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Equine Urinary System - Horse Anatomy (view source)
Revision as of 15:57, 28 November 2012
, 15:57, 28 November 2012→Innervation
The bladder receives sympathetic and parasympathetic nerve supply.
The bladder receives sympathetic and parasympathetic nerve supply.
*Parasympathetic supply: This comes from S1-S3, synapses within the '''pelvic plexus''', continues as the '''pudendal nerve''' and is excitatory to the destrusor muscle. Parasympathetic dominance allows emptying of the bladder.
*Parasympathetic supply: This comes from S1-S3, synapses within the '''pelvic plexus''', continues as the '''pudendal nerve''' and is excitatory to the destrusor muscle. Parasympathetic dominance allows emptying of the bladder.
*Sympathetic Supply: This comes from L1-L4, synapses within the '''caudal mesenteric ganglion''' before entering the '''pelvic plexus. It then continues as the '''hypogastric nerves''' which terminate on beta 2 receptors within the detrusor muscle. It has inhibitory action on muscular contraction, therefore enabling bladder filling.
*Sympathetic Supply: This comes from L1-L4, synapses within the '''caudal mesenteric ganglion''' before entering the '''pelvic plexus. It then continues as the '''hypogastric nerves''' which terminate on beta 2 receptors within the detrusor muscle. It has inhibitory action on muscular contraction, therefore enabling bladder filling.
==Urethra==
==Urethra==