Chapter #13Respiration and Excretion

Chapter 13.1 Notes

• Respiratory system is made of body parts that help with the exchange of gases. Brings in oxygen and removes carbon dioxide.

• Cellular respiration is a chemical reaction that happens inside cells.

• C6H12O6 + O2 CO2 + H2O

• Sugar + oxygen makes carbon dioxide + water

Chapter 13.2 NotesRespiratory Organs

1. Nose- has hair that trap dust2. Nasal Chamber- forms

mucus to keep air moist3. Trachea-Windpipe4. Epiglottis- small flap that

covers trachea when you swallow.

5. Bronchi- 2 short tubes that carry air from trachea to the lungs.

6. Lungs- 2 soft organs that exchange gases.

7. Alveoli- are tiny air sacs. Look like grapes (300 million).

Breathing out- ribs in and down. Diaphragm relaxed (up). Lungs squeezed.

Breathing in- ribs up and out. Diaphragm contracted (down). Lungs expand.

Diaphragm sheet like muscle that separates the inside of your chest from your intestines and other organs.

Chapter 13.3 Notes

• Carbon Monoxide (CO) is an odorless, colorless gas sometimes found in the air. It is more easily picked up by your red blood cells than oxygen.

• Pneumonia is a lung disease caused by bacteria or virus. Causes lung tissue to form extra mucus. Communicable or contagious.

• Emphysema is a lung disease that results in the breakdown of alveoli. People with emphysema seems out of breath. Caused by smoking and air pollution. Not communicable.

Chapter 13.4 Notes• Excretory system- is made

up of organs that rid the body of liquid wastes.

• Urea- is a waste that results from the breakdown of body protein.

• Urine waste liquid that reaches the ureter about 1 liter per day.

• Nephron- is a tiny filter unit of the kidney.

• Kidneys- filter blood 200 liters per day

• Ureter is a tube that carries wastes from a kidney to the urinary bladder.

• Urinary bladder- is a sac that stores liquid wastes removed from the kidneys.

• Skin 3 Jobs

1. Protect the body from infection

2. Sense organ

3. Excretion of salt and water

Work Cited• “Respiratory system”. February 25, 2007.

http://www.east-haven.k12.ct.us/eha/system/system/systemangelicat/systemangelicat%5C.htm

• “Excretory system”. February 25, 2007. http://www.tqnyc.org/NYC063547/images/try_excretory_3_good_use.jpg

• “Human respiratory system”. February 25, 2007. http://www.east-haven.k12.ct.us/eha/system/system/systemangelicat/respiratorydetail.gif

• “Breathing”. February 25, 2007. http://www.geocities.com/flutepower55/breathing.gif

• “Emphysema”. February 26, 2007. http://static.howstuffworks.com/gif/emphysema-ga-1.jpg

• “Urinary system”. February 26, 2007. http://www.nurse-prescriber.co.uk/education/visual_lib/pp000urin.jpg

• “Nephron”. February 26, 2007. http://static.howstuffworks.com/gif/kidney-nephron.jpg

• “Skin”. February 26, 2007. http://kidshealth.org/kid/body/images_45364/skin325.gif