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WorksheetsHuman Circulatory System Concepts
Total questions: 50
Worksheet time: 1hrs 24mins
Which factor primarily influences the shade of red in human blood?
The presence of blue pigment
The amount of oxygen it carries
The type of blood vessel it is in
The amount of carbon dioxide it carries
Which of the following is NOT a primary function of human blood?
Maintaining pH balance
Transporting hormones and nutrients
Generating electrical impulses for the heart
Regulating body temperature
Which component of blood is primarily responsible for transporting gases such as oxygen?
Plasma
White blood cells
Platelets
Red blood cells
What is the main function of platelets in blood?
Transporting oxygen to tissues
Fighting off infections
Initiating blood clotting
Carrying waste products away from cells
Which iron-containing protein in red blood cells gives blood its red color?
Myosin
Actin
Hemoglobin
Collagen
The human heart is typically divided into two distinct partitions based on which characteristic of the blood they handle?
Size of the chambers
Thickness of the walls
Oxygen content of the blood
Direction of blood flow
Where does the exchange of oxygen and carbon dioxide between the blood and body tissues primarily occur?
Arteries
Veins
Capillaries
Heart chambers
Which chambers of the heart are located at the top and generally have thinner walls than the lower chambers?
Ventricles
Atria
Aorta
Pulmonary arteries
What is the primary function of the valves in the heart?
To increase the speed of blood flow.
To prevent the backflow of blood.
To filter impurities from the blood.
To regulate blood pressure in the heart chambers.
What does the term "pulmonary" refer to in the context of the circulatory system?
The heart
The brain
The lungs
The kidneys
Which of the following correctly describes the path of deoxygenated blood from the body to the lungs?
Inferior vena cava → Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery → Lungs
Superior vena cava → Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta → Lungs
Pulmonary vein → Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta → Body
Aorta → Coronary arteries → Capillaries → Coronary veins → Right atrium → Lungs
After blood is oxygenated in the lungs, what is the correct pathway for it to be distributed throughout the body?
Pulmonary Artery → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta
Pulmonary Vein → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta
Pulmonary Vein → Right Atrium → Tricuspid Valve → Right Ventricle → Pulmonary Artery
Lungs → Superior Vena Cava → Right Atrium → Tricuspid Valve → Right Ventricle
How does the heart muscle receive its supply of oxygen and glucose?
Directly from the blood flowing through its chambers.
Through the pulmonary arteries.
Via the coronary arteries, which branch off the aorta.
From the superior and inferior vena cava.
Approximately how many times does the human heart beat per day?
Around 1,000 times
Around 10,000 times
Over 100,000 times
Less than 500 times
What is a potential consequence of an atrial septal defect, which is an opening in the muscular wall separating the right and left sides of the heart?
Increased oxygenation of blood throughout the body.
Improved efficiency of blood pumping.
Mixing of oxygen-rich and oxygen-poor blood.
Faster heart rate but no other issues.
What is the function of blood?
Transportation of oxygen, nutrients, hormones, and waste products
Protection against infections.
Production of red and white blood cells.
Regulation of body temperature.
The body has several organ systems. Which organ system is pictured here?
muscular system
skeletal system
digestive system
circulatory system
respiratory system
nervous system
Select the artery that pumps red blood cells carrying carbon dioxide into the lungs.
(a) is the liquid part of blood.
Plasma
Red blood cells
White blood cells
Platelets
What is the primary function of this body system? The primary function of the (a) system is to deliver (b) and (c) to the body.
Circulatory
Respiratory
Digestive
Nervous
Label the parts of the Blood Vessel Exchange.
Veins
Arteries
Capillaries
Select 3 points where oxygenated blood passes through
Arteries carry oxygenated blood ________ the heart
to
away from
Blood from the Inferior and Superior Vena Cava empties into the:
Right ventricle
Right atrium
Left ventricle
Left atrium
The largest artery in the body is the:
Aorta
Pulmonary Artery
Carotid Artery
Brachiocephalic Artery
What is the difference between the right ventricle and the left ventricle?
The right ventricle pumps oxygenated blood to the body, while the left ventricle pumps deoxygenated blood to the lungs.
The right ventricle pumps deoxygenated blood to the lungs, while the left ventricle pumps oxygenated blood to the body.
The right ventricle is larger than the left ventricle, which is smaller and pumps blood to the lungs.
The right ventricle has thicker walls than the left ventricle, which has thinner walls.
What part of the hearts conduction system is shown in the diagram?
SA node
AV Node
AV bundle
Purkinje Fibers
What part of the hearts conduction system is shown in the diagram?
SA node
AV Node
AV bundle
Purkinje Fibers
What part of the hearts conduction system is shown in the diagram?
SA node
AV Node
AV bundle
Purkinje Fibers
What part of the hearts electrical conduction system "delays" the impulse from the atria to the ventricles?
SA Node
AV Node
AV Bundle
Purkinje Fibers
What part of the hearts electrical conduction system is found in the ventricle muscle walls and is what causes them to contract?
SA Node
AV Node
AV Bundle
Purkinje Fibers
What state best describes plasma?
Liquid
Gas
Solid
What are the ventricles?
bottom left chamber of the heart
upper chambers of the heart
lower chambers of the heart
top right chamber of the heart
During a biology class, Mason is asked which artery is the largest in the human body. Is it true or false that the aorta is the largest artery in the body?
True
False
True or False: the right atrium and left atrium are the 2 chambers on the bottom of the heart
True
False
The colourless fluid part of blood is called...
oxygenated blood
plasma
deoxygenated blood
arterial blood
Which part of the blood transports oxygen to the body's tissues in exchange for carbon dioxide.
White Blood Cells
Red Blood Cells
Platelets
Plasma
A patient’s left side of the heart is not functioning properly. Predict what might happen to the oxygen supply to the body’s cells.
The body’s cells may not receive enough oxygen-rich blood
The lungs will receive more oxygen-rich blood
The heart will stop beating
The valves will stop making the “lub-dub” sound
Explain how the “lub-dub” sound of the heart is produced during the cardiac cycle.
By the valves opening and closing during the cycle
By the contraction of muscles in the legs
By the movement of air in the lungs
By the expansion of the arteries
Explain why the removal of carbon dioxide by the circulatory system is essential for cellular function.
Carbon dioxide is a waste product that, if not removed, can build up and harm cells.
Carbon dioxide is needed for energy production in cells.
Carbon dioxide helps transport oxygen to cells.
Carbon dioxide is used to build new cells.
Which side of the heart pumps blood to the lungs?
Right side
Left side
Both sides
Neither side
Which side of the heart pumps oxygen-rich blood to the rest of the body?
Left side
Right side
Both sides
Neither side
Why is the right side of the heart smaller than the left side?
Because it pumps blood to the whole body.
Because it only pumps blood to the lungs, which requires less force.
Because it does not pump any blood.
Because it is not important for circulation.
