TEAS 7 Science Study Guide
The content of the TEAS 7 Science section has undergone a far more substantial
change. This new version contains specific sections about chemistry and biology,
and the old section on life and physical sciences has been removed. The sections
on human anatomy and physiology and scientific reasoning remain. However, to
make room for the questions regarding chemistry and biology, the number of
questions about anatomy and physiology has been cut nearly in half.
Here are the sections and their corresponding number of scored questions:
Human Anatomy and Physiology—18
Biology—9
Chemistry—9
Scientific Reasoning—9
Types of Questions
If you take the TEAS 7 online, you will notice that a few of the questions in each
section are presented differently, and there is a slightly different procedure
required to answer them. These are not typical multiple-choice/four-choice
questions.
Human Anatomy and Physiology:
The Basics
Despite the reduction in the number of questions in this area, the largest portion of
the Science section of the ATI TEAS still concerns the human body. This may
include questions regarding the gastrointestinal system and human metabolism as
well as more complex ones that require you to identify the bodily system
responsible for reproductive function, hormone output, or the body’s electrical
impulses. The questions may cover muscles and body functions, ranging from the
purpose and parts of the heart to those of the abdominal muscles. To prepare for
these questions, study all aspects of the body and its systems.
,The Human Anatomical Orientation
Communicating specific information about the body must begin with using a
universal system of directional terms to eliminate confusion. This section contains
the standards used in anatomy and the medical profession to communicate
directions and positions on the body. Understanding these terms is an essential part
of the study of anatomy.
Anatomical Position
If a person is standing upright and facing forward, with their arms by their side,
palms facing meforward, and fingers pointing down, they are in the resting pose.
Many terms in anatomy will refer to the position of body parts in relation to this
standard pose.
Anatomical Planes
To help in understanding anatomy, the human body is discussed in three planes:
the coronal, sagittal, and transverse (or horizontal). These planes represent three
ways of dividing the body in half. The coronal plane separates the front and back
(or anterior/ventral and posterior/dorsal) halves, the sagittal plane separates the left
,and right halves, and the transverse plane separates the top and bottom (or inferior
and superior) halves.
Anatomical Direction
Directional terms in anatomy describe where structures are located in relation to
each other. Superior is toward the head, or higher, inferior is away from the head,
or lower. Anterior or ventral is toward the front of the body, and posterior or dorsal
is toward the back of the body. The next set of terms tell us how close structures
are relative to each other. Structures close together are proximal while those farther
apart are distal. Lateral refers to structures toward the right or left sides, while
medial refers to the middle. Finally, superficial is used to describe structures nearer
the surface of the body, while deep is used for structures farther inside the body.
Anatomical Regions
The body is subdivided into various regions. These include the head, neck, torso,
upper extremities, and lower extremities. The torso, or trunk, can be further
divided into the thorax (chest area), the pelvis (hips), and abdomen (between the
chest and the hips). Upper extremities include the arms and hands, and the lower
extremities include the legs and feet.
Human Anatomy and Physiology: The Respiratory and Cardiovascular
Systems
Anatomy and Physiology of the Respiratory System
The function of the respiratory system is to bring oxygen into the body and to
expel carbon dioxide from the body. It consists of tubes that transport air into the
body and air sacs where these gases are exchanged in the bloodstream. The
respiratory system also filters out particles from the air, helps produce sound, has a
role in the sense of smell, and controls the temperature and humidity of the air
entering the lungs.
Structure
, 2 Respiratory System.jpg
The respiratory system includes the nose, throat, and lungs, as well as the trachea,
bronchi, and diaphragm. The respiratory system can be divided into the upper
respiratory tract (nose, sinuses, pharynx, and larynx) and the lower respiratory tract
(trachea, bronchi, and lungs).
Interaction with the Cardiovascular System
Although the respiratory system is typically described as the mouth and lungs,
respiration is more than just breathing. It’s the process of using oxygen to break
down food for energy. The respiratory system is responsible for external
respiration, or getting oxygen from the external environment into the body. Once
the oxygen enters the lungs, oxygen diffuses into the blood. Internal respiration
involves the transport of oxygen to all the tissues and cells in the body through the
blood. Finally, cellular respiration occurs inside where oxygen is used to break
glucose molecules down for energy. The blood then transports the waste product,
carbon dioxide, back to the lungs where it is exhaled. The respiratory and
cardiovascular system are tightly intertwined.
