral immunity and cell-mediated immunity to perform their functions. In humans, the blood–brain barrier, blood–cerebrospinal fluid barrier, and similar fluid–brain barriers separate the peripheral immune system from the neuroimmune system, which protects the brain.