Definition

Noun: A hormone secreted by the anterior lobe of the pituitary gland (adenohypophysis). Its primary function is to stimulate the growth and activity of the adrenal cortex, particularly the secretion of corticosteroids like cortisol. It is a crucial component of the body's hypothalamic-pituitary-adrenal (HPA) axis stress response system.

Usage Examples

• Noun:
  • The doctor measured the patient's adrenocorticotrophic hormone levels to assess pituitary function.
  • Adrenocorticotrophic hormone is released in response to stress.
  • A deficiency in adrenocorticotrophic hormone can lead to adrenal insufficiency.

Advanced Usage

• Medical Context: Often abbreviated as ACTH in clinical and research settings. The measurement of ACTH is a key diagnostic test for disorders like Cushing's syndrome and Addison's disease.
  • The endocrinologist ordered an ACTH stimulation test.

Variants and Related Words

• ACTH: The standard acronym for adrenocorticotrophic hormone.
• Corticotropin: A synonym for adrenocorticotrophic hormone.
• Adrenocorticotropin: An alternative spelling and synonym.

Synonyms

• Corticotropin
• Adrenocorticotropin

Related Phrases and Concepts

• ACTH stimulation test: A diagnostic procedure to evaluate adrenal gland function by measuring cortisol response to injected synthetic ACTH.
• Hypothalamic-pituitary-adrenal (HPA) axis: The neuroendocrine system that regulates stress response, digestion, immune system, mood, and energy, in which ACTH is a key signaling hormone.

Noun

1. a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex