Leukotrienes are part of a class of biologically active compounds that occur naturally in the white blood cells or the leukocytes. These compounds functions in the pathogenesis of inflammation. They trigger the contraction of the smooth muscles located in the bronchioles. Excess amounts of this substance is a cause of the inflammation during asthma and in allergic rhinitis.
Answer:
78
Explanation:
Chickens have 78 chromosomes. They inherit 39 from each parent, therefore a zygote (which is made up of an egg and a sperm, each a haploid gamete with 39 chromosomes) will have 78 chromosomes.
This is more than humans: we have 46 chromosomes, as we inherit 23 from each parent.
Oxygen, Carbon, Hydrogen, Nitrogen and Phosphorus.
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