NASM-CPT (7TH EDITION) CHAPTER 6
STUDY GUIDE
Cardiorespiratory System - ANSWER A system of the body composed of the heart,
blood, blood vessels, lungs, and airways.
Cardiovascular System - ANSWER A system of the body, also known as the circulatory
system, that transports blood to tissues of the body.
Thoracic Cavity - ANSWER Chamber within the chest that contains the heart and lungs.
Mediastinum - ANSWER The space in the chest between the lungs that contains all the
internal organs of the chest (e.g., heart, esophagus) except the lungs.
Cardiac Muscle - ANSWER Muscle of the heart.
Skeletal Muscle - ANSWER The type of muscle tissue that connects to bones and
generates the forces that create movement.
Smoothe Muscle - ANSWER An involuntary nonstriated muscle type that is found in
organs.
Myofibrils - ANSWER The contractile components of a muscle cell; the myofilaments
(actin and myosin) are contained within.
Sarcomere - ANSWER The structural unit of a myofibril, composed of actin and myosin
filaments between two Z-lines.
Atrium (Atria) - ANSWER Superior chamber(s) of the heart that gathers blood returning
to the heart.
Ventricle - ANSWER Inferior chamber of the heart that pumps blood to the lungs and
body.
Pulmonic Side Of The Heart - ANSWER Right side of the heart is the pulmonic side
because it receives blood from the body that is low in oxygen and high in carbon dioxide
—often referred to as deoxygenated blood. The deoxygenated blood is then pumped to
the lungs to be saturated with oxygen.
Systemic Side Of The Heart - ANSWER The left side of the heart because it has
received oxygenated blood from the lungs that is high in oxygen and low in carbon
dioxide, which it then pumps out to the rest of the body.
