Card Set Information
Respiration and Excretion
What are the functions of the Respiratory System?
1. Moves oxygen from the outside into the body
2. Moves carbon dioxide and water from the body
the process of respiration in cells
Glucose is broken down using oxygen to produce energy.
Movement of hair into and out of lungs.
What other 2 systems aid in
Digestive system-absorbs glucose from food
Circulatory system-carries oxygen from your lungs and glucose from your food to your cells
Is air oxygen?
Only 21% is air and the rest is nitregin.
What are the three substances in a cigerette?
The path air takes to the lungs...
What does the
It helps remove the trapped
the air you breath in.
Air moves from nose into throat which is also used for food.
Leads from the pharinx to the lungs
Rings of cartlige keep it open
Epiglottis keeps food from getting into the tracea
Air enters alviolis
Oxygen passes through the wall of the aviolis
And then through the capillary wall into the blood
Carbin Dioxide and water pass from the blood into the avioli.
The structure of the bronci...
The bronchi directs air into the lungs
It divides into smaller tubes like tree branches
At the end of the tubes are alveoli, which look like grapes
Part of each bronchus is outside the lung and part is inside
Tiny sacs of lung tissue specialized for the movement of gases between air and blood. They are surrounded by capillaries where the blood picks up oxygen from the air.
How can lungs absorb a large amount of oxygen?
Large surface area of alveoli. 300 million in an adult
What muscles cause the chest to expand while breathing?
The Rib Muscles
What produces your voice?
2 vocal cords in your larninx
When the vocal cords vibrite
Why does air rush into your body when you inhale?
The chest cavity becomes larger making more room for air and decreasing the air pressure inside the lungs. Because of the difference in air pressure, air rushes into your chest.
Where and why do coughs and sneezes occur?
Sneezes occur in the nose
Coughs occur in the trachea
They act to remove irritating paricles
Harmful effects of smoking
Increase in breathing and heart rate due to carbon monoxide in smoke
Damage to protetctive cilia and risk of cancer due to tar
Addiction and increase in blood pressure due to nicotine
Risk of chronic bronchitis, emphysema, lung cancer and atherosclerosis
Deadly chemicals in tobacco
3 Respiratory diseases from smoking
Chronic bronchitis - irritation of breathing passages
Emphysema - destroys lung tissue, cannot get enough oxygen or eliminate enough carbon dioxide
Lung cancer - chemicals cause tumors
Circulatory problems due to smoking
Atherosclerosis - chemicals get into blood vessels and cause buildup
Smokers are twice as likely to have a heart attack
If either the circulatory or respiratory system is damaged, the other one has to work even harder.
Causes respiratory problems from breathing in smoke from other people.
What does the excretory system do?
Collects waste produced by cells and removes the wastes from the body.
Helps maintain homeostasis by removing harmful materials that would make you sick if they stay in the body.
3 wastes your body must eliminate
Urea - peeeeee!
Path of excretory system
What are the structures that remove waste in the kidneys?
Nephrons - filter the blood
How is urine formed?
Waste and glucose are removed from blood
Glucose is returned to blood
Wastes move into capsule
Urine remains in the capsule
How do kidneys help maintain homeostasis?
Regulate amount of water in your body
What other organs are involved in excretion?
Skin - sweat
Lungs - exhale Carbon dioxide and water
Liver - breaks down proteins