WorksheetsCardiovascular System Quiz
Total questions: 80
Worksheet time: 40mins
What is the primary function of the heart in the cardiovascular system?
To filter blood
To drive blood into and through the arteries
To produce blood cells
To absorb nutrients from digested food
What separates the right side of the heart from the left side?
A muscular valve
A solid wall
A layer of pericardial fluid
A series of blood vessels
What prevents the blood on the right side of the heart from coming into contact with the blood on the left side?
Aorta Superior
Septum
Tricuspid valve
Right pulmonary artery
Which valve is also known as the main valve in the heart?
Tricuspid valve
Pulmonary (semi-lunar) valve
Aortic (semi-lunar) valve
Bicuspid valve
What is the name of the large vein that brings deoxygenated blood from the body to the heart?
Aorta Superior
Left atrium
Vena cava
Right pulmonary veins
Which of the following carries oxygenated blood away from the heart?
Right ventricle
Right pulmonary artery
Aorta Superior
Right pulmonary veins
Which valve separates the right ventricle from the pulmonary artery?
Tricuspid valve
Pulmonary (semi-lunar) valve
Aortic (semi-lunar) valve
Bicuspid valve
What is the function of the right atrium and right ventricle in the heart?
They supply blood to the body at high pressure.
They supply blood to the lungs at low pressure.
They receive blood from the lungs at high pressure.
They receive blood from the body at low pressure.
When the chambers of the left side of the heart are full, what action does the heart take?
The heart relaxes and allows blood to flow back into the lungs.
It contracts simultaneously with the right side, acting as a high-pressure pump.
The left side of the heart pumps blood to the pulmonary artery.
The heart stops momentarily before pumping blood.
What is the role of the left side of the heart in the circulatory system?
It supplies oxygenated blood to the lungs.
It receives deoxygenated blood from the body tissues.
It supplies oxygenated blood to the body tissues such as muscle cells.
It pumps deoxygenated blood to the pulmonary vein.
After oxygen passes from the blood to the cells, what substance is taken on board by the blood?
Glucose
Nutrients
Carbon dioxide
Plasma
Where does the blood return after it has circulated through the body?
Left atrium of the heart
Right atrium of the heart
Pulmonary artery
Aorta
What is the function of the coronary arteries?
They pump blood to the pulmonary circulation for the lungs.
They receive deoxygenated blood from the body or the lungs.
They supply oxygenated blood to the heart muscle.
They prevent blood from flowing backwards into the right atrium.
Which chambers of the heart have thicker walls?
Atria
Ventricles
Coronary arteries
Pulmonary veins
What is the role of the bicuspid (mitral) valve?
It allows blood to flow in one direction from the left atrium to the left ventricle.
It pumps blood to the systemic circulation for the body.
It receives oxygenated blood from the pulmonary veins.
It prevents blood from flowing backwards into the left ventricle from the aorta.
Where does the aorta carry oxygenated blood to?
Only to the lungs.
To all parts of the body except the lungs.
Only to the heart muscle.
Only to the right atrium of the heart.
Which valve is situated between the right ventricle and the pulmonary artery?
Bicuspid (mitral) valve
Aortic valve
Tricuspid valve
Pulmonary valve
What is deoxygenated blood?
Blood with an excess of oxygen
Blood without any carbon dioxide
Blood without oxygen (containing carbon dioxide)
Blood that is found only in the heart
What does the inferior vena cava do?
Carries oxygenated blood to the heart
Receives deoxygenated blood from the upper body to empty into the left atrium
Receives deoxygenated blood from the lower body to empty into the right atrium of the heart
Transports nutrients to the heart
Which vessel carries oxygenated blood from the lungs to the left atrium of the heart?
Inferior vena cava
Pulmonary artery
Pulmonary vein
Aorta
What is unique about the pulmonary artery compared to other arteries?
It carries oxygenated blood
It carries blood at a lower pressure
It is the only artery that carries deoxygenated blood
It connects directly to the heart's right ventricle
What is the approximate total length of arteries, arterioles, capillaries, venules, and veins in the human body?
Around 96,000 km
Around 60,000 km
Around 100,000 km
Around 80,000 km
What color does blood appear when flowing through the arteries due to its oxygenation?
Darker shade of red than oxygenated blood
Bright red
Blue
Purple
With the exception of which artery do all arteries carry oxygenated blood?
Aorta
Carotid artery
Pulmonary artery
Femoral artery
What are the two major properties of arteries?
Permeability and flexibility
Elasticity and contractility
Rigidity and opacity
Thickness and transparency
What happens to the diameter of arterioles leading to muscles during exercise?
It decreases
It remains the same
It dilates, or gets wider
It becomes rigid
What is the primary function of arterioles?
To carry blood away from the heart
To control blood distribution by changing their diameter
To connect arteries and veins
To maintain blood pressure at a constant level
Capillaries are known for connecting which of the following?
Arteries and muscles
Arteries and veins
Veins and nerves
Muscles and nerves
What is the primary function of capillaries in the cardiovascular system?
