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L4.3 – Respiration and Circulation: 6th Grade  ...
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What is exchanged in the lungs?
 
Oxygen and carbon dioxide
 
Nitrogen and oxygen
 
Hydrogen and helium
 
Carbon and hydrogen
What system adjusts breathing when carbon dioxide levels rise?
 
Nervous system
 
Respiratory system
 
Skeletal system
 
Muscular system
What carries oxygen and nutrients to all body parts?
 
Blood vessels
 
Nerves
 
Bones
 
Ligaments
What materials do lungs expel?
 
Carbon dioxide
 
Oxygen
 
Hydrogen
 
Nitrogen
What materials do lungs bring in?
 
Oxygen
 
Carbon dioxide
 
Nitrogen
 
Water vapor
Why does exercise increase heart and breathing rate?
 
The body needs more oxygen
 
The body needs more food
 
The lungs get smaller
 
The brain slows activity
What happens to breathing rate during exercise?
 
It increases
 
It decreases
 
It stays the same
 
It stops
What happens to heart rate during exercise?
 
It increases
 
It decreases
 
It stays the same
 
It stops
What is breathing rate?
 
Number of breaths per minute
 
Amount of oxygen in blood
 
Pressure in lungs
 
Speed of circulation
What is heart rate?
 
Number of heartbeats per minute
 
Amount of oxygen in lungs
 
Speed of blood flow
 
Temperature of blood
What tool do doctors use to listen to the heart?
 
Stethoscope
 
Thermometer
 
Barometer
 
Microscope
What happens when carbon dioxide levels in blood increase?
 
Breathing rate increases
 
Breathing stops
 
Heart rate slows
 
Muscles relax
How do the respiratory and circulatory systems work together?
 
The lungs add oxygen to blood that the heart pumps
 
The lungs store red blood cells
 
The brain sends oxygen to lungs
 
The heart creates oxygen
What organ sends signals to control breathing?
 
Brain
 
Heart
 
Lungs
 
Stomach
Which system controls breathing rate?
 
Nervous system
 
Respiratory system
 
Circulatory system
 
Muscular system
Which organ system removes carbon dioxide from the blood?
 
Respiratory system
 
Muscular system
 
Skeletal system
 
Nervous system
What do red blood cells carry?
 
Oxygen
 
Water
 
Carbon dioxide
 
Protein
What do veins do?
 
Carry blood to the heart
 
Carry blood away from the heart
 
Carry oxygen to the lungs
 
Carry waste to the skin
What do arteries do?
 
Carry blood away from the heart
 
Carry blood to the heart
 
Carry air to lungs
 
Carry nutrients to the stomach
What is the function of the heart?
 
Pumps blood throughout the body
 
Stores red blood cells
 
Creates oxygen
 
Controls breathing rate
What is the function of the circulatory system?
 
Carries oxygen and nutrients to cells
 
Stores air in lungs
 
Controls breathing
 
Produces oxygen
Which system brings oxygen to cells?
 
Circulatory system
 
Respiratory system
 
Muscular system
 
Skeletal system
What is the function of the lungs?
 
Exchange oxygen and carbon dioxide
 
Store oxygen
 
Control heartbeat
 
Create energy
What gas do you breathe out?
 
Carbon dioxide
 
Oxygen
 
Hydrogen
 
Nitrogen
What gas do you breathe in?
 
Oxygen
 
Carbon dioxide
 
Nitrogen
 
Helium
What is the main function of the respiratory system?
 
Brings oxygen into the body and removes carbon dioxide
 
Controls muscles
 
Produces energy
 
Stores blood
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