Answer:
Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated.
Epithelial cells have two surfaces that differ in both structure and function.
The epithelial cells are nourished by substances diffusing from blood vessels in the underlying connective tissue. One side of the epithelial cell is oriented towards the surface of the tissue, body cavity, or external environment and the other surface is joined to a basement membrane. The basement layer is non-cellular in nature and helps to cement the epithelial tissue to the underlying structures.
Answer:
<u>Two ureters.</u>
These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.
<h2>Answer:</h2>
18.4 percent, 18.4%
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Explanation:</h2>
According to a report published by US officials the The predominance of obesity is 13.9 percent between 2- to 5-year-olds, 18.4 percent among 6- to 11-year-olds, and 20.6 percent amidst 12- to 19-year-olds.
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Answer:
here
Explanation:
There will be the nitrogenous bases (adenosine, cytosine, guanine, thymine), held in complementary pairs (A T, C G) by hydrogen bonds. Weak van der Waal's forces exists between the 'rungs'.
Two molecules of oxygen atoms are present in the oxygen molecule and ozone molecule has three oxygen atoms.The oxidation potential of ozone is higher as compared to that of oxygen so it can whirl some oxidation processes much faster than that of oxygen. The densities of both the molecules are also different.
