Urinary System Flashcards Preview

Biology 101 > Urinary System > Flashcards

Flashcards in Urinary System Deck (16)
1

kidneys

largest most complex organ of the urinary system
bean shaped
located bwtween the peritoneum and the posterior wall of the abdomen
level of T-12 and L-3

2

renal capsule

high vascular
protective outer layer

3

hilum/hilus

medial surface of kidney
concave
enterance of nerves, ureters, and blood vessels

4

cortex

outer region

5

medulla

inner region

6

urine collection process

nephron --> path of urine drainage collecting ducts --> papillary duct in rnal pyramid --> minor calyx --> major calyx --> renal pelvis --> ureter --> bladder

7

afferent arterioles

(into) minute capillaries
supply nephron units with bloddat the glomerulus

8

efferent arterioles

(away) carry filtered blood
forms the peritubular capillaries (also known as the secondary capillary network)

9

nephron

1 million per kidney
functional unit of the kidney

10

medulla

renal pyramids, renal columns, minor calyces, major calyces, renal pelvis

11

renal corpuscle (glomerulus)

smallest part of afferent arteriole
supplies filtrate to bowmans capsule (glomerular/bowmans capsule)

12

renal tubule

proximal convoluted tubule
henles loop/loop of henle/nephron loop
distal convoluted tubule

13

ureters

convey urine to bladder by peristalsis

14

layers of ureter

outer fibrous layer
muscular layer
inner layer
enter trigone posterior and inferior

15

bladder

storage portion of urinary tract
average fluid capacity 700 - 800 mL
posterior to symphisis pubis
male: anterior to rectum, female: anterior to vagina and inferior to uterus
fold in peritoneum hold it in position

16

trigone

triangular are on posterior/inferior surface
three corners formed by ureteral orifices superiorly and urethral orfice inferiorly