Function
The function of the respiratory system is to receive and deliver oxygen and remove
carbon dioxide. The diaphragm is a sheet of muscle that enables breathing. The
The content of the TEAS 7 Science section has undergone a far more substantial
change. This new version contains specific sections about chemistry and biology,
and the old section on life and physical sciences has been removed. The sections
on human anatomy and physiology and scientific reasoning remain. However, to
make room for the questions regarding chemistry and biology, the number of
questions about anatomy and physiology has been cut nearly in half.
Here are the sections and their corresponding number of scored questions:
Human Anatomy and Physiology—18
Biology—9
Chemistry—9
Scientific Reasoning—9
Types of Questions
If you take the TEAS 7 online, you will notice that a few of the questions in each
section are presented differently, and there is a slightly different procedure
required to answer them. These are not typical multiple-choice/four-choice
questions.
Human Anatomy and Physiology:
The Basics
Despite the reduction in the number of questions in this area, the largest portion of
the Science section of the ATI TEAS still concerns the human body. This may
include questions regarding the gastrointestinal system and human metabolism as
well as more complex ones that require you to identify the bodily system
responsible for reproductive function, hormone output, or the body’s electrical
impulses. The questions may cover muscles and body functions, ranging from the
purpose and parts of the heart to those of the abdominal muscles. To prepare for
these questions, study all aspects of the body and its systems.
,The Human Anatomical Orientation
Communicating specific information about the body must begin with using a
universal system of directional terms to eliminate confusion. This section contains
the standards used in anatomy and the medical profession to communicate
directions and positions on the body. Understanding these terms is an essential part
of the study of anatomy.
Anatomical Position
If a person is standing upright and facing forward, with their arms by their side,
palms facing meforward, and fingers pointing down, they are in the resting pose.
Many terms in anatomy will refer to the position of body parts in relation to this
standard pose.
Anatomical Planes
To help in understanding anatomy, the human body is discussed in three planes:
the coronal, sagittal, and transverse (or horizontal). These planes represent three
ways of dividing the body in half. The coronal plane separates the front and back
(or anterior/ventral and posterior/dorsal) halves, the sagittal plane separates the left
,and right halves, and the transverse plane separates the top and bottom (or inferior
and superior) halves.
Anatomical Direction
Directional terms in anatomy describe where structures are located in relation to
each other. Superior is toward the head, or higher, inferior is away from the head,
or lower. Anterior or ventral is toward the front of the body, and posterior or dorsal
is toward the back of the body. The next set of terms tell us how close structures
are relative to each other. Structures close together are proximal while those farther
apart are distal. Lateral refers to structures toward the right or left sides, while
medial refers to the middle. Finally, superficial is used to describe structures nearer
the surface of the body, while deep is used for structures farther inside the body.
Anatomical Regions
The body is subdivided into various regions. These include the head, neck, torso,
upper extremities, and lower extremities. The torso, or trunk, can be further
divided into the thorax (chest area), the pelvis (hips), and abdomen (between the
chest and the hips). Upper extremities include the arms and hands, and the lower
extremities include the legs and feet.
Human Anatomy and Physiology: The Respiratory and Cardiovascular
Systems
Anatomy and Physiology of the Respiratory System
The function of the respiratory system is to bring oxygen into the body and to
expel carbon dioxide from the body. It consists of tubes that transport air into the
body and air sacs where these gases are exchanged in the bloodstream. The
respiratory system also filters out particles from the air, helps produce sound, has a
role in the sense of smell, and controls the temperature and humidity of the air
entering the lungs.
Structure
, 2 Respiratory System.jpg
The respiratory system includes the nose, throat, and lungs, as well as the trachea,
bronchi, and diaphragm. The respiratory system can be divided into the upper
respiratory tract (nose, sinuses, pharynx, and larynx) and the lower respiratory tract
(trachea, bronchi, and lungs).
Interaction with the Cardiovascular System
Although the respiratory system is typically described as the mouth and lungs,
respiration is more than just breathing. It’s the process of using oxygen to break
down food for energy. The respiratory system is responsible for external
respiration, or getting oxygen from the external environment into the body. Once
the oxygen enters the lungs, oxygen diffuses into the blood. Internal respiration
involves the transport of oxygen to all the tissues and cells in the body through the
blood. Finally, cellular respiration occurs inside where oxygen is used to break
glucose molecules down for energy. The blood then transports the waste product,
carbon dioxide, back to the lungs where it is exhaled. The respiratory and
cardiovascular system are tightly intertwined.
Function
The function of the respiratory system is to receive and deliver oxygen and remove
carbon dioxide. The diaphragm is a sheet of muscle that enables breathing. The
