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Flashcards in Urinary System Deck (85)
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1

Primary Function of Urinary System

Excretion-removal of organic waste products from bodily fluids
Elimination- discharge of these waste products into environment of body
Homeostatic regulation- regulates the volume and solute concentration of blood plasma

2

Secondary Functions of Urinary System

Regulates blood volume and blood pressure
Regulates concentrations of Na+, K+, CI-
Stabilizes blood pH
Conserves valuable nutrients
Detoxifies poisons or drug breakdown

3

Located on both sides of vertebral column between T12-L3 and produces urine

Kidneys

4

The tube or vessel that carries urine from kidneys to bladder

ureter

5

Carries urine to exterior of body

urethra

6

Kidney has 3 layers of connective tissue

renal capsule
adipose tissue
renal fascia

7

layered collagen fibers that cover outer surface of organ

renal capsule

8

thick layer of adipose tissue that surrounds renal capsule

adipose capsule

9

has a dense fibrous outer layer that attaches to kidney to surrounding structures

renal fascia

10

Kidney has 2 layers

Renal cortex
Renal medulla

11

superficial portion of kidney that contacts renal capsule

renal cortex

12

consists of 6-18 renal pyramids

renal medulla

13

a ________ consists of a _________ , the overlying area of the renal cortex and the adjacent tissue of renal column

renal lobe; renal pyramid

14

in the cortex of each ________ are tubular structures called nephrons

renal lobe

15

a ______ is the basic functional unit of a kidney

nephron

16

each kidney has ______ nephrons

1.25 million

17

kidneys receive _______ % of total cardiac output with 1200 ml of blood flowing through each minute

20-25%

18

A nephron has how many parts?

2
Renal Corpuscle
Renal Tubule

19

the glomerulus and bowman's capsule are a part of?

renal corpuscle

20

the proximal convoluted tubule, Loop of Henle, distal convoluted tubule, collecting system are a part of what?

renal tubule

21

The Loop of Henle contains what?

Thin Descending Limb
Thick Ascending Limb

22

The Collecting System contains what?

Collecting Duct
Papillary Duct

23

_________ is approximately 50 intertwining capillaries and projects into bowman's capsule

glomerulus

24

the site where filtration occurs

renal corpuscle

25

Blood pressure forces water from the blood vessel along with dissolved solutes (filtrate) into the ____________

capsular space

26

at __________, the capillaries are covered by epithelia tissue consisting of large cells called podocytes

bowman's capsule

27

______ are large cells that have feet called ______

podocytes; pedicels

28

these contract/relax to control capillary diameter and blood flow rate

mesangial cells

29

Filtrate passes through small slits between ________ to get into __________

pedicels; capsular space

30

when filtrate enters the renal tubule is becomes...

tubular fluid (future urine)