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The pull of air into and back of the body is called:
A. trachea B. diaphragm C. inhaling D. breathing
D. breathing
The waste gas_________ is removed from your body during breathing.
A. oxygen B. helium C. blood
D. carbon dioxide
D. carbon dioxide
What is another name for the body part often called the "windpipe"?
A. trachea B. larynx C. bronchi D. lungs
A. trachea
Alveoli are covered by tiny blood vessels called_____
A. bronchioles B.bronchi C. lungs D. capillaries
D. capillaries
How long can cells survive without oxygen?
A. 15 minutes B. 3-6 minutes C. 1 hour
D. 30 minutes
B. 3-6 minutes
____________ is the act of breathing oxygen in and breathing carbon dioxide out.
A. exhaling B. inhaling C. respiration D. lungs
C. respiration
How does air enter the respiratory system?
A. trachea & alveoli B. nose & mouth
C. bronchi & bronchioles
D. windpipe & vocal cords
B. nose & mouth
The tiny hairs that protect the respiratory tract are called?
A. bronchioles B. alveoli C. capillaries D. cilia
D. cilia
How does oxygen get from the air you breathe to the bloodstream?
A. it enters blood on its way to the lungs
B. it passes through the alveoli into capillaries
C. it absorbs into the bronchioles
D. it transfers from the larynx to the trachea
B. it passes through the alveoli into capillaries
______ breathing allows you to hold your breath or control your breath in or out.
A. inhale B. involuntary C. voluntary D. exhale
C. voluntary
Which of these is NOT part of the respiratory system?
A. lungs B. nose C. heart D. trachea
C. heart
The _______ is a hollow organ that connects the throat to the trachea and holds our vocal cords.
A. larynx B. lungs C. windpipe D. bronchi
A. larynx
How does air enter the lungs?
A. through two tubes called the bronchi
B. through tiny blood vessels called capillaries
C. be exhaling through the mouth
D. through the vibration of the vocal cords
A. through two tubes called the bronchi
How often does breathing happen?
A. every 3-5 minutes B. every hour
C. every 3-5 seconds D. every 2 minutes
C. every 3-5 seconds
________ breathing is controlled by the body, when awake or asleep.
A. inhale B. involuntary C. voluntary D. exhale
B. involuntary
The function of the respiratory system is________
A. to move blood around the body
B. allow us to breathe C.support the body
D. to send signals from the brain to body parts
B. allow us to breathe
What is another name for the body part often called the "voice box".
A. trachea B. larynx C. bronchi D. lungs
B. larynx
Once air is inside your lungs, it travels to smaller tubes called______
A. capillaries B. bronchioles C. alveoli D. trachea
B. bronchioles
_______ is the breathing in of oxygen.
A. inhaling B. exhaling C. diaphragm D. bronchi
A. inhaling
A. it is produced when you in
B. it passes through the walls of the alveoli
C. it is waste gas from cells
D. it is formed when air moves over the vocal cords
C. it is a waste gas from cells
Why does your body need oxygen?
A. cells need it to perform their functions
B. secretes hormones in the blood
C. helps the body fight infection
D. break down food
A. cells need it to perform their functions
The main tube that carries air to your lungs is called the_________.
A. capillaries B. larynx C. trachea D. alveoli
C. trachea
At the end of bronchioles are tiny air sacs called_____
A. bronchi B. capillaries C. alveoli D. trachea
C. alveoli
The large muscle beneath the lungs that helps you inhale and exhale is called the ______________
A. trachea B. bronchioles C. diaphragm D. bronchi
C. diaphragm
What protects your lungs inside your chest?
A. rib cage B. heart C. diaphragm muscle
D. lobes
A. rib cage