What is the role of the Purkinje fibers in the heart?

To send an electrical pulse causing the ventricles to beat

Why must all cells be within 2 cells of a blood vessel?

To allow diffusion of nutrients and waste over short distances

What is the main function of arteries in the circulatory system?

To carry blood away from the heart

To carry blood towards the heart

What is the primary reason capillaries are so small?

To increase the rate of diffusion

To carry blood under high pressure

To prevent blood from flowing backwards

Arrange the following blood vessels in the correct order of blood flow starting from the heart: Arteries, Arterioles, Capillaries, Venules, Veins.

Arteries → Arterioles → Capillaries → Venules → Veins

Veins → Venules → Capillaries → Arterioles → Arteries

Capillaries → Arteries → Arterioles → Veins → Venules

Arterioles → Arteries → Capillaries → Veins → Venules

Why do veins have thinner walls compared to arteries?

Because veins carry blood under lower pressure

Because veins need to be more elastic

Because veins transport oxygen-rich blood

Because veins are closer to the heart

Which of the following are the cellular components of blood?

Red blood cells, white blood cells, and platelets

Antigens, antibodies, and enzymes

Oxygen, carbon dioxide, and glucose

What is the function of antigens on red blood cells?

To help the body identify the blood as its own

What does it mean if a person is Rh positive?

The Rh antigen is present in their blood

The Rh antigen is absent in their blood

They have both A and B antigens

Why are A and B blood types considered co-dominant?

Both A and B antigens are expressed when present together

Only one antigen is expressed at a time

Why does the heart need oxygen and nutrients?

Because it is a muscle and requires them to function, like any other muscle

Which of the following is considered a heart disease?

Anything that interferes with your heart's ability to pump blood

Any condition that affects your lungs

Any disease that affects your bones

Any infection in the digestive system

Which of the following is a symptom of congestive heart failure?

The heart is not strong enough to pump efficiently

The blood vessels are blocked in the brain

The blood cells do not transport oxygen

What is the main characteristic of anemia?

Red blood cells do not transport enough oxygen

Blood vessel wall bulges outward

What does an electrocardiogram (EKG) record?

Electrical activity in the heart

Why do doctors analyze blood when diagnosing blood conditions?

To check for symptoms present in the blood

Which part of the EKG represents the Q-T interval?

The segment between the start of the Q wave and the end of the T wave

What does the P wave represent in an EKG/ECG?

The beating of the atriums (electrical depolarization)

The resetting of the ventricles electrically

The closing of the heart valves

Which of the following is NOT a symptom of a heart attack?

Pain in the jaw, neck, back, arm, or shoulders

What is the purpose of taking blood thinners as a medication?

To help the blood clot more easily

What is a stent used for in heart surgery?

To reinforce and hold open a blocked blood vessel

When analyzing an EKG/ECG, why do doctors check if the intervals between each component and each complex are consistent?

To check for regular heart rhythm and function

To determine if the patient has high cholesterol

To see if the patient needs surgery

Why is it important for the heart to have more lean tissue than fatty tissue?

It takes more effort for the heart to pump through fatty tissue than lean tissue

Lean tissue makes the heart beat faster

Fatty tissue helps the heart pump more efficiently

Lean tissue increases cholesterol levels

What is the main function of a thoracic surgeon as mentioned in the text?

Operate on the lungs, trachea, or esophagus

Why might a surgeon perform a bypass operation on the heart?

To attach blood vessels that go around a blockage

Which of the following careers is most likely to be involved in diagnostic technology?

Medical Laboratory Technologist

HS20 - Final Review - Unit 4 - Circulatory System

Quiz

•

Health Sciences

•

11th Grade

•

Practice Problem

•

Easy

Robert Webb

Used 13+ times

FREE Resource

Right Ventricle → Right Atrium → Lungs → Left Ventricle → Left Atrium → Body

Left Ventricle → Left Atrium → Lungs → Right Ventricle → Right Atrium → Body

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HS20 - Final Review - Unit 4 - Circulatory System

57 questions

Which of the following is NOT one of the seven functions of the circulatory system?

What is the main function of the heart in the circulatory system?

Which chambers of the heart receive blood?

What is the purpose of valves in the heart?

Which valve is located between the left atrium and the left ventricle?

Explain why the ventricles have larger muscles than the atriums.

Describe the path of blood through the heart, starting from the body.

Which node sends an electric pulse to the atriums causing them to beat?

What is the role of the Purkinje fibers in the heart?

Why must all cells be within 2 cells of a blood vessel?

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