To pump blood throughout the body
To allow the diffusion of oxygen and nutrients required by the body's cells
To carry deoxygenated blood back to the heart
To regulate body temperature
Compared to veins and arteries, the walls of capillaries are:
Thicker and less permeable
The same thickness but more permeable
Only one cell thick, allowing nutrients, oxygen, and waste products to pass through
Multiple cells thick, preventing any exchange of substances
What is the role of veins in the cardiovascular system?
To facilitate arterial blood flow
To supply oxygen to the heart
To facilitate venous return, the return of deoxygenated blood to the heart
To directly supply blood to the capillaries
What helps to prevent backflow of blood in the veins when muscles relax?
Capillaries
Arterial valves
Pocket valves
The heart's pumping action
Which of the following are branches of veins that extend to the capillary network?
Arterioles
Venules
Capillaries
Lumen
What type of tissue makes up the middle layer of an artery?
Elastic and collagenous tissue
Endothelium
Smooth muscle and elastic tissue
Fibrous tissue
What is the shape of the lumen in an artery?
Round
Oval
Irregular
Square
Which of the following is a characteristic of the outer layer of a vein?
Smooth muscle and elastic tissue
Elastic and collagenous tissue
Endothelium
Muscle layer lining
What is the shape of the lumen in a vein?
Round
Oval
Triangular
Hexagonal
What is the primary function of veins in the circulatory system?
Carry blood from the heart to the tissues of the body
Carry blood from the tissues of the body to the heart
Transport oxygenated blood under high pressure
Connect capillaries to arteries
Which vessels are responsible for carrying blood away from the heart to the tissues of the body?
Veins
Venules
Arteries
Capillaries
Compared to veins, arteries have:
Less muscular walls and more valves
More muscular walls and no valves
Lower blood pressure and more elastic fibers
Higher blood pressure and less elastic fibers
What is the role of venules in the circulatory system?
They carry oxygenated blood under high pressure.
They connect the capillaries to the veins and transport deoxygenated blood under low pressure.
They prevent the backflow of blood.
They carry blood from the heart to the rest of the body.
What is the main function of red blood cells (erythrocytes)?
To protect the body from infections
To clot blood and prevent blood loss
To carry oxygen to all living tissue
To carry waste products to the kidneys and liver
What is the primary function of platelets (thrombocytes)?
To carry oxygen to all living tissue
To clot blood and prevent blood loss
To destroy and remove pathogens
To carry carbon dioxide and nutrients
What percentage of plasma is water?
About 70%
About 80%
About 90%
About 60%
During exercise, if the cardiovascular system cannot meet the increased demands, what is the result?
The body will produce less carbon dioxide
Blood will clot more easily
Fatigue will occur in the muscles and performance will deteriorate
White blood cells will increase in number
Where do white blood cells (leucocytes) originate?
In the liver
In the bone marrow
In the bloodstream
In the kidneys
What is the role of the cardiovascular system during exercise in terms of thermoregulation?
To increase body temperature
To ensure thermal balance and prevent overheating
To decrease blood flow to active muscles
To restrict gaseous exchange in muscles
What happens to blood vessels near the skin during exercise due to vasodilation?
They constrict and limit blood flow
They decrease in diameter
They increase in diameter and allow more blood to flow to the area
They stop blood flow completely
What is the result of vasoconstriction of blood vessels near the skin?
Decrease in body temperature as heat is carried to the skin surface
Increase in body temperature as heat loss is reduced
Increase in blood flow to the skin
Activation of gaseous exchange in the muscles
What is the role of platelets in the blood clotting process?
They form a plug at the site of damage to a blood vessel.
They carry oxygen to the damaged area.
They dissolve the fibrin clot after the vessel is repaired.
They initiate the inflammatory response.
Which components are known as coagulation factors?
Red blood cells
Platelets
Plasma components
White blood cells
What is the function of fibrin in the clotting process?
It strengthens the platelet plug.
It transports nutrients to the damaged area.
It signals the immune system to respond.
It acts as an anticoagulant.
How does the cardiovascular system contribute to the clotting process?
By providing a constant supply of blood to the area.
By cooling down the temperature at the site of injury.
By transporting clotting factors away from the site of injury.
By increasing blood pressure to prevent blood loss.
Why are the functions of the cardiovascular system important to sports performance?
They ensure proper clotting during injuries.
They provide the muscles with necessary oxygen and nutrients.
They help in the digestion of food for energy.
They regulate body temperature through sweating.
What is commonly referred to as the heart's pacemaker?
Atrioventricular node
Bundle of His
Sinoatrial node
Purkinje fibres
What is the role of the atrioventricular node (AVN) in the cardiac cycle?
It contracts the ventricles.
It acts as a buffer to slow down the signal from the sinoatrial node.
It sends an impulse to the atria to contract.
It is responsible for transporting the electrical impulses from the ventricles.
Where are the Bundle of His and Purkinje fibres located?
