Changes

Many of the endocrine glands have a similar basic structure, composed of clusters of secretory cells of epithelial origin.  Hormones are secreted into the interstitial space whereby they are rapidly absorbed into the [[Vascular System - Anatomy & Physiology|vascular system]].  In contrast the [[Exocrine - Anatomy & Physiology|exocrine]] system utilises ducts enabling it to secrete its contents directly to its target area.

Many of the endocrine glands have a similar basic structure, composed of clusters of secretory cells of epithelial origin.  Hormones are secreted into the interstitial space whereby they are rapidly absorbed into the [[Vascular System - Anatomy & Physiology|vascular system]].  In contrast the [[Exocrine - Anatomy & Physiology|exocrine]] system utilises ducts enabling it to secrete its contents directly to its target area.

==The main endocrine glands==  

==The Endocrine Glands==  

*[[Hypothalamus - Anatomy & Physiology|Hypothalamus]]

*[[Hypothalamus - Anatomy & Physiology|Hypothalamus]]

*[[Pituitary Gland - Anatomy & Physiology|Pituitary Gland]]

*[[Pituitary Gland - Anatomy & Physiology|Pituitary Gland]]