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Order the following according to increasing rate of effusion:
F2, Cl2, NO, NO2, CH4
Urethral Sphincters
Circular muscles that control the passage of urine out of the bladder through the urethra, with both involuntary internal and voluntary external components.
Epithelium
A layer of cells covering the body surfaces, lining cavities and organs, and forming glands.
Mucous Coat
A protective layer of mucus lining various cavities and canals in the body, such as the digestive and respiratory tracts, which traps pathogens and particles.
Glomerulus
A network of tiny blood vessels located within the kidney that filters waste products from the blood to form urine.
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