Excretory/Urinary Systems/Metabolic Waste/Structures of Urinary System/Parts of Kidney/Nephrons

State the 4 organs of the excretory system .i

1. Lungs

2. Liver

3. Skin

4. Kidney

State the 4 organs of the urinary system .i

1. Kidneys

2. Bladder

3. Ureters

4. Urethra

What are the 2 functions if the urinary system ?i

1. Controls the amount of fluid in the body and what substances are found in this fluid

2. Removes metabolic waste and keeps useful molecules

What is metabolic waste ?i

Metabolic waste include compounds that are made in our bodies that need to be removed .i

Give 3 examples of metabolic waste .i

1. Carbon dioxide

2. Sodium ions

3. Metabolic waste containing nitrogen (ammonia, urea, uric acid) .i

Why does metabolic waste need to be removed ?i

It will get toxic if built up .i

Is the removal of feces considered metabolic waste ?i

No .i

What are the 4 structures of the urinary system ?i

1. Kidneys

2. Ureters

3. Bladder

4. Urethra

What do kidneys do (1) ?i

Kidneys form urine .i

What do ureters do (1) ?i

Ureters move urine from kidneys to the bladder .i

What does the bladder do (1) ?i

The bladder stores urine .i

What does the urethra do (1) ?i

The urethra releases urine .i

What are the 3 parts of the kidney ?ii

1. Renal cortex

2. Renal medulla

3. Renal pelvis

State 2 facts about the renal cortex .ii

1. Outer region of kidney

2. Contains part of each nephron

State 2 facts about the renal medulla .ii

1. Middle region of kidney

2. Contains the remaining part of each nephron

State 2 facts about the renal pelvis .ii

1. Inner region

2. Collects urine from the nephrons

What are nephrons (1) ?i

Nephrons are tiny, microscopic tubules .i

Where are nephrons located ?i

Nephrons are located at the renal medulla and renal cortex .i

What is fluid in the nephrons called ?i

Filtrate