This document provides an overview of the adrenal gland and its functions. It begins with an introduction to endocrine glands and describes the location and shape of the adrenal glands. It then explains that the adrenal gland has two parts: the outer adrenal cortex and inner adrenal medulla. The adrenal cortex is further divided into three layers that secrete different hormones. The document provides details on the hormones produced by each layer and their functions. It concludes by stating that adrenal hormones modulate tissue and organ function, enabling the body to deal with stress.
5. introduction
 Endocrine glands
 Suprarenal glands
 Sit at the top of the kidneys
 Right handed triangular shaped
 Left handed semilunar shaped
 responsible for releasing hormones
8. Adrenal cortex
 Corticoids
 Divided into 3 layers
1. Zona glomerulosa(outer layer)
2. Zona fasciculata(middle layer)
3. Zona reticularis(inner layer)
9. Adrenal cortex
 Zona glomerulosa
 mineralocorticoids
 mainly aldosterone
 functions of aldosterone:
salt and water balance in body,
Reabsorb sodium iones and water,
Excretion of k+ and phosphate iones
 Deficiency:Addison’s disease
10. Adrenal cortex
 Zona fasciculata
 Gluco corticoids
 Cortisol, Cortisone, corticosterone
 Functions :
Increases blood glucose level,
Promote gluconeogenesis,
Stimulates RBC production,
Breaks down Protiens & Fats,
Stores glycogen in liver ,
Produces anti inflammatory reactions &
suppresses the immune response
 Cushing’s syndrome
11. Adrenal cortex
 Zona reticularis
 Gonado corticoids
 Androgen & Oestrogen
 Helps growth & functions of sex organs
 Masculinisation - females
 Gynaecomastia - males
12. ADRENAL MEDULLA
 Adrenaline & Noradrenaline
 Catecholamines
 Emergency hormones or Hormones of fight / flight
 Secreted in response to stimulation by sympathetic nerve
 Functions : Increases heart beat ,Increase Pupilary dilation
,Piloerection ,Sweating,Increase strength of heart
contraction & rate of respiration , Breakdown of glycogen
resulting in an increased concentration of glucose in blood,
Breakdown of lipids & proteins,Increase Blood
pressure,Increase blood supply to the extrimities
13. CONCLUSION
 They modulate the functioning of every tissues ,
organ , glands
 Have important effects on the way you think and feel
 Enable your body to deal with stress from every
possible source , ranging from injury and disease
 To keep your body’s reactions to stress in balance so
that they are appropriate and not harmful