respiratory system. discover activity page 112 respiratory system gases what do you already know...
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Respiratory System
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Discover ActivityPage 112
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Respiratory System Gases What do you already know about the
Function of Respiratory System? What gases are exchanged by the
respiratory system? What do you think happens in the
body when a person holds his or her breath?
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Respiratory System Function Respiration
to obtain and use oxygen to get rid of carbon
dioxide and water
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Respiratory System 2 parts
Breathing moving air in
and out Cellular Respiration
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Cellular Respiration C6H12O6 + O2
CO2 + H2O + ATP Glucose and oxygen makes
carbon dioxide, water and energy Happens in the Mitochondria of
the Cell
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Working Together Respiratory system,
Digestive system and Circulatory system
page 114
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How Lungs Work.
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Air Flow through the System
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Process of Breathing Inhalation
Lung volume increases Diaphragm contracts/flattens Ribcage moves up and out Air flows in
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Process of Breathing Exhalation
Lung volume decreases Diaphragm relaxes/moves upward Ribcage back to normal position Air flows out
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Breathing and Speaking Larynx
Voice box Located at top of trachea
Vocal cords Air rushes through opening Vibration creates sound
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Smoking and Your Health
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Three major chemicals Tar Carbon Monoxide Nicotine
addictive chemical
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Three major chemicals Tar
Dark sticky substance that forms when tobacco burns
Makes cilia clump together so they can’t prevent harmful material from getting to lungs
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Three major chemicals Carbon Monoxide
Colorless, odorless gas Binds to hemoglobin in
RBC’s and takes the place of oxygen so body can’t get enough oxygen
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Three major chemicals Nicotine
Addictive chemical Increases heart beat and blood
pressure Increases activities of the
Nervous system
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Effects of Nicotine on the Body
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Four Respiratory Problems Chronic Bronchitis Emphysema Lung Cancer Atherosclerosis
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Emphysema Caused by
chemicals in Tobacco smoke
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Affects on Blood Vessels Chemicals in blood are
absorbed by vessels Walls get irritated Irritation contributes to
atherosclerosis
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Passive Smoking Inhaling side-stream smoke Side-stream Smoke
smoke that enters the environment from burning tobacco
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Mainstream smoke smoke that is inhaled
directly into the mouth through a cigarette, pipe, or cigar
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Smokeless Tobacco Chewing Tobacco
Cancer of the mouth (tongue, cheek, gums)
Cancer of the throat
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Why do people start Peer Influence Parent Example Advertising Others?
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Four reasons not to start Dangerous (unhealthy) Expensive Unpleasant odor Unattractive
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Case Study #2You are at the mall and are offered free cigarettes. Your friends want to try them. Use the 5 C’s to make a choice about whether you will join them or abstain.
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Breathing Emergencies Help someone who is
Choking or do
Rescue Breathing
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Help someone who is Choking Place thumb side of fist against
middle of abdomen just above navel. Grasp fist with other hand. Give quick, upward, thrusts. Repeat until object is coughed up or
person becomes unconscious.
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Rescue Breathing
If air won’t go in?
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Excretory System
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Function Collects waste produced by
cells Removes the wastes from the
body Excretion
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2 Wastes Water Urea
A chemical that comes from the breakdown of proteins
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Kidneys Filter blood Ureters Bladder Urethra
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Nephrons Tiny filtering factories that
remove wastes form blood and produce urine
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Stages of Urine Formation Wastes and needed materials are
filtered out of blood Most of needed materials are
returned to blood Wastes are eliminated from the
body
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Chemical Analysis Useful? Can detect medical problems
Diabetes = glucose present Improper kidney function=
protein present
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Homeostasis Water More sweat, less drinking Less volume of urine
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Other organs that help Lungs Skin Liver
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Liver function Breaks down waste so it can
be excreted Produces urea by breaking
down proteins Recycling facility