Chapter 48 Flashcards
Primary regulators of fluid and acid-base balance; right is slightly lower than left due to liver; 1,200 ml of blood passes through every minute; each contains approx. 1 million nephrons; produce 60ml of urine per hour (1,500ml daily)
The Kidneys
The functionary units of the kidneys
The Nephrons
A tuft of capillaries surrounded by the bowman capsule
Glomerulus
Glucose and other solutes are absorbed in the _________
Loop of Henle
Site of water and electrolyte reabsorption
Proximal convoluted tubule
Site of additional water and sodium reabsorption
Distal convoluted tubule
In adults, the ureters range from ____ to ____ in length and about ______ in diameter
25 to 30cm; 1.25cm
Backflow
Reflux
Hollow, muscular organ which serves as a urine reservoir; normal capacity ranges from 300 to 600 ml
Urinary Bladder
Smooth muscle layers of the bladder; allow bladder to expand and contract
Detrusor muscle
Triangular area marked by ureter openings
Trigone
Openings
Meatus
The urethra is between ___ and ___ cm for women and _____ cm for men
3, 4; 20
Stretch receptors are stimulated when there is ____ to _____ ml of urine present in adult bladders and _____ to _____ ml in children
250, 450; 50, 200
Urine output increases to 250 to 500ml a day during first year; may urinate as often as 20 times daily; born without urinary control
Infants
Take responsibility for independent toileting
Preschoolers
Kidneys double in size between ages 5 and 10; urinates 6 to 10 times daily;
School-Age Children
Involuntary passing of urine
Enuresis
Involuntary passing of urine during sleep
Nocturnal Enuresis
True or False Excretory function of the kidneys diminishes with age
True