Anatomy
Nephron
Urine Formation
Hormones
Clinical Concepts
100

This structure is the narrow tube that carries urine from the kidney to the bladder.

Ureter

100

Functional unit of the kidney.

Nephron

100

First step of urine formation.

Filtration

100

A hormone known as the “water-retaining hormone.”

Antidiuretic hormone (ADH)

100

Excessive urination

Polyuria

200

The kidneys are located behind the peritoneum and are described as this.

Retroperitoneal

200

Blood filtration begins here.

Glomerulus

200

Movement of substances from tubules back to blood.

Reabsorption

200

This hormone promotes sodium retention.

Aldosterone

200

Reduced urine output

Oliguria

300

This outer layer of the kidney is often compared to tree bark.

Renal cortex

300

Most water and glucose are reabsorbed here.

Proximal convoluted tubule (PCT)

300

Movement of substances from blood into filtrate.

Secretion

300

Hormone that increases urine output by promoting sodium loss.

Atrial Natriuretic Peptide Hormone (ANH)

300

Absence of urine.

Anuria

400

This smooth triangular area of the bladder lacks rugae.

Trigone

400

This loop creates an osmotic gradient to concentrate urine.

Loop of Henle

400

Normal GFR produces about this much filtrate per day.

180 liters/day

400

Enzyme released by the JG cells when blood volume is low.

Renin

400

Pain caused by a kidney stone

Renal colic

500

The external opening of the urethra is called this.

Urinary meatus

500

These nephrons are primarily responsible for concentrating urine.

Juxtamedullary nephrons

500

This membrane allows water and small solutes through but blocks blood cells.

Glomerular-capsular membrane

500

This system regulates blood pressure and fluid balance.

Renin-angiotensin-aldosterone system (RAAS)

500

Involuntary urine loss with coughing or sneezing

Stress incontinence

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