Sickle cell is a disorder that affects the
molecules in the red blood cells, particularly the hemoglobin. The hemoglobin
is the molecule responsible for transporting oxygen throughout the body. When a
person has sickle cell anemia, the red blood cells are distorted crescent
shapes that do not travel in the bloodstream properly and efficiently. As a
result, this disorder hampers the distribution of oxygen throughout the body.
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Anemia is the major characteristic of sickle cell
disorder. A person with sickle cell anemia has low number of red blood cells
that usually begin in early childhood. A person who is experiencing Sickle Cell
Anemia will have multiple and repeated infections, and periodic episodes of
pain. The severity of this condition varies from person to person but is common
in African descents. </span>
the gestation period of an African elephant is 22 months
The correct answer is: To propose the theory of evolution by natural selection
Answer:
Low,cell,increase,decrease,volume,pressure,Renin,negative
Explanation:
It is synthesized when blood pressure is low or cell division is activated.It causes increase in resistance and decrease in fluid output(which helps to maintain blood volume and blood pressure) and an increase in blood volume(if fluid intake occurs). Consequently,blood pressure increases.This is aided by the release of both renin and aldosterone.As the blood pressure returns within its normal homeostatic levels,both renin release and angiotensin 2 synthesis are decreased by negative feedback.
