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ATI TEAS Science Study Guide 2026/2027 | Comprehensive Exam Review with Verified Answers

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Ace your nursing school entrance exam with this comprehensive ATI TEAS Science study guide for the 2026/2027 testing cycle. Covering all science domains tested on the TEAS Version 7, this resource includes detailed sections on human anatomy and physiology (cardiovascular, respiratory, digestive, nervous, reproductive, integumentary, endocrine, genitourinary, immune, and skeletal systems), cell biology, chemistry basics (atoms, bonding, water properties), and scientific reasoning. With hundreds of practice questions, verified answers, and clear explanations of key concepts like mitosis, meiosis, organ functions, and body planes, this digital download is essential for pre-nursing students seeking high scores. Perfect for HESI prep and healthcare entrance exams.

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2
Ati Teas,2026 ATI TEAS:
Science
What does the respiratory system do? correct answers -Brings in oxygen
to go into the cells, and picks up carbon dioxide to be removed from the
bodyguard

What are the 7 parts of the respiratory system? correct answers -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? correct answers -Tiny hairs in the nose and trachea that
wave particles up away and out

What is mucus? correct answers -Something that keeps the air warm and
moist but also traps particles

What does hemoglobin do? correct answers -Carries oxygen through the
blood

What is pleura? correct answers -Sacs that surround the lungs

What is the diaphragm? correct answers -The muscle at the bottom of
the thoracic cavity

What happens during inhalation? correct answers -Diaphragm moves
down (contracts), rib cage rises, volume of chest cavity increases, air
moves in to fill the space

,What happens during exhalation? correct answers -Diaphragm moves up
(relaxes), rib cage lowers, space becomes smaller, air is pushed out of
lungs

What does the medulla oblongata do? correct answers -Controls
breathing What is chronic bronchitis? correct answers -Bronchi swell and
become clogged with mucus

What is emphysema? correct answers -Tissues in lungs lose elasticity;
tissues can't enough O2 or get rid of enough CO2

What is lung cancer? correct answers -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 elastic recoil? correct answers -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? correct answers -an instrument for measuring the
air capacity of the lungs

What is tidal volume? correct answers -The amount of air taken in and
breathed out in a typical breath

What is supplemental volume? correct answers -The xtra air that can be
inhaled or exhaled with a deep breath

What is reserve amount? correct answers -The amount of extra air you
can breathe out when you force air out of your lungs

What is residual amount? correct answers -The amount of air in your
lungs that you cannot get rid of (even during forced exhaling)

What is vital capacity? correct answers -All the air you can control going
in or out of your lungs (supplemental + reserve = vital)

What is total capacity? correct answers -From the top of your
supplemental amount to the bottom of your residual volume

,Main idea correct answers -the most important or central thought of a
paragraph or larger section of text, which tells the reader what the text
is about

Topic correct answers -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
-Topics are simple and are described with just a word or a phrase. -
main idea is a complete sentence; it includes the topic correct answers
-What's the difference between a topic and main idea?

Key ideas correct answers -Ideas that support controlling idea

Controlling idea correct answers --your opinion about the topic.
- It helps the reader understand your purpose for writing the paragraph
or essay

Conclusion correct answers -A deduction made by the reader about an
unstated outcome from reading passage

Inference correct answers -A conclusion one can draw from the
presented details.

anatomical position correct answers -a standard position in which the
body is facing forward, the feet are parallel to each other, and the arms
are at the sides with the palms facing forward

Cells correct answers -The basic unit of structure and function in all living
things

Cellular functions correct answers -Processes that include growth,
metabolism, replication, protein synthesis, and movement

Directional terminology correct answers -Words used to explain
relationships of locations of anatomical elements (distal, posterior,
medial, etc.)

, organ system correct answers -A group of organs that work together in
performing vital body functions.

Organelle correct answers -specialized structure that performs
important cellular functions within a eukaryotic cell

Organ correct answers -A collection of tissues that carry out a specialized
function of the body

Reference Planes correct answers -Planes dividing the body to describe
locations (ex: sagittal, coronal, and transverse)

Tissue correct answers -A group of similar cells that perform a specific
function.

Eukaryotic cells correct answers -Contain a nucleus and other organelles
that are bound by membranes.

prokaryotic cell correct answers -cell that does not have a nucleus or
other membrane-bound organelles. (Bacteria)

Ribosome correct answers -site of protein synthesis

Nucleus correct answers -A part of the cell containing DNA and RNA and
responsible for growth and reproduction

Nucleolus correct answers -Found inside the nucleus and produces
ribosomes

Cytoplasm correct answers -A jellylike fluid inside the cell in which the
organelles are suspended

Gogli Apparatus correct answers -organelle in cells that modifies, sorts,
and packages prooteins and other materials from the endoplasmic
reticulum for storage in the cell or release outside the cell

Vacuole correct answers -A sac inside a cell that acts as a storage area

Smooth Endoplasmic Reticulum correct answers -creates lipids or fat

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