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WorksheetsCH11.1 A&P of the Heart CYU
Total questions: 20
Worksheet time: 12mins
What is the main function of the cardiovascular system?
Generate nerve impulses
Maintain bone structure
Transport substances to and from cells
Produce hormones
Which structure serves as the muscular pump in the cardiovascular system?
Brain
Lungs
Liver
Heart
Vasodilation causes blood vessels to:
Narrow
Contract
Widen
Harden
Which chamber of the heart receives deoxygenated blood from the body?
Right atrium
Right ventricle
Left atrium
Left ventricle
Which valve is located between the right atrium and right ventricle?
Mitral valve
Aortic valve
Tricuspid valve
Pulmonary valve
What is the function of the chordae tendineae?
Close the semilunar valves
Increase blood pressure
Prevent valve inversion
Regulate heartbeat
What are the heart’s lower chambers called?
Atria
Ventricles
Valves
Septa
The epicardium is:
The heart's electrical center
The outer layer of the heart
The inner lining of the heart chambers
The muscle layer that pumps blood
Which valve prevents backflow from the aorta into the left ventricle?
Pulmonary
Tricuspid
Mitral
Aortic
What is the correct sequence of blood flow through the heart starting with the right atrium?
Right atrium → Right ventricle → Lungs → Left atrium → Left ventricle → Body
Left atrium → Right atrium → Lungs → Left ventricle → Right ventricle
Right atrium → Left atrium → Lungs → Right ventricle → Left ventricle
Right atrium → Left ventricle → Lungs → Right ventricle → Body
Which phase of the cardiac cycle is when the heart muscle is contracting?
Diastole
Systole
Resting
Atrial pause
What causes the “lub” sound in a heartbeat?
Aortic valve closing
Pulmonary valve opening
AV valves closing
Semilunar valves closing
What is the average cardiac output for an adult at rest?
2 L/min
3 L/min
5 L/min
10 L/min
Cardiac output is calculated using which formula?
SV – HR
HR ÷ SV
SV × HR
HR + SV
According to the Frank-Starling law, a stronger heart contraction occurs when:
The atria are at rest
The heart rate is low
The myocardial fibers are more stretched
The endocardium contracts forcefully
Mr. Thomas, an elderly patient, has a resting heart rate of 65 bpm. His stroke volume is 55 mL per beat. What is his cardiac output?
3.57 L/min
5.20 L/min
4.55 L/min
3.20 L/min
Emily is a teenager walking briskly. Her heart rate is 90 bpm, and her stroke volume is 75 mL/beat. What is her cardiac output?
6.25 L/min
7.10 L/min
6.75 L/min
5.25 L/min
After recovering from a viral illness, Iacob's heart rate is elevated at 95 bpm. His stroke volume has temporarily decreased to 50 mL/beat. What is Iacob's cardiac output?
4.25 L/min
5.50 L/min
3.75 L/min
4.75 L/min
Label the chambers of the heart:
Label the valves of the heart:
