Heart Anatomy Flashcards

1
Q

Name the layers of the heart from inside outwards.

A

Endocardium, myocardium, epicardium/ visceral pericardium, pericardial cavity, parietal pericardium and fibrous pericardium.

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2
Q

What is the heart?

A

A cone shaped muscular pump

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3
Q

Where is the heart located and where does it lie?

A

Located in the thorax between lungs and lies between 2nd - 5th ribs to the left of the midline

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4
Q

Where is the apex of the heart located?

A

In the 5th intercostal space in the midclavicular line

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5
Q

What forms the pericardium?

A

An outer fibrous layer and an inner serous pericardium

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6
Q

Name the main feature of the fibrous pericardium and how it relates to its function

A

Inelastic, this prevents the heart overfilling and anchors it in place

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7
Q

Where is pericardial fluid found and what is its function?

A

It is found in the pericardial cavity and it prevents friction

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8
Q

What are the 3 layers of the heart wall?

A

Endocardium, myocardium and epicardium

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9
Q

What is the myocardium?

A

Cardiac muscle

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10
Q

Name the great vessels in the heart?

A

Superior vena cava
Inferior vena cava
Pulmonary trunk and Arteries
Aorta
Pulmonary veins

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11
Q

Where does the aorta take blood to and from?

A

From the Left ventricle out to systemic circulation

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12
Q

Where do the pulmonary veins take blood to and from?

A

Take oxygenated blood from the lungs into the left atrium

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13
Q

Where does the superior and inferior vena cava move blood to and from?

A

They bring deoxygenated blood from they system circulation into the Right atrium.

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14
Q

Where does the pulmonary artery take blood to and from?

A

Moves deoxygenated blood from the Right ventricle to the lungs.

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15
Q

What side of the heart carries deoxygenated blood?

A

Right side

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16
Q

Which side of the heart carries oxygenated blood?

A

Left side

17
Q

Why is the left ventricle more muscular than the right?

A

Because it needs to contract with more force to move the blood into and around the systemic circulation.

18
Q

Name the AV valves?

A

Tricuspid (right) and bicuspid/ mitral (left)

19
Q

What are the 2 different semilunar valves?

A

Pulmonary and aortic

20
Q

Where is the bicuspid valve located?

A

Between the left atrium and the left ventricle

21
Q

Where is the aortic semilunar valve located?

A

Between the left ventricle and the aorta

22
Q

Where is the tricuspid valve located?

A

Between the right atrium and the right ventricle

23
Q

Where is the pulmonary semi lunar valve located?

A

Between the right ventricle and the pulmonary trunk.

24
Q

What are the AV valves anchored to and by what?

A

Anchored by chordae tendinae to the papillary muscles

25
Q

What does contraction of the papillary muscles do in regard to the AV valves?

A

Prevents eversion of the valves and therefore back flow of blood into the atria.

26
Q

What divides the right and left ventricle?

A

The ventricular septum

27
Q

What are trabeculae carnae?

A

Rounded or irregular muscular columns (meaty ridges) found in the ventricles.