【cortisol英英释义cortisol的英文解释】总结：
Cortisol 是一种由肾上腺分泌的类固醇激素，主要在应激反应中起关键作用。它在调节代谢、免疫功能、血压以及身体对压力的反应中发挥重要作用。以下是 cortisol 的英英释义及与其相关的关键词解释。
表格：cortisol 英英释义与相关术语解释
| 术语 | 英英释义 |
| Cortisol | A steroid hormone produced by the adrenal cortex, which is involved in the body's response to stress, regulation of metabolism, and maintenance of blood pressure. |
| Adrenal cortex | The outer layer of the adrenal gland, responsible for producing corticosteroids such as cortisol. |
| Steroid hormone | A type of hormone derived from cholesterol, which can pass through cell membranes and affect gene expression. |
| Stress response | The physiological reaction of the body to a perceived threat or challenge, often involving the release of cortisol. |
| Metabolism | The process by which the body converts food into energy, regulated in part by cortisol. |
| Immune function | The role of cortisol in modulating the immune system, sometimes suppressing inflammatory responses. |
| Blood pressure | Cortisol helps maintain normal blood pressure levels, especially during periods of stress. |
| Hypothalamic-pituitary-adrenal (HPA) axis | A complex network of interactions between the hypothalamus, pituitary gland, and adrenal glands that regulates the production of cortisol. |
补充说明：
Cortisol 的分泌受到下丘脑-垂体-肾上腺轴（HPA 轴）的调控。当人体处于压力状态时，下丘脑释放促皮质激素释放激素（CRH），刺激垂体分泌促肾上腺皮质激素（ACTH），进而促使肾上腺分泌 cortisol。这种机制有助于身体应对短期压力，但长期高水平的 cortisol 可能会对健康产生负面影响，如免疫系统抑制、体重增加和情绪障碍等。
因此，了解 cortisol 的作用及其调节机制对于维持身心健康具有重要意义。