Organ rejection takes place when your body is subjected to a new organ which is a foreign object and attacks it.
<h3>What do you mean by Graft rejection?</h3>
Graft rejection may be defined as a process in which a transplant recipient's immune system attacks the transplanted organ or tissue.
Xenograft shows high rejection. This is because it involves the transplantation between genetically distinct members of different species.
The process of organ rejection is initiated by T cells which perform the role of the recognization of a transplanted organ.
If these T cells are activated, it may lead to organ rejection by undergoing clonal expansion, and differentiation of the effector cells, which together lead to the obliteration of the tissues.
Therefore, organ rejection takes place when your body is subjected to a new organ which is a foreign object, and attacks it.
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Answer:
testes
Explanation:
Gonad, in zoology, primary reproductive gland that produces reproductive cells (gametes). In males the gonads are called testes; the gonads in females are called ovaries. (see ovary; testis).
Answer:
The size up of a motor unit varies from<u> just a few fibers</u> in the precise muscles to over a <u>thousand</u> fibers in the powerful muscles
Explanation:
A motor unit can be defined as a single motor neuron comprising all the muscle fibers that are stimulated by that neuron. Hence, when a motor neuron fires an electrical impulse, all the muscle fibers attached to that unit are contracted simultaneously. This motor unit can be smaller in size such as few neuron fibers to eyes for producing precise eye movement. On the other hand, these neurons can be delivering strong impulses to thousands of neuron fibers such as to leg muscles for producing powerful contractions.
Explanation:
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