Class 10th

Life process important questions and answers Differences between artery and vain.  1.) Artery- ➡️Have thick elastic, muscular walls. ➡️Lumen* is narrow. ➡️Carry blood from heart to all body parts.  ➡️Carry oxygenated blood(except pulmonary* artery) 2.) Vein - ➡️Have thin, non-elastic walls. ➡️Lumen is wide(विस्तृत). ➡️Carry blood from all body parts to heart. ➡️Carry deoxygenated blood(except pulmonary vein). Note:- *Lumen- It is the opening inside a tubular body structure that is lined by body tissue known as an epithelial* membrane. Ex- large intestine, small intestine, vein, arteries. ➡️*Epithelial :- It is a tissue. Its shape is scutoid. ➡️It is tightly packed.  ➡️It formed a continuous sheet.  ➡️It has almost no intercellular space.  Life process short type questions and answers.