EPITHELIUM
EPITHELIAL TISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lumen
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basement
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apical tube
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cortex
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Detailed explanation-1: -In biology, a lumen (plural lumina) is the inside space of a tubular structure, such as an artery or intestine. It comes from Latin lumen ‘an opening’.
Detailed explanation-2: -The lumen (symbol: lm) is the unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time, in the International System of Units (SI).
Detailed explanation-3: -Listen to pronunciation. (LOO-men) The cavity or channel within a tube or tubular organ such as a blood vessel or the intestine.
Detailed explanation-4: -Inner lumen: This part is made of polyethylene and has an internal wall that can be removed from the inside of the tube. Its external part is folded on the tube as its handle.
Detailed explanation-5: -The lumen of the digestive system includes the stomach and intestinal lumina. The stomach is a cavity in which significant food digestion occurs. The lumen of the stomach is surrounded by the mucosa, submucosa, muscularis externa, and serosa layers of the stomach.