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Equine Urinary System - Horse Anatomy (view source)
Revision as of 13:55, 28 November 2012
, 13:55, 28 November 2012→Kidneys
The left kidney is between the last rib and 3rd transverse process. Its ventral surface is almost completely covered by the peritoneum and contacts the [[Alimentary System - Horse Anatomy#Small Intestine|small intestine]] and and [[Alimentary System - Horse Anatomy#Large Intestine|small colon]]. The spleen contacts it cranioventrally. Medially is the left [[Equine Endocrine System - Horse Anatomy#Adrenal Glands|adrenal gland]]and aorta.
The left kidney is between the last rib and 3rd transverse process. Its ventral surface is almost completely covered by the peritoneum and contacts the [[Alimentary System - Horse Anatomy#Small Intestine|small intestine]] and and [[Alimentary System - Horse Anatomy#Large Intestine|small colon]]. The spleen contacts it cranioventrally. Medially is the left [[Equine Endocrine System - Horse Anatomy#Adrenal Glands|adrenal gland]]and aorta.
===The Basic Components of the Kidney===
====Outer fibrous capsule====
A tough outer capsule surrounds the parenchyma and this prevents the kidney expanding.
====Renal Cortex====
The renal cortex is comprised of two parts: the external zone and internal zone (juxtomedullar).
====Renal Medulla====
The renal medulla contains medullary pyramids. The part nearest the cortex is the base of the pyramid which narrows to form the inner part; the renal papilla. The medulla can be split into two parts, the outer and the inner. Different parts of the [[:Category:Nephron| nephron]] reside in these areas
=====Outer Medulla=====
The outer medulla can be further divided into the outer and inner stripe
*'''Outer Stripe''': This section located just inside the cortex contains the following parts of the [[:Category:Nephron| nephron]]:
**[[Nephron Microscopic Anatomy #Proximal Tubule| Proximal straight tubules]]
**[[Nephron Microscopic Anatomy #The Distal Tubule| Distal straight tubules]]
**[[Nephron Microscopic Anatomy #The Loop of Henle| Thin descending and thick ascending limbs of the loop of henle]]
**[[Nephron Microscopic Anatomy #Collecting Duct| Outer medullary collecting ducts]]
**[[Nephron Microscopic Anatomy #The Vasa Recta| Vasa recta]]
*'''The Inner Stripe''': Located inside of the outer stripe this section contains the following parts:
**[[Nephron Microscopic Anatomy #The Loop of Henle| Thin ascending and thick ascending limbs of the loop of henle]]
**[[Nephron Microscopic Anatomy #Collecting Duct| Outer medullary collecting ducts]]
The outer stripe contains the straight proximal tubules and the inner does not. However the inner contains thin ascending limbs and the outer does not. This difference makes up the anatomical demarcation between the two stripes.
=====Inner Medulla=====
The inner medulla only contains the following parts:
*[[Nephron Microscopic Anatomy #The Loop of Henle| Loop of henle]]
*[[Nephron Microscopic Anatomy #Collecting Duct| Collecting ducts]]
*[[Nephron Microscopic Anatomy #The Vasa Recta| Vasa recta]]
===Renal Pelvis===
The '''renal sinus''' is located within an indentation on the medial side of the kidney. The renal pelvis is located within the renal sinus. All papillary ducts open into the renal pelvis. The renal pelvis then drains into the ureters. The renal pelvis is lined with transitional epithelium and contains mucous glands in the horse; giving urine a frothy appearence.
===Innervation===
The kidney receives sympathetic and parasympathetic fibres from the '''solar plexus'''. These fibres travel with renal arteries. Sympathetic fibres synapse in '''coeliac ganglion''' and '''cranial mesenteric ganglion'''.
===Lymphatic Drainage===
* Renal lymph nodes
==Ureters==
==Ureters==
==Bladder==
==Bladder==
==Urethra==
==Urethra==