Urinary System Anatomy 1 Flashcards
What cells release renin in response to low sodium?
Juxtaglomerular cells
Where are these cells found within the kidney?
Juxtaglomerular apparatus
What is the pathway for blood through the kidney?
Abdominal aorta –> renal arteries –> interlobar arteries –> arcuate arteries –> interlobular arteries –> afferent arteriole –> efferent arteriole –> stellate veins –> interlobular veins –> arcuate veins –> interlobar veins –> renal veins –> inferior vena cava
What is the flow of filtrate through the nephron?
Glomerulus –> Bowman’s capsule –> proximal tubular –> loop of Henle –> distal tubule –> collecting duct –> renal pelvis
What is the muscle of the bladder?
Detrusor muscle
What is the trigone?
The 2 ureteric orifices
The opening for the urethra
What rib bisects the kidney?
Rib 12
The kidneys are located between which spinal levels?
T11 - L3
What nerve controls the voluntary external urethral sphincter?
Pudendal nerve S2,3,4
What effect does sympathetics have on the bladder?
Relax the detrusor muscle
Activate the internal sphincter (i.e. close it off)
What effect does parasympathetics have on the bladder?
Contracts the detrusor muscle
Inhibits/relaxes the internal sphincter
Where does the bladder get its blood supply?
Internal iliac artery
