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Urinary System
Anatomy
| Question | Answer |
|---|---|
| Retroperitoneal Space | The space anterior to the vertebrae and posterior to the peritoneum |
| Contents in Retroperitoneal Space | Kidneys, Ureters, Suprarenal gland, Aorta, IVC, Sympathetic trunk, and Lymphatic Glands |
| The inferior part of the Left Kidney is found in what level? | L3 |
| The inferior part of the right kidney is found in what level | L4. It is lower than the left kidney because of the liver. |
| What is found anterior of the right kidney | Duodenum, liver, colon |
| What is found anterior of the left kidney | spleen, pancreas, colon |
| Anterior to Posterior: Arteries, Ureter, Veins | Veins, Arteries, Ureter |
| What is found anterior to the right ureter? | Duodenum, ileum, rightcolic and ileocolic vessels, right gonadal vessels, small intestine mesentery (right part) |
| What is found posterior to the right ureter? | Right psoas muscle |
| What is found anterior to the left ureter? | Sigmoid colon, Left colic artery, left gonadal vessels, Inferior mesenteric vein lies medial side of the left ureter |
| What is found posterior to the left ureter? | Right psoas muscle Pelvis: Sacroiliac joint |
| Renal Fascia | Encases the kidneys and attaches to the hilum |
| In perinephric abscesses, what is preventing the spread of pus to the contralateral side? | The attachment of the renal fascia to the hilum. |
| Be able to identify the kidney coverings and the muscles in its vicinity. | Psoas muscle, Psoas sheath, renal fascia, renal capsule, peritoneum, pararenal fat |
| Psoas abscess | Vertebrae--> Psoas sheath --> Psoas abscess |
| What are the 3 constrictions of a ureter | 1. Pelviureteric junction 2. Crossing of pelvic brim 3. Entering in bladder |
| Tributaries: Lt renal vein | Lt. gonadal vein Lt. suprarenal vein |
| Blood supply of the upper 1/3 of ureter | Renal Artery |
| Blood supply of the middle 1/3 of ureter | Lt. testicular or ovarian artery |
| Blood supply of the lower 1/3 of ureter | Superior vesical artery |
| Kidney injury at the cortex | subcapsular hematoma |
| Kidney injury at the cortex and capsule | Hematoma |
| Kidney injury at the renal capsula communicating with renal pelvis | hematuria |
| Kidney injury at the hilum | 1) Ischemia (renal artery) 2) Affects organs supplied by Renal Artery 3) Obstruction Gonadal vein (varcocele) |
| What do you see inside a urinary bladder? | Trigone, urethral opening, and mucosa |
| Sympathetic innervation to the bladder | hypogastric plexus |
| Parasympathetic innervation to the bladder | Pelvic splanchnic |
| Parasympathetic action: Bladder | Contraction of bladder muscle and inhibition (relaxation) of sphinter and vesicae (micturation) |
| Sympathetic Action: Bladder | Inhibits contraction, stimulate closure of sphincter, vesicae, ejaculation |
| Neurovascular Supply of Bladder: Parasympathetic | 1) Motor to the detrusor muscle 2) Parasympathetic stimulation contraction of the detrusor muscle 3) Relaxation of the internal urethral sphincter-micturition |
| Neurovascular Supply of Bladder | 1) Contraction of internal sphincter 2) Ejaculation of semen in and prevent reflux of semen into bladder |
| Lymphatic drainage: Superior Part of Bladder | External Iliac lymph node |
| Lymphatic drainage: Inferior Part of Bladder | Internal Iliac lymph node |
| Lymphatic drainage: Neck of the Bladder | Common Iliac nodes or sacral lymph node |