Topic 10 The Urinary system_2 KIdneys

Question 1

organ.
retroperitoneal
located b/w T12-L3, partially protected by ribs 11-12
has a renal artery and vein
it gets 20-25% of resting (CO) cardiac output

Answer 1

kidneys

Question 2

def.

outside of peritoneal cavity (abdomen cavity)

Answer 2

peritoneal

Question 3

superficial portion of kidneys

Answer 3

renal cortex

Question 4

inner portion of kidneys

Answer 4

renal medulla

Question 5

the functional unit of a kidney is known as?

Answer 5

nephron

* there are millions of nephrons is a kidney

Question 6

The 3 parts of the nephron

Answer 6

beginning w
proximal convoluted tubule (PCT)
loop of Henle (nephron loop)
distal convoluted tubule (DCT)

Question 7

Urine production and flow (blood flow)

Answer 7

> blood enters the kidneys via renal artery
branches into smaller…vessels
afferent arterioles leads into the glomerulus
@ glomerulus, water and solutes in blood plasma are filtered through the capillary walls
into the glomerular (Bowman’s) capsule space into the renal tubule
blood flows out of the glomerulus into the efferent arteriole
the efferent arteriole leads to another capillary network (peritubular capillaries)
peritubular capillaries merge to ultimately form the renal vein which leaves the kidney

Question 8

What type of process?

@ glomerulus, water and solutes in blood plasma are filtered through the capillary walls

Answer 8

Diffusion

Question 9

The fluid that enters the glomerular (Bowman’s) capsule is called?

Answer 9

glomerular filtrate

* by-product of glomerular

Question 10

As filtered fluid moves along the renal tubule and collecting duct… (T/F)

Most of the water and useful solutes are reabsorbed (90%) and returned to the blood via the peritubular capillaries

Answer 10

True

Question 11

As filtered fluid moves along the renal tubule and collecting duct… (T/F)

Waste are drawn from the peritubular capillaries and are secreted into the fluid for removal from the body

Answer 11

True