Module 3 and Module 4 Flashcards
(512 cards)
major role of the urinary system
MAINTAIN HOMEOSTASIS BY MAINTAINING FLUID COMPOSITION AND VOLUME
components of the urinary system (KUUU)
○ Kidneys
○ Ureters
○ Urinary bladder
○ Urethra
Functions of kidneys
○ Maintaining overall fluid balance
○ Regulating and filtering minerals from the blood
○ Filtering food and waste materials and toxic substances
○ Creation of hormones that helps in the production of red blood cells
○ Promote bone health
○ Regulate blood pressure
functional units of kidneys
nephrons
what nephrons do in the kidneys
Nephrons aid in the formation of urine
Amount of blood flows in the kidneys and its percentage in the cardiac output
About 1200 ml of blood flows to the kidney per minute, which is 20-25% of the cardiac output
Through the formation of urine, what kidneys do?
Through the formation of urine, the kidneys remove waste products from the blood, regulate fluid volume, maintain electrolyte concentration, blood pressure, and pH within the body
Paired muscular docks with narrow lumina which carry the urine from the kidneys to the bladder
URETERS
Measurement of two small tubes in the ureters
Two small tubes about 25 cm long
Enumerate the three layers in the ureters
○ Outer layer (Fibrous coat)
○ Middle layer (Muscular coat)
○ Inner layer (Mucosa)
supporting layer of fibrous connective
tissue
Outer layer (Fibrous coat)
inner circular and outer longitudinal smooth
muscle
Middle layer (Muscular coat)
Define Inner layer (Mucosa)
made up transitional epithelium that is continuous
with the lining of the renal pelvis and
urinary bladder
Main function of the middle layer (muscular coat)
Main function is peristalsis which
helps in propelling in the release
of the urine
Purpose of mucus that secretes in the inner layer (mucosa)
This layer secretes mucus which
coats and protects the surface
the cells
Transport the urine from the _____ to the urinary
bladder
pelvis
this structure prevents the reflux of urine as the
bladder contracts
ureters
Serves as temporary storage reservoir for urine
THE URINARY BLADDER
Location of the urinary bladder
Located in the pelvic cavity
Size of urinary bladder
Its size varies with the amount of urine it contains
and with the pressure it receives from the
surrounding organ
Amount of urine that urinary bladder can hold
Can hold up to 1000 ml of urine
Tube that drains the urine from the bladder out of
the body
THE URETHRA
The passageway of the urine into the external
environment
THE URETHRA
Size of the urethra
● Female: 1 ½ ( cm long) to 2 ½ inches, ending at
the vulva or the external female genital organ
● Male: 5 ½ to 6 ½ inches up to 8 inches (20 cm) in
length , ending at the tip of the penis