Answer:
There are <em><u>four types of neuroglia</u></em> found within the central nervous system:
<u>Astrocytes</u> :
It maintains the blood brain barrier and preserve the chemical environment by recycling ions and neurotransmitters.
<u>Oligodendrocytes</u> :
The myelinate axons in the central nervous system and provide an overall structural framework.
<u>Ependymal cells</u> :
The line ventricles (brain) and central canal (spine) and are involved in the production of cerebrospinal fluid.
<u>Microglia</u> :
It removes cell debris, wastes and pathogens via phagocytosis.
Answer:
Human subject research is systematic, scientific investigation that can be either interventional (a "trial") or observational (no "test and Human subject research can be either medical (clinical) research or non-medical (e.g., social science) research.
The problems the girl exhibits when eating fruit is most likely due to elevated levels of fructose-1-phosphate in liver cells
Define Hereditary fructose intolerance (HFI).
Fruit sugar fructose and its precursors cannot be digested in people with hereditary fructose intolerance (HFI). The accumulation of fructose-1-phosphate in the liver, kidney, and small intestine is caused by a lack of activity of the enzyme fructose-1-phosphate aldolase.
The patient has HFI, which is due to a mutation in aldolase B. Sucrose would still be cleaved by sucrase, thus it would not increase in the stool. Fructose would not be metabolized normally, therefore it would be elevated in the blood and urine. Aldolase B would not cleave fructose 1-phosphate, thus its levels would be elevated and the product, glyceraldehyde, would not be produced.
HFI patients frequently grow to dislike fruit and sweets intensely. After consuming fructose-containing foods, they may experience symptoms like excruciating stomach pain, vomiting, and low blood sugar.
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