HUBS1404 Lecture Notes - Lecture 19: Renal Pelvis, Interlobular Arteries, Renal Corpuscle

• School: University of Newcastle
• Department: Human Biosciences
• Course: HUBS1404
• Professor: Karen Mate

Document Summary

Outer capsule (cid:272)orte(cid:454) (cid:373)edulla (cid:894)(cid:373)iddle(cid:895) (cid:373)ade of p(cid:455)ra(cid:373)ids uri(cid:374)e drai(cid:374)s i(cid:374)to re(cid:374)al pel(cid:448)is (cid:449)hi(cid:272)h exits alongside renal artery and vein. Renal blood supply: kidneys receive ~25% cardiac output (1. 2l/min, 5 segmental arteries. Interlobular arteries: arcuate arteries - medulla-cortex boundary (turn around the corner, cortical radiate arteries (90% renal blood flow, afferent arterioles (nephrons, veins - sequence reversal above. Renal innervation: renal plexus, network of autonomic fibres and ganglia (primary sympathetic) mainly vasomotor fibres. Sympathetic - inhibits kidney function in times of stress - constriction of renal arteries- reduces glomerular filtration. If under strong sympathetic control for a long period of time - can damage the kid(cid:374)e(cid:455)s (cid:271)e(cid:272)ause of re(cid:374)al (cid:271)lood flo(cid:449: ^ renin production, major influence over urine production, stimulation of renin release (ras) What we urinate is the product of 3 basic processes: filtration, reabsorption, secretion. Collected in collecting ducts - each attached to several nephrons into the renal pelvis (via minor and major calyxes)