Anterior Pituitary Gland

Diagram of posterior and anterior pituitary hormones, showing hypothalamic releasing hormones, pituitary hormones, target organs, and physiological effects.

Anterior Pituitary Endocrine Function

Diagram of the HPA axis showing stress and diurnal regulation influencing the hypothalamus, which releases CRH to stimulate the anterior pituitary to release ACTH. ACTH stimulates the adrenal cortex to produce cortisol, which affects multiple target organs and provides feedback inhibition.

Cortisol and the HPA Axis

Diagram of the hypothalamic–pituitary–growth hormone axis showing hypothalamic GHRH stimulation and somatostatin suppression of the anterior pituitary, growth hormone effects on the liver and metabolism, IGF-1 production, and stimulation of bone and muscle growth with negative feedback.

Growth Hormone

Hypothalamic-Pituitary-Thyroid Axis

Diagram of prolactin regulation showing hypothalamic TRH stimulation and dopamine inhibition of prolactin release from the anterior pituitary, with effects on breast tissue and suckling-related feedback.

Prolactin

Diagram of the hypothalamic–pituitary–gonadal axis showing hypothalamus, GnRH, anterior pituitary, LH and FSH, gonads, sex hormones, and negative feedback loops.

Gonadotropins and the Hypothalamic Pituitary Axis

Popular

Flowchart showing ketone body formation: two acetyl-CoA molecules form acetoacetyl-CoA, then HMG-CoA, and acetoacetate, which branches into beta-hydroxybutyrate and acetone.
The Liver

Lipid Metabolism in the Liver

by Dr. Danny Stevens

Diagram of a virus showing DNA or RNA inside a protein coat and outer envelope.
Infections

Viral Infection

by Farhana Patel

Components

Cerebrospinal Fluid

by Namita Anand