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Gross Anatomy 2 - Kidneys

Kidneys located T2-L3; higher on left
hilum L1
anterior to posterior renal v., renal a., renal pelvis
kidney surrounded by fat & fascia for protection
from surface outward renal capsule, perirenal fat, renal fascia, pararenal fat
kidney functions detoxification, regulation of water volume & blood pressure (angiotensin)
internal structure made up of cortex & medulla & duct system for drainage
Medulla formed by triangular structures: pyramids
Cortex extends btwn. pyramids called renal columns
Tip of ea. pyramid - papilla - urine is released minor calix
several minor calyses drain into major calix
3 major calyses form renal pelvis
Lesser splanchnic n synapse in aorticorenal ganglis & join reanl plexus on renal a.
least splanchnic n. goes directly to renal a. & synapse with diffuse ganglion cells
Additional contribution from L1 & L2
Kidneys receive no extrinsic parasympathetic innervation but contain modified epithelial cells which produce acetylcholine
Created by: JYarger