7182769
Description
Mind Map by Jessa Perrin, updated more than 1 year ago
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Created by Jessa Perrin
over 7 years ago
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Urinary System
- Five Major Functions
- Excretion
- Secretion of Hormones
- Balance Electrolytes
- Maintenance of pH
balance
- Regulation of water
content of blood
- Excretion
- Urine Formation
- 1: Glomular Filtration: BP forces
water, gluccose, amino acis, salts,
urea, etc from glomerulus into
bowman's capsule
- 2: Tubular Reabsorption: Diffusion and
Active Transport return water, glucose,
amino acid, salts to blood at proximal
convoluted tubule
- Na actively absorbed, Cl
passively follows
- Na actively absorbed, Cl
passively follows
- 3: Tubular Secretion: Active Transport
moves H+ ions and creatinine from blood
into distal convoluted tubule
- MORE H+ ION secreted = LOWER pH
- MORE H+ ION secreted = LOWER pH
- 1: Glomular Filtration: BP forces
water, gluccose, amino acis, salts,
urea, etc from glomerulus into
bowman's capsule
- Hormonal Regulation of
Water- Salt Balance
- ADH: decreased ADH =
lower water absorption,
lower BP, and higher
urine output
- -produced by hypothalamus (regulated by
thirst receptors), released by pituitary gland,
INCREASED BP = DECREASED urine output
- -produced by hypothalamus (regulated by
thirst receptors), released by pituitary gland,
INCREASED BP = DECREASED urine output
- ANH (atrial natriuretic hormone):
promotes Na+ and water EXCRETION
to DECREASE BP
- Aldosterone:
produced by
adrenal cortex,
REABSORPTION
of Na+ and
water to
INCREASE BP
- ADH: decreased ADH =
lower water absorption,
lower BP, and higher
urine output
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