In the walls of the atria
In the walls of the ventricles and septum
In the right atrium
At the top of the heart
What is the sequence of the heart's electrical system that makes the cardiac cycle possible?
Sinoatrial node → Atrioventricular node → Bundle of His → Purkinje fibres
Atrioventricular node → Sinoatrial node → Purkinje fibres → Bundle of His
Bundle of His → Sinoatrial node → Atrioventricular node → Purkinje fibres
Purkinje fibres → Bundle of His → Atrioventricular node → Sinoatrial node
What is the role of the sympathetic nervous system during exercise and sport?
It relaxes the body and inhibits or slows many high energy functions.
It causes the heart to beat faster and lungs to work harder to produce more energy and meet the demands of the exercise.
It helps the body to slow down to its normal resting levels after exercise.
It continues to elevate the heart rate if the parasympathetic nervous system did not function.
What is the function of the parasympathetic nervous system after exercise?
It prepares the body for intense physical activity and is often referred to as the 'fight or flight' response.
It causes the heart to beat faster and lungs to work harder.
It helps the body to slow down to its normal resting levels.
It continues to elevate the heart rate indefinitely.
What is the primary reason muscles require a continual supply of nutrients and oxygen during exercise?
To support normal activities at work or rest
To support energy production for muscle contraction
To increase the heart rate for better performance
To prepare for the anticipatory response
What is known as an anticipatory response in the context of exercise?
A decrease in heart rate after exercise
An increase in heart rate during exercise
An increase in heart rate just before exercise
A decrease in heart rate just before exercise
What happens to your heart rate when you engage in short sprint events?
It decreases significantly
It remains constant
It shows the greatest anticipatory heart-rate response
It increases only after the event is over
Cardiac output is the product of which two factors?
Heart rate and blood pressure
Stroke volume and blood pressure
Heart rate and stroke volume
Stroke volume and respiratory rate
What are the two forces that result in blood pressure?
Systolic and diastolic pressure
Cardiac and respiratory pressure
Muscular and skeletal pressure
Ventricular and atrial pressure
During exercise, what happens to systolic blood pressure?
It decreases
It stays the same
It increases
It fluctuates unpredictably
What happens to diastolic blood pressure during exercise?
It increases significantly
It stays the same or decreases slightly
It drops to zero
It doubles in value
What mechanism does the body use to ensure that working muscles receive the maximum amount of oxygenated blood during exercise?
Vasodilation and vasoconstriction
Blood pooling and clotting
Heart rate reduction and increase
Arterial stiffening and relaxation
What is cardiac hypertrophy?
The reduction of heart size over time
The enlargement of your heart over a long period of time
The decrease in the strength potential of heart contractions
The thinning of the heart walls
What will specifically thicken as a result of cardiac hypertrophy due to exercise?
The wall of the right ventricle
The wall of the left atrium
The wall of the left ventricle
The wall of the right atrium
What is stroke volume?
The rate at which the heart beats
The pressure exerted by the blood on the walls of the arteries
The amount of blood that can be ejected from the heart in one beat
The total volume of blood in the body
What is the result of cardiac hypertrophy and an increase in stroke volume through long-term exercise on resting heart rate?
Increase in resting heart rate
No change in resting heart rate
Decrease in resting heart rate
Irregular resting heart rate
How does regular exercise affect blood pressure in the long term?
Causes a permanent increase in blood pressure
Has no effect on blood pressure
Contributes to lowering blood pressure
Leads to unpredictable changes in blood pressure
What is indicated by a quicker return to normal heart rate after exercise?
Decreased cardiovascular fitness
Increased risk of heart disease
Lower efficiency in the cardiovascular system
Higher cardiovascular fitness
What physiological change occurs in the skeletal muscle and alveoli due to long-term aerobic exercise?
Decrease in the number of capillaries
Increase in the number of capillaries
No change in the number of capillaries
Reduction in blood flow
What is the effect of an increase in blood volume on the body during exercise?
Decreases the body's ability to regulate body temperature
Reduces the amount of oxygen delivered to muscles
Enhances the delivery of oxygen to muscles and improves body temperature regulation
Causes a decrease in the efficiency of nutrient delivery
What is meant by 'cardiac output'?
The amount of blood the heart pumps in one minute
The rate at which the heart beats
The volume of blood in the body
The pressure of blood against the arterial walls
Which of the following is a long-term adaptation affecting your cardiac output due to an exercise programme?
Decreased heart rate at rest
Increased blood pressure
Reduced number of red blood cells
Lowered oxygen uptake
What is Sudden arrhythmic death syndrome (SADS)?
A condition that improves cardiovascular performance
A type of heart attack experienced by athletes
A genetic heart condition that can cause sudden death in young, apparently healthy people
A syndrome caused by long-term exposure to high altitudes
Before starting a new training programme, especially if you have not exercised for a long period, what is recommended?
Taking a fitness test
Seeing a doctor to get checked over
Starting with high-intensity workouts
Signing up for a sports competition
