CRNI STUDY Practice Test Quiz MOD 006 Questions &
Answers 2023/2024 GRADED A+
Heart correct answers A hollow, muscular organ made of four chambers that functions as a two-sided
pump
Right side of heart correct answers low-pressure system pumping venous or deoxygenated blood to the
lung
Left side of heart correct answers high-pressure system pumping arterial or oxygenated blood to
systemic circulation
right atrium correct answers Thin walled muscle that acts as a receiving chamber.
Superior vena cava correct answers Drains systemic venous blood from the upper part of the body and
from the inferior vena cava
Inferior vena cava correct answers Drains systemic blood from the lower extremities
right ventricle correct answers Most anterior chamber of the heart, lying directly beneath the sternum
During diastole correct answers tricuspid and mitral vale open, blood in the atria flows into relaxed
ventricles
Systolic pressures of Right Ventricle correct answers May be low because of pulmonary resistance
left atrium correct answers Most posterior chamber of the heart
left atrium receives blood from correct answers right/left pulmonary veins (from lungs)
Left atrium wall thickness correct answers Slightly thicker than that of right atrium and exerts a pressure
of 5-10mm Hg with little breathing variation
Left ventricle correct answers Lies posterior to and to the left of the right ventricle
Left ventricle wall thickness correct answers 13-15cm, three times thicker than right ventricle
cardiac valves function correct answers to ensure one-way forward blood flow
Atrioventricular valves correct answers Valves located along the AV groove separating the atria from the
ventricles, prevent backflow into the atria when the ventricles are contracting.
tricuspid valve correct answers A valve that is situated at the opening of the right atrium of the heart
into the right ventricle and that resembles the mitral valve in structure but consists of three triangular
membranous flaps.
Answers 2023/2024 GRADED A+
Heart correct answers A hollow, muscular organ made of four chambers that functions as a two-sided
pump
Right side of heart correct answers low-pressure system pumping venous or deoxygenated blood to the
lung
Left side of heart correct answers high-pressure system pumping arterial or oxygenated blood to
systemic circulation
right atrium correct answers Thin walled muscle that acts as a receiving chamber.
Superior vena cava correct answers Drains systemic venous blood from the upper part of the body and
from the inferior vena cava
Inferior vena cava correct answers Drains systemic blood from the lower extremities
right ventricle correct answers Most anterior chamber of the heart, lying directly beneath the sternum
During diastole correct answers tricuspid and mitral vale open, blood in the atria flows into relaxed
ventricles
Systolic pressures of Right Ventricle correct answers May be low because of pulmonary resistance
left atrium correct answers Most posterior chamber of the heart
left atrium receives blood from correct answers right/left pulmonary veins (from lungs)
Left atrium wall thickness correct answers Slightly thicker than that of right atrium and exerts a pressure
of 5-10mm Hg with little breathing variation
Left ventricle correct answers Lies posterior to and to the left of the right ventricle
Left ventricle wall thickness correct answers 13-15cm, three times thicker than right ventricle
cardiac valves function correct answers to ensure one-way forward blood flow
Atrioventricular valves correct answers Valves located along the AV groove separating the atria from the
ventricles, prevent backflow into the atria when the ventricles are contracting.
tricuspid valve correct answers A valve that is situated at the opening of the right atrium of the heart
into the right ventricle and that resembles the mitral valve in structure but consists of three triangular
membranous flaps.
