026-2023+Abdomen++%26+pelvis+Urinary+organs+Pelvic+cavity+CA.pdf

Veterinary Anatomy I: CVM 710: Fall 2023 026-Urinary organs Dr. Ismael Concha-Albornoz [email protected] www.anato.cl Learning Objectives 1. Identify and list the major organs of the urinary system as well as the features, divisions, and functions of each. Based on this knowledge, trace a...

Veterinary Anatomy I: CVM 710: Fall 2023 026-Urinary organs Dr. Ismael Concha-Albornoz [email protected] www.anato.cl Learning Objectives 1. Identify and list the major organs of the urinary system as well as the features, divisions, and functions of each. Based on this knowledge, trace a drop of urine from the renal crest to the fire hydrant listing, in order, each component of the urogenital tract encountered in route. 2. Define and differentiate renal cortex, renal medulla, renal hilus, renal sinus, renal pelvis, pelvic recess, renal pyramid, renal papilla, and renal crest. 3. Describe the location and the cranial/caudal relationship of the right and left kidneys. 4. Describe the location of the ureters and its relationship with the bladder. 5. Describe the bladder and the urethra Solid organs (capsule): Liver, spleen, kidneys, adrenal glands, ovaries, testicles,. Hollow organs: Digestive tract, ureter, urine bladder, uterus,.. Retroperitoneal space c Parietal peritoneum Connective peritoneum (Mesos) Intestine Spleen or Liver Visceral peritoneum Peritoneal Cavity Capsule Solid organs (capsule): Liver, spleen, kidneys, adrenal glands, ovaries, testicles,. Hollow organs: Digestive tract, ureter, urine bladder, uterus,.. Retroperitoneal space Retroperitoneal organs c Capsule RKidney LKidney Intraperitoneal organs Peritoneal organs Capsule Ovary Ovary Parietal peritoneum Connective peritoneum (Mesos) Intestine Spleen or Liver Visceral peritoneum Peritoneal Cavity Capsule Kidneys Location: Retroperitoneal Right kidney: located at the level of (L1-L3) Left kidney: located at the level of (L2 – L4) Cranial poles Adipose capsule of kidney (perinephric or perirenal fat) Caudal poles Radiographic image: • lateral view of both kidneys • “left kidney got left behind” Kidneys: • • • Cortex Medulla – Renal pyramids – Renal crest Renal sinus Renal medulla Renal sinus: cavity w/in kidney which is occupied by the renal pelvis, renal calyces, blood vessels, nerves, & fat. Renal pyramid Hilus Entrance/exit of renal artery, renal vein, ureter and lymphatics Renal cortex Kidneys: Arcuate vessels Capsule Interlobar vessels Renal crest Kidney: Pelvic recesses • Ureter Renal pelvis Ureter Renal pelvis Differences between canine and feline kidneys: • Feline kidneys have subcapsular veins – Multiple large veins on the cortical surface • Renal crest is different – Longitudinal crest in dog – Cone-shaped in cat Feline kidneys are more easily palpable. Subcapsular veins within feline kidneys; Large veins on cortical surfaces. Ureters: Left Ureter Right Ureter Urogram (dog): 2,2’: kidneys 3: ureters 4: urinary bladder Dyce Fig. 14-17 Urinary bladder: Ureter Body Body Ureteral orifice Trigone vesicae Neck Dorsal view Ventral view Urinary bladder schematic image: Ureter Ureteral orifice Ureter Urethra Ductus deferens Prostatic urethra Pelvic urethra prostate Prostatic urethra Colliculus seminalis (seminal hillock) Ureter Ductus deferens Urinary bladder Structures arising from the dorsal and ventral mesenteries • • Dorsal mesentery – Dorsal mesogastrium (greater omentum) – Mesoduodenum – Mesojejunum – Mesoileum – Mesocolon – Mesorectum Ventral mesentery – Ventral mesogastrium (lesser omentum) – Falciform ligament – Median ligament of the bladder Fetal circulation: Umbilical arteries become the Round ligg. (teres) associated with lateral ligg. of the urinary bladder in adults Umbilical vein become the Round lig. (teres) associated with falciform lig. of liver in adults Ligaments of the urinary bladder Median ligament Left Lateral ligament Note: the right lateral lig. is not represented Urethra Male Female Prostatic urethra Pelvic urethra Spongy (penile) urethra Urethra Dorsal sectional cut through entire dog cadaver: Prostatic urethra (magnified) Prostate gland of male dog: K9 prostate with normal gross anatomy K9 prostate with abnormal gross anatomy