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[06] Cardiovascular System > [02] Structure and Function of the Heart > Flashcards

[02] Structure and Function of the Heart Flashcards

1
Q

What are the four chambers of the heart?

A
  • Right atrium
  • Right ventricle
  • Left atrium
  • Left ventricle
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2
Q

What are the two upper chambers of the heart called?

A

Atria

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3
Q

What are the two lower chambers of the heart called?

A

Ventricles

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4
Q

How does the heart get its own supply of blood?

A

Through the coronary arteries

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5
Q

What separates the right and left side of the heart?

A

A wall called the septum

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6
Q

What is the role of valves in the heart?

A

They ensure one-way blood flow through the heart

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7
Q

What are the names of the heart valves?

A
  • Tricuspid valve
  • Pulmonary valve
  • Mitral (Bicuspid) valve
  • Aortic valve
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8
Q

What is the function of the right atrium?

A

It receives deoxygenated blood from the body through the vena cava

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9
Q

What is the function of the right ventricle?

A

It pumps deoxygenated blood to the lungs through the pulmonary artery

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10
Q

What is the function of the left atrium?

A

It receives oxygenated blood from the lungs through the pulmonary veins

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11
Q

What is the function of the left ventricle?

A

It pumps oxygenated blood to the body through the aorta

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12
Q

What initiates the heartbeat?

A

A group of cells in the right atrium called the sinoatrial (SA) node

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13
Q

What is the role of the atrioventricular (AV) node?

A

It delays the electrical signal from the SA node before it passes to the ventricles

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14
Q

What is the pathway of electrical conduction in the heart?

A

SA node → AV node → Bundle of His → Purkinje fibers

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15
Q

What is the result of the electrical signal in the heart?

A

It causes the heart muscles to contract and pump blood

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16
Q

What are the main phases of the cardiac cycle?

A
  • Diastole → relaxation and filling of the heart
  • Systole → contraction and ejection of blood
17
Q

What is stroke volume?

A

The amount of blood pumped by the left ventricle of the heart in one contraction

18
Q

What is heart rate?

A

The number of heartbeats per minute

19
Q

What is cardiac output?

A

The volume of blood the heart pumps per minute (Heart rate x Stroke volume)

[06] Cardiovascular System (7 decks)

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