Lecture 6: Heart & Pericardium Flashcards Preview

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Flashcards in Lecture 6: Heart & Pericardium Deck (14)
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1

What is the fossa ovalis formed from and where is it?

The closure of the interatrial septum at birth which was open during fetal development.
Depression in the inter-atrial septum

2

How many papillary muscles are there in the right ventricle?

3

3

What is the name of the valve between the right atrium and right ventricle?

Tricuspid

4

What is the name of the valve between the right ventricle and the pulmonary trunk?

Pulmonary semilunar valve

5

What are the chordae tendinae?

Heart strings that attach the 3 cusps of the tricuspid valve to the 3 papillary muscles

6

What is the crista terminalis?

The ridge running perpendicular to the musculi pectinati
Where the SA node is found

7

What are the two pericardial sinuses?

Transverse
Oblique

8

What is the pericardium innervated by?

Branches of the phrenic nerve
C3, 4, 5,
Anterior to root of the lung

9

Where is pain from the pericardium referred to?

C3, 4, 5 dermatome

10

What are the three layers of the heart?

Endocardium - internal
Myocardium - muscle
Epicardium - outer I.e. Visceral layer of serous membrane (same thing different name)

11

What is the serous pericardium?

Double layered membrane
Two layers
> visceral - lines the surface of the heart
> parietal - fibrous sheath

12

What is the purpose of the pericardium ?

Anchors the heart in place

13

What is the pericardial space?

Allows the heart to move when it beats
Contains a bit of fluid

14

What is the fibrous pericardium?

Thick and dense
Attaches to the central tendon of diaphragm anchors to root of the great vessels