Cardiovascular System — Exam Notes, Summary,
and Practice Material
what is the role of a functional cardiovascular system - Correct answer- supplying oxygen and nutrients to tissues and removing
wastes from them
The ____ is the strongest muscle in the body - Correct answer- heart
What is the right side of the heart responsible for? - Correct answer- pumping blood into your lungs and oxygenating it
What is the left side of the heart responsible for?
Correct answer — distributing oxygenated blood throughout the body
The heart is actually a ___-barreled, __-chambered pumper
Correct answer — 2 ; 4
The two sides of the heart (do/do not) work independently
Correct answer — do not
What causes the lubb dubb sounds of the heart
Correct answer — the closing of the tricuspid and mitral valves and semilunar valves
Where is the heart located?
Correct answer — underneath the mediastinum
a hollow, cone-shaped, muscular pump located within the mediastinum of the thorax and resting upon the
diaphragm
Correct answer — heart
the outer most layer of the covering of the heart
Correct answer — fibrous pericardium
a double layer that covers the heart and turns back upon itself to form another layer of the heart's
covering
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, Correct answer — visceral pericardium
covering of the heart that is formed by the folding of the visceral pericardium
Correct answer — parietal pericardium
covering of the heart made of tough, white fibrous connective tissue
Correct answer — pericardium
space between the parietal and visceral layers
Correct answer — pericardial cavity
serous fluid secreted by the pericardial membranes that reduces friction between the pericardial
membranes as the heart moves inside
Correct answer — pericardial fluid
outer covering of the walls of the heart; protective layer; consists of connective tissue covered by epithelium, blood, and lymph
capillaries, nerve fibers, some fat, and coronary arteries and veins which provide blood flow through the
middle layer
Correct answer — epicardium
middle layer of the wall of the heart; thick and consists of muscle tissue that pumps blood out of the heart
chambers; pumps 70 ml of blood with each contraction
Correct answer — myocardium
layer of the walls of the heart that contains blood vessels and specialized cardiac muscle fibers called
Purkinje fibers; forms a protective inner lining or chambers and valves; is also continuous with the inner
lining of blood vessels attached to the heart
Correct answer — endocardium
The heart has _______ circulation (or 2 pathways that blood leaving the heart may go)
Correct answer — double
circulation that takes blood to the lungs
Correct answer — pulmonary
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