ch 19 pt 3 Flashcards by Maya Huggler

Q

What is the coronary sulcus?

A

Separates atria from ventricles

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Q

What is the interventricular sulci?

A

Separates left from right ventricles

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Q

What are the 3 layers of the heart wall?

A

Epicardium, myocardium, endocardium

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Q

What is interatrial septum?

A

Separates left atrium from right atrium

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Q

What is pectinate muscles?

A

Ridges on anterior wall and within auricle

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Q

What is fossa ovalis?

A

Oval depression on interatrial septum

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Q

What is tendinous cords?

A

Heart strings

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Q

What do atrioventricular valves do?

A

Prevent backflow to atria

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Q

What do semilunar valves do?

A

Prevent backflow to ventricles

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Q

What is valvular stenosis?

A

Resistance to blood flow

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Q

What do fibrous skeleton do?

A

Form fibrous rings to anchor valves

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Q

What is optimal length in cardiac muscle?

A

When stretched by blood

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Q

What are cardiac cells connected with?

A

Intercalated discs

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Q

What is desmosomes?

A

Cells join together

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Q

What is gap junctions?

A

Allows for holes for ion to flow through chambers

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