Abdominal Urology, Endocrinology & Andrology Flashcards
Kidneys: Location
- Posterior to the abdominal cavity
- Level of T12-L3
- Right kidney lower than the Left
Structures that are Posterior to the Kidneys:
- Quadratus Lumborum M
- Psoas muscles
Kidneys: Intraperitoneal or Retroperitoneal?
Retroperitoneal
Kidneys: Innervation
- Least Splanchnic N
- Posterior Vagal Trunk via the Renal Plexus from the Aorticorenal Ganglion
Right Kidney is associated with:
- Liver
- Duodenum
- Ascending Colon
Left Kidney is associated with:
- Stomach
- Spleen
- Pancreas
- Jejunum
- Descending Colon
Renal Capsule
Fibrous outer covering of the Kidney
Perinephric Fat (Perirenal Fat Capsule)
- Layer of fat that lies immediately outside the kidney capsule
- Surrounds the kidney, suprarenal glands, and the structures entering the kidney via the renal hilum
- Enters renal sinus
Renal Fascia (Gerota Fascia)
- Fascial layer surrounding the perinephric fat
- Covers the suprarenal glands, and the nuerovasculature entering the renal hilum; continues down the ureter
Superior aspect of the Renal Fascia attaches to the:
Diaphragm
Paranephric Fat (Paranephric Body)
- Most superficial layer of fat around the kidney
- This layer is enclosed by the fascia of the surrounding muscles
- Aids in stabilizing the kidneys
Renal Blood Supply comes from the ___ ___ and returns to the ___ ___ ___
- Abdominal Aorta
- IVC
Renal Artery
From renal aorta
Segmental Artery
- First branching point of renal artery
- Feed the superior, anterosuperior, anteroinferior, inferior and posterior renal segments
Interlobar Artery
Found in the renal columns within the medulla
Arcuate Artery
Curves around the top of the renal pyramids
Cortical Radiate Artery (Interlobular Artery)
Runs into the cortex towards the medulla
Cortical Radiate Vein
Runs from the cortex
Arcuate Vein
Curves around the top of the Renal Pyramid
Interlobar Vein
Runs within the column
Interlobar Veins join to form the:
Renal Vein
Renal Vein
Travel to the IVC
Which Renal Vein is longer?
Left
The Left Renal Vein also receives input from:
Left Gonadal Vein
Renal Hilum (Hilus)
- Notch-like structure on the medial aspect of the kidney
- Where the neurovasculature and ureter for the kidney enters/exits (Renal V, Renal A, Renal Lymphatic Vessel, Nerves to Kidneys)
Renal Sinus
- Area surrounding the hilum inside the kidney
- Often filled with fat, an extension of the perinephric fat layer
Renal Cortex
- Outer layer of the kidney that is deep into the renal capsule
- Runs around the edge of the kidney
- Contains the renal corpuscles
Renal Column
Extension of the renal cortex into the medulla
Renal Lobe
Renal Pyramid plus surrounding Renal Columns
Renal Medulla
- Inner part of the kidney
- Within this area is the renal columns and pyramids
- Surrounds the renal sinus and urine-collecting structures
Renal Pyramid (Medullary Pyramid)
- Part of the renal medulla that contains the nephron tubules for filtration and collecting ducts for urine
- Located between the columns
Renal Papilla
- Tip of the renal pyramid
- Allows urine created by the renal pyramid to drain from it into the minor calyx
Minor Calyx
Funnel-like structures that surround the renal papilla and collect urine from it
Major Calyx
- Part of the urine collecting system
- Created when the minor calyxes merge
Renal Pelvis
- Created when the Major Calyxes merge
- Extends out from the kidney at the hilum and transitions into the ureter
- Allows the urine created by the kidney to leave the kidney
Ureter
- Retroperitoneal
- Muscular duct that comes off the renal pelvis and begins the urinary tract
- Runs inferiorly passing over the pelvic brim around the level of the Common Iliac Bifurcation, then follows the lateral pelvic wall to enter the urinary bladder at an oblique angle
In males, the ureter runs behind the:
Ductus Deferens
In females, the ureter runs behind the:
Uterine Artery
3 Locations of Ureteric Constrictions:
(1) Ureteropelvic Junction (junction of ureter with renal pelvis)
(2) Crossing the Pelvic Brim
(3) Ureterovesical Junction (where ureter enters urinary bladder)
Vascular Supply of Ureters:
- Renal A
- Gonadal A
- Aortic Vessels
Suprarenal Gland (Adrenal Gland)
- Located superior to the kidney, lying between the kidney and the diaphragm
- Surrounded by Perinephric Fat and Renal Fascia
Right Suprarenal Gland is associated with:
- Right Crus of the Diaphragm
- IVC
Left Suprarenal Gland is associated with:
- Left Crus of the Diaphragm
- Spleen
- Stomach
- Pancreas
Suprarenal Cortex
- Outer part of the suprarenal gland
- Secretes corticosteroids and androgens
Suprarenal Medulla
- Inner part of the suprarenal gland
- Has a strong sympathetic nervous tissue component
- Releases hormones via presynaptic neural activation for the sympathetic response activation
Suprarenal Cortex is embryonically derived from:
Mesoderm