Changes

==Pituitary Gland==

==Pituitary Gland==

The pituitary gland, or '''hypophysis''' is an elongated appendage of the brain lying within a bony cavity of the [[Skull and Facial Muscles - Anatomy & Physiology#Sphenoid Bone (os sphenoidale)|sphenoid bone]] in the base of the skull - the '''Sella Turcica'''. The hypophysis is suspended ventral to the the [[Hypothalamus - Anatomy & Physiology|hypothalamus]] by a thin '''infundibular stalk'''. It lies between the more rostral '''optic chiasma''', and the more caudal '''mammillary bodies''', separated from the brain by a fold of dura mater known as the '''diaphragma sellae'''.  The gland is divided into '''anterior and posterior''', with different embryological origins reflecting a difference in function.

The pituitary gland, or '''hypophysis''' is an elongated appendage of the brain lying within a bony cavity of the [[Skull and Facial Muscles - Anatomy & Physiology#Sphenoid Bone (os sphenoidale)|sphenoid bone]] in the base of the skull - the '''Sella Turcica'''. The hypophysis is suspended ventral to the the [[Hypothalamus - Anatomy & Physiology|hypothalamus]] by a thin '''infundibular stalk'''. It lies between the more rostral '''optic chiasma''', and the more caudal '''mammillary bodies''', separated from the brain by a fold of dura mater known as the '''diaphragma sellae'''.  The gland is divided into '''anterior and posterior''', with different embryological origins reflecting a difference in function.

===Posterior pituitary(Neurohypophysis)===

===Posterior pituitary (Neurohypophysis)===

Consisting of the '''Pars Nervosa,''' this section is derived from a downgrowth of neural tissue from the [[Hypothalamus - Anatomy & Physiology|hypothalamus]].  As such, it is a collection of axons and nerve terminals that originate in the paraventricular and superoptic nuclei of the [[Hypothalamus - Anatomy & Physiology|hypothalamus]].   

Consisting of the '''Pars Nervosa,''' this section is derived from a downgrowth of neural tissue from the [[Hypothalamus - Anatomy & Physiology|hypothalamus]].  As such, it is a collection of axons and nerve terminals that originate in the paraventricular and superoptic nuclei of the [[Hypothalamus - Anatomy & Physiology|hypothalamus]].   

The pars nervosa stores and releases '''oxytocin''' and '''antidiuretic hormone (ADH)'''.

The pars nervosa stores and releases '''oxytocin''' and '''antidiuretic hormone (ADH)'''.

===Anterior pituitary(Adenohypophysis)===

===Anterior pituitary(Adenohypophysis)===

Consisting of the '''Pars Tuberalis and Pars Distalis''' this part has an embryological origin as an epithelial upgrowth from the foetal oral cavity called '''Rathke's Pouch'''.  

Consisting of the '''Pars Tuberalis and Pars Distalis''' this part has an embryological origin as an epithelial upgrowth from the foetal oral cavity called '''Rathke's Pouch'''.