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ATI TEAS CARDIOVASCULAR SYSTEM
TEST 2025 QUESTIONS AND ANSWERS.
Describe the human heart, its 4 chambers and the 3 layers of
the heart wall.
The human heart is a muscular organ composed primarily of
cardiac muscle. It consists of four chambers: two upper chambers
called the atria and two lower chambers called the ventricles. The
atria are separated from the ventricles by a muscular structure
called the septum. Three layers make up the heart wall. These
are the pericardium or outer layer, the myocardium or middle
layer, and the endocardium or innermost layer.
Most cardiac muscle tissue is found in the
________________________.
Most cardiac muscle tissue is found in the myocardium.
Aortic valve
Aortic valve regulates blood flow from the left ventricle to the
aorta. The aorta is the largest artery in the body.
Mitral valve
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Mitral valve regulates blood flow from the left atrium into the left
ventricle.
Pulmonary valve
Pulmonary valve regulates blood flow from the right ventricle into
the pulmonary artery.
Tricuspid valve
Tricuspid valve regulates blood flow between the right atrium and
right ventricle.
Two major veins, the ___________________________ and the
_________________________, brings deoxygenated blood
from the upper and lower half of the body.
Two major veins, the Superior Vena Cava and the Inferior Vena
Cava, brings deoxygenated blood from the upper and lower half
of the body.
Cardiac cycle
The complete cycle beginning with atrial contraction and ending
with ventricular contraction is called the cardiac cycle. When the
heart contracts and pumps blood into systemic circulation, this is
called systole.
Diastole
ATI TEAS CARDIOVASCULAR SYSTEM
TEST 2025 QUESTIONS AND ANSWERS.
Describe the human heart, its 4 chambers and the 3 layers of
the heart wall.
The human heart is a muscular organ composed primarily of
cardiac muscle. It consists of four chambers: two upper chambers
called the atria and two lower chambers called the ventricles. The
atria are separated from the ventricles by a muscular structure
called the septum. Three layers make up the heart wall. These
are the pericardium or outer layer, the myocardium or middle
layer, and the endocardium or innermost layer.
Most cardiac muscle tissue is found in the
________________________.
Most cardiac muscle tissue is found in the myocardium.
Aortic valve
Aortic valve regulates blood flow from the left ventricle to the
aorta. The aorta is the largest artery in the body.
Mitral valve
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Mitral valve regulates blood flow from the left atrium into the left
ventricle.
Pulmonary valve
Pulmonary valve regulates blood flow from the right ventricle into
the pulmonary artery.
Tricuspid valve
Tricuspid valve regulates blood flow between the right atrium and
right ventricle.
Two major veins, the ___________________________ and the
_________________________, brings deoxygenated blood
from the upper and lower half of the body.
Two major veins, the Superior Vena Cava and the Inferior Vena
Cava, brings deoxygenated blood from the upper and lower half
of the body.
Cardiac cycle
The complete cycle beginning with atrial contraction and ending
with ventricular contraction is called the cardiac cycle. When the
heart contracts and pumps blood into systemic circulation, this is
called systole.
Diastole
