ATI TEAS SCIENCE EXAMINATION PAPER
QUESTIONS WITH ANSWERS GRADED A+
2026
◉ What are the 7 parts of the respiratory system? Answer: 1. Nose
2. Pharynx
3. Larynx (voice box)
4. Trachea (windpipe)
5. Bronchi
6. Bronchioles
7. Alveoli
◉ What are alveoli surrounded by to allow the exchange of O2 and
CO2? Answer: Capillaries
◉ What is cilia? Answer: Tiny hairs in the nose and trachea that
wave particles up away and out
◉ What is mucus? Answer: Something that keeps the air warm and
moist but also traps particles
◉ How many alveoli does each lung have? Answer: 150 million
,◉ What does hemoglobin do? Answer: Carries oxygen through the
blood
◉ What is pleura? Answer: Sacs that surround the lungs
◉ What is the diaphragm? Answer: The muscle at the bottom of the
thoracic cavity
◉ What happens during inhalation? Answer: Diaphragm moves
down (contracts), rib cage rises, volume of chest cavity increases, air
moves in to fill the space
◉ What happens during exhalation? Answer: Diaphragm moves up
(relaxes), rib cage lowers, space becomes smaller, air is pushed out
of lungs
◉ What does the medulla oblongata do? Answer: Controls breathing
◉ What is chronic bronchitis? Answer: Bronchi swell and become
clogged with mucus
◉ What is emphysema? Answer: Tissues in lungs lose elasticity;
tissues can't enough O2 or get rid of enough CO2
,◉ What is lung cancer? Answer: Cells that do not stop reproducing;
can spread to other locations because lungs are so central and
connected to so much; survival is generally less then 5 years from
diagnosis
◉ What is heart disease? Answer: Blood vessels are constricted,
blood pressure rises, heart has to work harder, heart wears out more
quickly
◉ What is cystic fibrosis? Answer: Genetic (recessive); lungs can get
clogged with mucous
◉ What is mesothelioma? Answer: Lungs become exposed to
asbestos and lose elasticity
◉ What is elastic recoil? Answer: The ability for the alveoli to get
filled with air then return to their normal shape once the air is
released
◉ What is a spirometer? Answer: an instrument for measuring the
air capacity of the lungs
◉ What is tidal volume? Answer: The amount of air taken in and
breathed out in a typical breath
, ◉ What is supplemental volume? Answer: The xtra air that can be
inhaled or exhaled with a deep breath
◉ What is reserve amount? Answer: The amount of extra air you can
breathe out when you force air out of your lungs
◉ What is residual amount? Answer: The amount of air in your
lungs that you cannot get rid of (even during forced exhaling)
◉ What is vital capacity? Answer: All the air you can control going in
or out of your lungs (supplemental + reserve = vital)
◉ What is total capacity? Answer: From the top of your
supplemental amount to the bottom of your residual volume
◉ Main idea Answer: the most important or central thought of a
paragraph or larger section of text, which tells the reader what the
text is about
◉ Topic Answer: a particular issue or idea that serves as the subject
of a paragraph, essay, report, or speech
◉ -topic is the general subject of a paragraph
QUESTIONS WITH ANSWERS GRADED A+
2026
◉ What are the 7 parts of the respiratory system? Answer: 1. Nose
2. Pharynx
3. Larynx (voice box)
4. Trachea (windpipe)
5. Bronchi
6. Bronchioles
7. Alveoli
◉ What are alveoli surrounded by to allow the exchange of O2 and
CO2? Answer: Capillaries
◉ What is cilia? Answer: Tiny hairs in the nose and trachea that
wave particles up away and out
◉ What is mucus? Answer: Something that keeps the air warm and
moist but also traps particles
◉ How many alveoli does each lung have? Answer: 150 million
,◉ What does hemoglobin do? Answer: Carries oxygen through the
blood
◉ What is pleura? Answer: Sacs that surround the lungs
◉ What is the diaphragm? Answer: The muscle at the bottom of the
thoracic cavity
◉ What happens during inhalation? Answer: Diaphragm moves
down (contracts), rib cage rises, volume of chest cavity increases, air
moves in to fill the space
◉ What happens during exhalation? Answer: Diaphragm moves up
(relaxes), rib cage lowers, space becomes smaller, air is pushed out
of lungs
◉ What does the medulla oblongata do? Answer: Controls breathing
◉ What is chronic bronchitis? Answer: Bronchi swell and become
clogged with mucus
◉ What is emphysema? Answer: Tissues in lungs lose elasticity;
tissues can't enough O2 or get rid of enough CO2
,◉ What is lung cancer? Answer: Cells that do not stop reproducing;
can spread to other locations because lungs are so central and
connected to so much; survival is generally less then 5 years from
diagnosis
◉ What is heart disease? Answer: Blood vessels are constricted,
blood pressure rises, heart has to work harder, heart wears out more
quickly
◉ What is cystic fibrosis? Answer: Genetic (recessive); lungs can get
clogged with mucous
◉ What is mesothelioma? Answer: Lungs become exposed to
asbestos and lose elasticity
◉ What is elastic recoil? Answer: The ability for the alveoli to get
filled with air then return to their normal shape once the air is
released
◉ What is a spirometer? Answer: an instrument for measuring the
air capacity of the lungs
◉ What is tidal volume? Answer: The amount of air taken in and
breathed out in a typical breath
, ◉ What is supplemental volume? Answer: The xtra air that can be
inhaled or exhaled with a deep breath
◉ What is reserve amount? Answer: The amount of extra air you can
breathe out when you force air out of your lungs
◉ What is residual amount? Answer: The amount of air in your
lungs that you cannot get rid of (even during forced exhaling)
◉ What is vital capacity? Answer: All the air you can control going in
or out of your lungs (supplemental + reserve = vital)
◉ What is total capacity? Answer: From the top of your
supplemental amount to the bottom of your residual volume
◉ Main idea Answer: the most important or central thought of a
paragraph or larger section of text, which tells the reader what the
text is about
◉ Topic Answer: a particular issue or idea that serves as the subject
of a paragraph, essay, report, or speech
◉ -topic is the general subject of a paragraph
