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Pituitary Gland - Anatomy & Physiology (view source)
Revision as of 11:24, 2 January 2011
, 11:24, 2 January 2011→Test yourself with the Pituitary Gland Flashcards
During Stage 2 of parturition, the foetus engages the cervix. This initiates a neuroendocrine reflex, '''The Fergusson reflex'''. This is an example of a [[Positive Feedback - Anatomy & Physiology|positive feedback mechanism]], which occurs when stretch receptors in the [[Cervix - Anatomy & Physiology|cervix]] are stimulated. Sensory nerve endings in cervix are stimulated causing afferent nerve impulses to be sent to the hypothalamus. Neuroendocrine cells of the paraventricular and supraoptic nuclei depolarise and Oxytocin is secreted from the pars nervosa. Oxytocin enters the blood circulation and acts on the oxytocin receptors in the myometrium. Uterine contractions therefore, increase in strength and frequency.
During Stage 2 of parturition, the foetus engages the cervix. This initiates a neuroendocrine reflex, '''The Fergusson reflex'''. This is an example of a [[Positive Feedback - Anatomy & Physiology|positive feedback mechanism]], which occurs when stretch receptors in the [[Cervix - Anatomy & Physiology|cervix]] are stimulated. Sensory nerve endings in cervix are stimulated causing afferent nerve impulses to be sent to the hypothalamus. Neuroendocrine cells of the paraventricular and supraoptic nuclei depolarise and Oxytocin is secreted from the pars nervosa. Oxytocin enters the blood circulation and acts on the oxytocin receptors in the myometrium. Uterine contractions therefore, increase in strength and frequency.
==Test yourself with the Pituitary Gland Flashcards==
==Links==
Click here for the [[Pituitary_Gland_Flash_Cards_- Anatomy & Physiology|pituitary gland flashcards]].
[[Pituitary_Gland_Flash_Cards_- Anatomy & Physiology|Pituitary Gland Flashcards]]
==Literature Search==
==Literature Search==