Urination Flashcards
What artery brings blood to glomerulus of each nephron
Renal artery
When blood filters through glomerular capillary. Where is it moved to?
Bowmans Capsule
Fluid filtered through the glomerulus is what?
Glomerular filtrate
What is the fluid of the glomerulus made up of?
Water electrolytes and glucose
True or False: Every 30 minutes the total body volume passes through the kidneys?
True
What is the purpose of the ureters
Pass urine from the kidney to the bladder
What nervous system is the bladder associated with?
Autonomic Nervous system
What part of the autonomic system does the bladder control
Sympathetic: Bladder relaxed urine kept in bladder
Parasympathetic: Relaxation of internal sphincter=Urination
Where does reabsorption process for urine?
Proximal tubules, Loop of Henle, Distal tubules into collecting tubules
How much does a person reabsorb fluid?
99%
What molecules does the body not like present?
H+, K+, ammonia, creatinine, uric acid and other metabolites
What does GFR stands for?
Glomerular Filtration Rate
What does GFR do?
Water and dissolved substances are filtered out of the blood and into the kidneys
What is a normal GFR in adults at rest?
125 mL/min from the filtrate removed from the blood
How many layers of muscle tissue is the bladder made up of?
3 layers
Is voiding conscious or unconscious?
Conscious
How often does an adult void?
6-8x a day or every 3-4 hours
How much fluid volume should an individual produce a day?
1200-1500ml/day
When should you be concerned when fluid output is low?
30ml in an hour
how often does newborns void
30-40x a day
Are the kidneys fully developed for newborns?
Reabsorption and filtration are inadequate
True or False: Pink urine may be seen in first void of newborn?
True: due to accumulation of uric acid crystals
what are normal ranges for urine output for lifespans?
Newborn-2 = 500-600 ml 2-5 500-800ml 5-8 600-1200ml 8-14 1000-1500ml 14 and over 1500ml
When does a child have control over voiding?
18-24 mos
Enuresis
Involuntary passing of urine when control should be established (5 you)
Nocturnal enuresis
Bed wettings
Is nocturnal enuresis genetic?
Yes
Are older women more prone to urinary incontinence then men?
Yes 2x greater due to estrogen and weakened pelvic muscles
What are psychological factors affecting urine
Thinking of voiding
running water
pour over thigh - hands in cold/warm water
stress - increase or unable to go
Social - need for privacy, own home, afraid to be wet
What diseases are associated with renal problems?
Congenital urinary Tract abnormalities Polycystic kidney disease UTI Urinary calculi Hypertension DM Gout Connective tissue disorders
Hydronephrosis
Dilation of renal pelvis
What does PKD do?
inherited disorder in which clusters of cysts develop primarily within your kidneys
If there is less than 30 ml of urine for 2 consecutive hours what happens?
Decrease perfusion to vital organs
When does the bladder become flaccid?
Occurs after stroke or spinal injury
When does micturition occur when your bladder is flaccid?
Reflex voiding when slightly stretched
neurogenic bladder fills w/o ability to respond to stretch retention
What does diuretics do to the body?
Prevents reabsorption of water and certain electrolytes in tubles
What does cholinergic meds do to the body?
Stimulate contraction of detrusor muscle, producing urination
Antispasmodics
Muscle relaxation for overactive bladders