Urinary Organs Easy

Urinary System

• The kidneys are retroperitoneal organs.

Kidney Location

• The right kidney is located cranially to the right of the midline, near the diaphragm.
• The left kidney is located caudally to the left of the midline, near the adrenal gland.

Renal Sinus Function

• The renal sinus is a fatty, connective tissue that surrounds the renal pelvis and calyces, and contains blood vessels and nerves.

Renal Crest

• In dogs, the renal crest is a transverse ridge on the ventral surface of the kidney.
• In cats, the renal crest is absent.

Feline Kidneys

• Feline kidneys have a more lobulated appearance compared to dogs.

Trigone Vesicae Function

• The trigone vesicae is a smooth muscle layer in the bladder that aids in the accumulation of urine.

Ligaments

• The falciform ligament of the liver is associated with the round ligament of the liver in adults.
• The lateral ligament of the urinary bladder is associated with the lateral cystourethral ligament in adults.

Prostate Gland Function

• The prostate gland in male dogs produces seminal fluid and aids in urination.

Veterinary Anatomy I: CVM 710 Learning Objective

• One of the learning objectives is to identify and describe the organs of the urinary system.

Solid and Hollow Organs

• Solid organs include the kidneys, liver, and prostate gland.
• Hollow organs include the bladder and urethra.

Urinary System Organs

• The major organs of the urinary system are the kidneys, ureters, bladder, and urethra.

Kidney Function

• The functional unit of the kidney is the nephron, which filters blood and produces urine.

Renal Pelvis Function

• The renal pelvis collects urine from the calyces and funnels it into the ureter.

Kidney Location in Body

• The right and left kidneys are located in the retroperitoneal space, near the spine.

Ureter-Bladder Relationship

• The ureters empty urine into the bladder.

Bladder Function

• The bladder is a hollow, muscular organ that stores urine.

Urethra Function

• The urethra is a muscular tube that carries urine from the bladder to the external urethral orifice for excretion.