Changes

==Adrenal Glands==

==Adrenal Glands==

3. zona reticularis

3. zona reticularis

These zones all produce hormones derived from cholesterol, which is abundant in the cells. The '''adrenal cortex''' represents 80-90% of the adrenal gland.  

All these zones produce hormones derived from cholesterol, which is abundant in the cells. The '''adrenal cortex''' represents 80-90% of the adrenal gland.  

The '''adrenal medulla''' is primarily involved in the production of catecholamines; epinephrine and norepinephrine. In fetal life, the adrenal medulla plays a role in the autonomic nervous system. The medulla acts as a sympathetic ganglion with the postganglionic cells lacking axons. Through sympathetic preganglionic fiber stimulation, the medullary cells secrete catecholamines. The adrenal medulla represents only 10-20% of the adrenal gland.

The '''adrenal medulla''' is primarily involved in the production of catecholamines; epinephrine and norepinephrine. In fetal life, the adrenal medulla plays a role in the autonomic nervous system. The medulla acts as a sympathetic ganglion with the postganglionic cells lacking axons. Through sympathetic preganglionic fiber stimulation, the medullary cells secrete catecholamines. The adrenal medulla represents only 10-20% of the adrenal gland.

<gallery>

<gallery>

Image:Histology of the Adrenal Glands..jpg|<small>'''Histological section of the Adrenal Gland. (RVC 2008)</small>

Image:Histology of the Adrenal Glands..jpg|<small>'''Histological section of the Adrenal Gland, from the [[Endocrine Histology resource|Histology of the Endocrine system tutorial]]</small>

Image:Histology of the Adrenal Glands showing zones..jpg|<small>'''Histological section of the Adrenal Gland Cortical zones. (RVC 2008)</small>

Image:Histology of the Adrenal Glands showing zones..jpg|<small>'''Histological section of the Adrenal Gland Cortical zones, from the [[Endocrine Histology resource|Histology of the Endocrine system tutorial]]</small>

Image:Histology of the Adrenal Glands Medulla..jpg|<small>'''Histological section of the Adrenal Gland showing Medulla and Zona Reticularis (RVC 2008)</small>

Image:Histology of the Adrenal Glands Medulla..jpg|<small>'''Histological section of the Adrenal Gland showing Medulla and Zona Reticularis, from the [[Endocrine Histology resource|Histology of the Endocrine system tutorial]]</small>

</gallery>

</gallery>

==Functional anatomy==

==Functional anatomy==

{{Template:Learning

{{Template:Learning

|powerpoints = [[Endocrine Histology resource|Histology of the Endocrine system]]

|powerpoints = [[Endocrine Histology resource|Histology of the Endocrine system]]

}}

}}

 

[[Category:Endocrine System - Anatomy & Physiology]]

[[Category:Endocrine System - Anatomy & Physiology]]

[[Category:A&P Done]]

[[Category:A&P Done]]