Page |1
ATI TEAS Science Exam 2026
Practice Questions with Verified
Answer Explanations for Excellent
Scores
What d0es the respirat0ry system d0? - c0rrect-answer-Brings in 0xygen t0 g0 int0
the cells, and picks up carb0n di0xide t0 be rem0ved fr0m the b0dyguard
What are the 7 parts 0f the respirat0ry system? - c0rrect-answer-1. N0se
2. Pharynx
3. Larynx (v0ice b0x)
4. Trachea (windpipe)
5. Br0nchi
6. Br0nchi0les
7. Alve0li
What are alve0li surr0unded by t0 all0w the exchange 0f 02 and C02? - c0rrect-
answer-Capillaries
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What is cilia? - c0rrect-answer-Tiny hairs in the n0se and trachea that wave
particles up away and 0ut
What is mucus? - c0rrect-answer-S0mething that keeps the air warm and m0ist
but als0 traps particles
H0w many alve0li d0es each lung have? - c0rrect-answer-150 milli0n
What d0es hem0gl0bin d0? - c0rrect-answer-Carries 0xygen thr0ugh the bl00d
What is pleura? - c0rrect-answer-Sacs that surr0und the lungs
What is the diaphragm? - c0rrect-answer-The muscle at the b0tt0m 0f the
th0racic cavity
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What happens during inhalati0n? - c0rrect-answer-Diaphragm m0ves d0wn (c0ntracts),
rib cage rises, v0lume 0f chest cavity increases, air m0ves in t0 fill the space
What happens during exhalati0n? - c0rrect-answer-Diaphragm m0ves up
(relaxes), rib cage l0wers, space bec0mes smaller, air is pushed 0ut 0f lungs
What d0es the medulla 0bl0ngata d0? - c0rrect-answer-C0ntr0ls breathing
What is chr0nic br0nchitis? - c0rrect-answer-Br0nchi swell and bec0me cl0gged
with mucus
What is emphysema? - c0rrect-answer-Tissues in lungs l0se elasticity; tissues
can't en0ugh 02 0r get rid 0f en0ugh C02
What is lung cancer? - c0rrect-answer-Cells that d0 n0t st0p repr0ducing; can
spread t0 0ther l0cati0ns because lungs are s0 central and c0nnected t0 s0 much;
survival is generally less then 5 years fr0m diagn0sis
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What is heart disease? - c0rrect-answer-Bl00d vessels are c0nstricted, bl00d
pressure rises, heart has t0 w0rk harder, heart wears 0ut m0re quickly
What is cystic fibr0sis? - c0rrect-answer-Genetic (recessive); lungs can get cl0gged
with muc0us
What is mes0theli0ma? - c0rrect-answer-Lungs bec0me exp0sed t0 asbest0s and
l0se elasticity
What is elastic rec0il? - c0rrect-answer-The ability f0r the alve0li t0 get filled with
air then return t0 their n0rmal shape 0nce the air is released
What is a spir0meter? - c0rrect-answer-an instrument f0r measuring the air
capacity 0f the lungs
What is tidal v0lume? - c0rrect-answer-The am0unt 0f air taken in and breathed 0ut
in a typical breath
ATI TEAS Science Exam 2026
Practice Questions with Verified
Answer Explanations for Excellent
Scores
What d0es the respirat0ry system d0? - c0rrect-answer-Brings in 0xygen t0 g0 int0
the cells, and picks up carb0n di0xide t0 be rem0ved fr0m the b0dyguard
What are the 7 parts 0f the respirat0ry system? - c0rrect-answer-1. N0se
2. Pharynx
3. Larynx (v0ice b0x)
4. Trachea (windpipe)
5. Br0nchi
6. Br0nchi0les
7. Alve0li
What are alve0li surr0unded by t0 all0w the exchange 0f 02 and C02? - c0rrect-
answer-Capillaries
, Page |2
What is cilia? - c0rrect-answer-Tiny hairs in the n0se and trachea that wave
particles up away and 0ut
What is mucus? - c0rrect-answer-S0mething that keeps the air warm and m0ist
but als0 traps particles
H0w many alve0li d0es each lung have? - c0rrect-answer-150 milli0n
What d0es hem0gl0bin d0? - c0rrect-answer-Carries 0xygen thr0ugh the bl00d
What is pleura? - c0rrect-answer-Sacs that surr0und the lungs
What is the diaphragm? - c0rrect-answer-The muscle at the b0tt0m 0f the
th0racic cavity
, Page |3
What happens during inhalati0n? - c0rrect-answer-Diaphragm m0ves d0wn (c0ntracts),
rib cage rises, v0lume 0f chest cavity increases, air m0ves in t0 fill the space
What happens during exhalati0n? - c0rrect-answer-Diaphragm m0ves up
(relaxes), rib cage l0wers, space bec0mes smaller, air is pushed 0ut 0f lungs
What d0es the medulla 0bl0ngata d0? - c0rrect-answer-C0ntr0ls breathing
What is chr0nic br0nchitis? - c0rrect-answer-Br0nchi swell and bec0me cl0gged
with mucus
What is emphysema? - c0rrect-answer-Tissues in lungs l0se elasticity; tissues
can't en0ugh 02 0r get rid 0f en0ugh C02
What is lung cancer? - c0rrect-answer-Cells that d0 n0t st0p repr0ducing; can
spread t0 0ther l0cati0ns because lungs are s0 central and c0nnected t0 s0 much;
survival is generally less then 5 years fr0m diagn0sis
, Page |4
What is heart disease? - c0rrect-answer-Bl00d vessels are c0nstricted, bl00d
pressure rises, heart has t0 w0rk harder, heart wears 0ut m0re quickly
What is cystic fibr0sis? - c0rrect-answer-Genetic (recessive); lungs can get cl0gged
with muc0us
What is mes0theli0ma? - c0rrect-answer-Lungs bec0me exp0sed t0 asbest0s and
l0se elasticity
What is elastic rec0il? - c0rrect-answer-The ability f0r the alve0li t0 get filled with
air then return t0 their n0rmal shape 0nce the air is released
What is a spir0meter? - c0rrect-answer-an instrument f0r measuring the air
capacity 0f the lungs
What is tidal v0lume? - c0rrect-answer-The am0unt 0f air taken in and breathed 0ut
in a typical breath
