A10-year-old boy has been brought to the emergency department (ed) by ambulance in apparent anaphylaxis after accidentally eating a snack bar that contained peanuts. the ed nurse should be aware that this patient's signs and symptoms are attributable to:

The right answer is A massive release of histamine.

Anaphylactic shock is an immediate, severe and generalized allergic reaction that affects the body as a whole. It requires emergency treatment.

Anaphylactic shock may occur, for example, following a bite of a hymenopteran (bee), or if the drug-sensitive individual is injected with this allergen into the blood (eg, penicillin) or if ingests a food to which he is allergic.

In anaphylactic shock, a large number of mast cells and basophilic granulocytes release histamine in different areas of the body. The outcome can be fatal.

The symptoms appear very quickly; they include demonstrations:

Cutaneous: itching, swelling;

Respiratory: bronchioles tighten, breathing is difficult;

Digestive: nausea, vomiting, abdominal pain;

Cardiovascular: tachycardia, drop in blood pressure.

* Adrenaline (vasoconstrictor) and a bronchodilator should be used to control these serious effects of histamine.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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