| A | B |
|---|
| Nasal cavity | Warms and moistens air & filters dust. |
| Trachea | Tube that transports air to the bronchi. |
| Epiglottis | Prevents food from entering the trachea. |
| Alveoli | Oxygen passes into the capillaries that surround these sacs. |
| Lungs | Organ made up of masses of alveoli. |
| Diaphragm | A sheet of muscle across the bottom of the chest cavity. |
| Bronchi | A division of the trachea. |
| Functions (jobs) of the urinary system | Rids blood of wastes; gets rid of excess salt; controls blood volume. |
| Excretory organs of the body | Skin. bladder, kidneys & lungs. |
| What happens when kidneys don't work? | Wastes act as poisons in body; swelling of the ankles and feet. |
| Why is skin an excretory organ? | It gets rid of excess salt & wastes, which pass through it. |
| Why do you see your breath on a cold day? | Water vapor condenses |
| Ureters | Transports urine from the kidneys to the bladder. |
| Nephrons | Filters in the kidneys that remove wastes from blood. |
| Renal artery (Aorta) | Bood enters the kidneys through this. |
| Capillaries | Most of the water, sugar and salt removed by nephrons re-enter the blood through these. |
| Renal vein | Returns purified blood from the kidneys to be circulated. |
| Urethra | Urine from the bladder flows through this and then leaves the body. |
| Bladder | Organ that stores urine from the kidneys until it can be released (through urination). |
| Kidneys | Two bean shaped organs containing filtering units (nephrons). |
| Smoking, coal dust, air pollution | Related to respiratory problems. |
| Asthma, emphysema, chronic bronchitis | Disorders of the respiratory system. |
| Breathing | Process in which air moves in and out of lungs. |
| All of it | Amount of blood that passes through your kidneys each day. |
| Swelling of ankles & feet | Water that is not removed from body tissues causes this. |
| Gas | What is exchanged between capillaries & alveoli in the lungs? |
| About 1 million | Number of nephrons in each kidney. |
| Kidneys, ureters, bladder, urethra | Major organs of the urinary system. |
| Sweat | Water & salts are released in this through skin. |
