When her son fails to arrive home as expected, elena fears he has been in an accident. both her heart and respiration rate remain elevated until she sees him come safely through the door. her body soon returns to normal due to the action of her nervous system?

Autonomic nervous system is divided into parasympathetic nervous system and sympathetic nervous system. sympathetic nervous system prepares the body for an emergency while parasympathetic nervous system restores the normal conditions of our body. so your answer will be parasympathetic nervous system.
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Early 18th century british industries were generally small scale and relatively unsophisticated. most textile production, for example, was centred on small workshops or in the homes of spinners, weavers and dyers: a literal ‘cottage industry’ that involved thousands of individual manufacturers. such small-scale production was also a feature of most other industries, with different regions specialising in different products: metal production in the midlands, for example, and coal mining in the north-east.two illustrations of 18t