Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Jump to navigation
Jump to search
Nervous Pathway Eliciting Reproductive Behaviour - Anatomy & Physiology (view source)
Revision as of 15:23, 29 November 2010
, 15:23, 29 November 2010Text replace - "-_Anatomy_%26_Physiology" to "- Anatomy & Physiology"
== Sensitization ==
== Sensitization ==
* Reproductive behaviour can only take place if the neurons in the [[Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamus]] have been sensitized to respond to sensory signals.
* Reproductive behaviour can only take place if the neurons in the [[Hypothalamus_- Anatomy & Physiology#Hypothalamus|hypothalamus]] have been sensitized to respond to sensory signals.
=== Male ===
=== Male ===
* Testosterone is aromatized to oestradiol in the brain. Oestradiol promotes reproductive behaviour.
* Testosterone is aromatized to oestradiol in the brain. Oestradiol promotes reproductive behaviour.
* Testosterone is produced in small episodes every 4-6 hours.
* Testosterone is produced in small episodes every 4-6 hours.
* Relatively constant supply of testosterone, thus oestradiol, to the [[Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamus]] in the male.
* Relatively constant supply of testosterone, thus oestradiol, to the [[Hypothalamus_- Anatomy & Physiology#Hypothalamus|hypothalamus]] in the male.
* This allows the male to initiate reproductive behaviour at any time.
* This allows the male to initiate reproductive behaviour at any time.
=== Generic Neural Pathway for Sexual Behaviour===
=== Generic Neural Pathway for Sexual Behaviour===
* Under the influence of oestrogen, sensory inputs such as [[Reproductive_Behaviour_-_Pre-copulatory_Behaviour_-_Anatomy_%26_Physiology#Vomeronasal_Organ|olfaction]], [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Auditory_Signals|audition]], [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Visual_Signals|vision]] and [[Reproductive_Behaviour_-_Pre-copulatory_Behaviour_-_Anatomy_%26_Physiology#Tactile_Stimulation|tactility]] send neural messages to the [[Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamus]] .
* Under the influence of oestrogen, sensory inputs such as [[Reproductive_Behaviour_-_Pre-copulatory_Behaviour_- Anatomy & Physiology#Vomeronasal_Organ|olfaction]], [[Reproductive_Behaviour_-_Attractivity_Behaviour_- Anatomy & Physiology#Auditory_Signals|audition]], [[Reproductive_Behaviour_-_Attractivity_Behaviour_- Anatomy & Physiology#Visual_Signals|vision]] and [[Reproductive_Behaviour_-_Pre-copulatory_Behaviour_- Anatomy & Physiology#Tactile_Stimulation|tactility]] send neural messages to the [[Hypothalamus_- Anatomy & Physiology#Hypothalamus|hypothalamus]] .
* Sensory afferent neurons synapse directly on neurons in the [[Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|ventromedial and pre-optic hypothalamic regions]].
* Sensory afferent neurons synapse directly on neurons in the [[Hypothalamus_- Anatomy & Physiology#Hypothalamus|ventromedial and pre-optic hypothalamic regions]].
* These sensory inputs cause neurons in the hypothalamus to release behaviour specific peptides that serve as neurotransmitters.
* These sensory inputs cause neurons in the hypothalamus to release behaviour specific peptides that serve as neurotransmitters.
* Neurotransmitters act on neurons in the [[Midbrain_-_Anatomy_%26_Physiology|midbrain]].
* Neurotransmitters act on neurons in the [[Midbrain_- Anatomy & Physiology|midbrain]].
* Neurons in the midbrain serve as receiving zones for the peptides produced by [[Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamic neurons]].
* Neurons in the midbrain serve as receiving zones for the peptides produced by [[Hypothalamus_- Anatomy & Physiology#Hypothalamus|hypothalamic neurons]].
* [[Midbrain_-_Anatomy_%26_Physiology|Midbrain]] translated neuropeptide signals into a fast response.
* [[Midbrain_- Anatomy & Physiology|Midbrain]] translated neuropeptide signals into a fast response.
* Neurons in the midbrain synapse with neurons in the brain stem (medulla).
* Neurons in the midbrain synapse with neurons in the brain stem (medulla).
* Nervous signals are integrated in the medulla.
* Nervous signals are integrated in the medulla.
* From the medulla, nerve tracts extend to the spinal cord where nerves synapse with motor neurons that innervate muscles that cause [[Reproductive_Behaviour_-_Receptivity_Behaviour_-_Anatomy_%26_Physiology|lordosis]] and mounting.
* From the medulla, nerve tracts extend to the spinal cord where nerves synapse with motor neurons that innervate muscles that cause [[Reproductive_Behaviour_-_Receptivity_Behaviour_- Anatomy & Physiology|lordosis]] and mounting.
[[Category:Reproductive System]]
[[Category:Reproductive System]]