Adrenocortical

The adrenocortical system is a component of the endocrine system, specifically the adrenal glands, which are small, triangular-shaped organs located on top of each kidney. The adrenal glands consist of two main parts: the adrenal cortex and the adrenal medulla. The adrenocortical system refers to the adrenal cortex, which is responsible for producing a variety of hormones that play crucial roles in regulating metabolism, immune function, and stress response.

The adrenal cortex is divided into three layers, each producing different hormones:

1. Zona Glomerulosa: Produces mineralocorticoids, primarily aldosterone, which helps regulate sodium and potassium balance in the body.

2. Zona Fasciculata: Produces glucocorticoids, such as cortisol, which are involved in metabolism, immune function, and stress response.

3. Zona Reticularis: Produces androgens and weak glucocorticoids.

The adrenocortical system is under the control of the hypothalamic-pituitary-adrenal (HPA) axis, a complex feedback loop that regulates hormone production and release. The hypothalamus releases corticotropin-releasing hormone (CRH), which stimulates the pituitary gland to release adrenocorticotropic hormone (ACTH). ACTH then stimulates the adrenal cortex to produce and release its hormones.

Dysfunction of the adrenocortical system can lead to various disorders, including Addison's disease, Cushing's syndrome, and congenital adrenal hyperplasia. These conditions can cause symptoms such as fatigue, weight loss, muscle weakness, and changes in skin pigmentation. Treatment typically involves hormone replacement therapy or medication to manage symptoms.