science ch 1d study guide. lesson 1- how does your body take in oxygen about _____ of the air that...
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![Page 1: Science Ch 1D Study Guide. Lesson 1- How does your body take in oxygen About _____ of the air that you breathe in is a gas called _____. –1/5 –oxygen](https://reader030.vdocuments.us/reader030/viewer/2022032723/56649cfe5503460f949ce1b5/html5/thumbnails/1.jpg)
Science Ch 1D
Study Guide
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Lesson 1- How does your body take in oxygen
• About _____ of the air that you breathe in is a gas called _____.– 1/5– oxygen
• As your cells _____, they make a gas called _____. This gas leaves your body as a waste when you _____.– Work– Carbon dioxide– Breathe out
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Lesson 1- How does your body take in oxygen
• The respiratory system includes your _____, your _____, and the _____ that connect them. – Nose– Lungs– Tubes
• Air enters the body through the _____, which has the job of getting the air ready for the _____– Nose– Lungs
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Lesson 1- How does your body take in oxygen
• The nose’s lining makes a sticky liquid called _____ which adds _____ to the air. – Mucus– Moisture
• Mucus and tiny hairs inside the nose also _____ _____ from the air.– Trap dust
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Lesson 1- How does your body take in oxygen
• Another name for the windpipe is the _____, which divides into 2 _____ _____.– Trachea– Bronchial tubes
• When you breathe in, you _____.– Inhale
• When you breathe out, you _____.– Exhale
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Lesson 1- How does your body take in oxygen
• Inhaled air, which is rich in _____, enters the air sacs. – Oxygen
• An exchange of _____ and _____ takes place in the _____. – Oxygen– Carbon dioxide– Air sacs
• Now red blood cells have oxygen to deliver to _____– Body cells
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Lesson 1- How does your body take in oxygen
• Carbon dioxide leaves your body when you _____.– Exhale
• The large muscle below your lungs that allows you to breathe is the _____.– Diaphragm
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Lesson 2 – How does your body use oxygen
• When red blood cells are carrying oxygen, they are _____. – Bright red
• After red blood cells give up their oxygen, they become dark, dull and _____.– purplish
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Lesson 2 – How does your body use oxygen
• Capillaries are tiny _____ with thin walls through which _____, _____, and _____ pass. – Blood vessels– Oxygen– Nutrients– Waste
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Lesson 2 – How does your body use oxygen
• Capillaries are so narrow that _____ have to move through them in _____ _____.– Red blood cells– Single file
• Blood flows from the _____into blood vessels called _____, which carry the blood to your ____.– Capillaries– Veins– Heart
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Lesson 2 – How does your body use oxygen
• Almost all living things need _____ to stay alive as well as _____.– Oxygen– Food
• Your digestive system changes food into nourishing substances called _____. – Nutrients
• Like red blood cells, nutrients are carried by _____.– Plasma
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Lesson 2 – How does your body use oxygen
• Cells use _____ to break the sugar down into _____ and _____. – Oxygen– Carbon dioxide – Water
• When your cells break down sugar, they release _____. – Energy
• All of the _____ that your body needs is made this way.– Energy
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Lesson 2 – How does your body use oxygen
• Cells use energy to _____, to _____, and to _____.– Grow– Divide– Repair damage
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Lesson 3 – How does your body get rid of cell waste
• Your body gets rid of, or _____, cell waste.– Excretes
• Your _____ does most of this work with some help from your _____ and _____.– Excretory system– Lungs– Skin
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Lesson 3 – How does your body get rid of cell waste
• Your body cells constantly produce _____.– Cell wastes
• This waste moves through the thin walls of _____ and enters the _____ and is carried by the _____.– Capillaries– Blood– Plasma
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Lesson 3 – How does your body get rid of cell waste
• Carbon dioxide is _____ from the _____.– Exhaled– Lungs
• Nitrogen wastes are removed by the _____, the main organ of the _____.– Kidneys– Excretory system
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Lesson 3 – How does your body get rid of cell waste
• Each kidney has about _____ tiny _____ that filter _____ from the _____. – One million– Tubes– Waste– Blood
• Your kidneys clean all of your _____ about _____ times every day.– Blood– 40
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Lesson 3 – How does your body get rid of cell waste
• These wastes form a liquid called _____.– Urine
• It is temporarily stored in a baglike organ called the _____.– Urinary bladder
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Lesson 3 – How does your body get rid of cell waste
• The cleaned blood moves through _____ in the kidneys into _____ that carry it back to the _____ which pumps the cleaned _____ throughout the _____.– Capillaries– Veins– Heart– Blood– Body
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Lesson 3 – How does your body get rid of cell waste
• Even though your body needs water, it _____ some every day to prevent extra water from _____.– Excretes– Building up
• You excrete water when you _____, in your _____, and by _____.– Exhale– Urine– Sweating
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Lesson 3 – How does your body get rid of cell waste
• Water excretion helps your body keep a normal _____.– temperature