This article, the sixth in an eight-part series, examines the anatomy and physiology of the endocrine glands and tissues associated with the gastrointestinal tract. The endocrine system comprises ...

The endocrine system is made up of tissues and glands that produce hormones to coordinate and regulate vital bodily functions. Previous articles in this series have examined the anatomy and physiology ...

Ageing is a process characterized by a progressive decline in cellular function, organismal fitness and increased risk of age-related diseases and death. Several hundred theories have attempted to ...