Of the following, select those that are true about metabolism

metabolic processes affect all cells of the body
metabolic regulation involves endocrine structures, the liver, muscle, fat, and brain cells
metabolism depends on the availability of fuel and oxygen
metabolism is influenced by age, sex, and lean body mass

Explanation

• Metabolism involves a complex network of hormones and enzymes to convert food into fuel.

• Metabolism is regulated by endocrine structures, the liver, muscle, fat, and brain cells, affecting all cells, and is dependent on the availability of fuel and oxygen, and the balance of anabolic against catabolic processes.

• It is closely regulated by thyroid hormone, with some influence by cortisol and epinephrine, but can be influenced by factors such as age, sex, and lean body mass.

• The endocrine role, not the exocrine role, is closely involved in metabolism, particularly that of plasma glucose regulation and storage. The exocrine secretions assist the digestion and absorption processes.

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