BIOL Urinary System

What are the general functions of the kidneys?

filters blood

forms urine

removes waste

hormone secretion

What are the organs of the urinary system?

Kidneys

Ureters

Urinary bladder

Urethra

What does the ureters and urethra do?

transports urine

What does the bladder do?

stores and expells urine

Describe the system of vessels that supplies blood to the kidney.

What is the function of the nephron?

each nephron is a site of urine production

3 major steps in urine formation.

Filtration

Tubular reabsorption

Tubular secretion

Glomerular Filtration

movement of substances form glomerulus into the glomerular capsule

Tubular Reabsorption

transfer of filtered substances from renal tubules to peritubular capillaries

Tubular Secretion

transfer of certain substances from peritubular capillaries to renal tubules

Where does filtration happen?

from the glomerulus to the glomerulus capsule (Bowman’s capsule)

What are maculadensa???

Ureters

tubular organs

each begins as renal pelvis in kidney

has a muscular layer to move things down

peristaltic waves transport urine along the ureters