And because the liver secretes certain substances, it is also a gland.

由于肝脏分泌一些物质，这也是腺体。

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The thyroid is a gland at the base of the neck that is part of the endocrine system.

甲状腺是位于脖子底部的一个腺体，是内分泌系统的一部分。

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Synapse: Site of transmission of electric nerve impulses between two nerve cells or between a nerve cell and a gland or muscle cell.

突触：神经细胞之间或神经细胞和效应器细胞（如腺体细胞、肌肉细胞等）之间传导神经刺激的接点。

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Pancreatic cancer develops from the cells within the pancreas, a gland located high up in the abdomen just behind the stomach.

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Melatonin is a hormone produced in a gland in the brain, and helps maintain the natural cycle of sleep and wake.

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Gallstone pancreatitis is a condition in which a gallstone blocks a duct of the pancreas, a gland that produces enzymes that aid in the digestion of food.

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