Urinary Elimination Flashcards
How many nephrons in each kidney?
1 million
How often does the entire body’s blood volume pass through the kidneys?
Every 30 mins
Network of blood vessels in Kidney
Glomerulus
Surrounds Glomerulus where urine formation begins
Bowman’s capsule
Passageways that absorb & release fluids and electrolytes and permit urine to flow
Tubules, Loop of Henley & Collecting Duct
Helps in the movement of urine to the Bladder
Peristalsis
Valve exists between
the Bladder and the ureter
Smooth muscle tubes that serve as passageways for urine to flow from the kidneys to the Bladder
Ureters
There are three layers of smooth muscle which are collectively called
the detrusor muscle
It is a hollow smooth muscle that lies behind the symphysis pubis when empty.
Bladder
Normal urinary output is
1200 to 1500 cc’s a day
Urine Formation:
Filtration occurs in the
glomerulus
Urine Formation:
Reabsorption occurs in the
tubules
Urine Formation:
Secretion occurs in the
tubules
The process of excreting urine form the body
Micturition
The bladder must contain 250-400ml of urine, causing the bladder muscles to be stretch sufficiently to achieve the sensation to void
Micturition Reflex
BPH
Benign prostatic hyperplasia
Hydro nephrosis
Water in the kidneys (causes kidney damage)
Urine is comprised of Approx.
95% water and 5% wastes
How much of what is filtered is reabsorbed?
99%