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Lower esophageal mucosal cell
4%
18/489
Fallopian tube mucosal cell
66%
322/489
Small intestinal mucosal cell
7%
35/489
Skeletal muscle cell
18%
90/489
Adipocyte
2%
9/489
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Dynein is essential for the functioning of flagella and cilia, of which, cilia is found in the fallopian tube mucosa and serves to sweep the ovum into the uterus. Dynein can be found in nearly every cell in the body associated with the golgi transport system (secretory cells) and in the nervous system participating in retrograde axonal transport. Proper ciliary function is important clinically, apparent in Kartagener's syndrome, in which dynein is defective. These patients suffer from upper respiratory tract infections (abnormal cilia in the respiratory tract) as well as infertility (abnormal cilia in the fallopian tubes). Incorrect Answers: Answer 1: The lower esophageal mucosa is composed of smooth muscle and is not dependent on dynein. Answer 3: Small intestinal mucosa has vili, not cilia, and is not dependent on dynein. Answer 4: Skeletal muscle cells are not dependent on dynein. Answer 5: Adipocytes are not dependent on dynein.
4.4
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