Urinary System 3

Helpfulness: 0
Set Details Share
created 8 years ago by Darlenejmnz
200 views
updated 8 years ago by Darlenejmnz
Grade levels:
College: First year, College: Second year, College: Third year, College: Fourth year
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

Tubular secretion

1. Excretes unfiltered drugs, such as penicillin and phenobarbital

2. Excretes reabsorbed wastes, such as urea

3. When blood pH is too low, tubular secretion maintains blood acid-base balance by moving the excess H+ in the blood to the filtrate to be excreted in the urine.

2

What is the fluid exiting the nephrons is called?

Urine!

3

Can you trace a drop of this fluid from a nephron to the external environment? (8 answers)

collecting duct
papillary duct
minor calyx
major calyx
renal pelvis
ureter
urinary bladder
urethra

4

Trigone

-made up of the ureteric orifices and urethral orifices

-ureteric orifices- opening of ureters in bladder

-urethral orifice- opening in the urethra

5

What can you tell me about the peritoneum of the bladder?

-it is parietal peritoneum

-sits on top of the bladder

6

Urinary bladder tissue layers (deep to superficial)

1. Mucosa
-transitional epithelial lining
-lamina propria (areolar CT)

2. Muscularis externa (Detrusor muscle)

3. Adventitia

7

What kind of tissue are the internal and external urethral sphincter composed of?

-Internal urethral sphincter- smooth muscle

-External urethral sphincter- skeletal muscle

8

Urogenital diaphragm (membrane)

-sheet of skeletal muscle on the pelvic floor

9

What regions do a male urethra have that a female urethra does not?

-prostatic urethra
-membranous urethra
-spongy urethra

10

Antidiuretic hormone (ADH)

-regulates urine production (main)

-released by the pituitary gland

-decreases urine production

-Makes epithelial cells of DCT and collecting duct more permeable, resulting in increased water reabsorption

11

Aldosterone

-regulates urine production

-secreted by the adrenal glands

-decreases urine production

-Increases tubular reabsorption of Na+ , which in turn causes more water to be reabsorbed (because water follows salt).

12

Trace:
Large plasma protein

renal/segmental/interlobar/arcuate/cortical radiate
afferent a.
glomerulus
efferent a.
peritubular capillaries
peritubular venules
cortical radiate/arcuate/interlobar/renal v.

13

Trace:
Glucose molecule

renal/segmental/interlobar/arcuate/cortical radiate
afferent arteriole
glomerulus
filtration membrane
glomerular capsule
PCT
reabsorbtion-secretion membrane
peritubular capillaries
peritubular venules
cortical radiate/arcuate/interlobar/renal v.

14

Trace:
One of the 50% of the urea molecules that is not reabsorbed

renal/segmental/interlobar/arcuate/cortical radiate
afferent arteriole
glomerulus
filtration membrane
glomerular capsule
PCT
loop of henle
DCT
collecting ducts
papillary duct
minor calyx
major calyx
renal pelvis
ureter

15

Trace:
An excess H+ that escapes filtration

renal/segmental/interlobar/arcuate/cortical radiate
afferent arteriole
glomerulus
efferent arteriole
peritubular capillaries
DCT
reabsorption-secretion membrane
collectings duct
papillary duct
minor calyx
major calyx
renal pelvis
ureter

16

If it is not filtered...

If it is filtered...

If it is not filtered it goes to the efferent arteriole.

If it is filtered it goes to the filtration membrane.