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Thorax ~ Anatomy > Pericardium & Heart > Flashcards

Pericardium & Heart Flashcards

1
Q

Septum transversum is

A

Undivided part of Lateral mesoderm

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2
Q

Septum transversum contributes to →

A
  1. Central tendon of diaphragm
  2. Connective tissue of liver
  3. Fibrous Pericardium
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3
Q

Pericardium is;

A

FibroSerous Sac

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4
Q

Fibrous sac of pericardium is adherent to

A

Central tendon of diaphragm

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5
Q

Fibrous sac is derived from;

A

Septum transversum

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6
Q

Serous sac; derived from

A

Parietal layer → from Parietal layer of Lateral mesoderm

Visceral layer → from Splanchnic layer of Lateral mesoderm

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7
Q

Nerve supplying the Fibrous and Parietal layer of Pericardium;

A

Phrenic nerve

The pain in Pericarditis is mediated by Phrenic Nerve,
And referred pain to Tip of the Shoulder

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8
Q

Visceral layer of pericardium is supplied by (nerve)

A

Autonomic nervous system

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9
Q

Spaces in the Pericardium;

A

Transverse sinus and Oblique sinus

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10
Q

Boundaries of Transverse sinus;

Anteriorly -

Posteriorly -

Below -

A

Anteriorly - Pulmonary Trunk and Ascending Aorta

Posteriorly - Superior vena cava

Below - Left atrium

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11
Q

Boundaries of Oblique sinus;

Anteriorly -

Posteriorly -

On either side -

A

Anteriorly - Left atrium

Posteriorly - Parietal Pericardium

On either side - 2 Pairs of Pulmonary veins

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12
Q

Chamber of Heart which is in relation for both Transverse and Oblique sinus

A

Left atrium

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13
Q

Posterior surface of heart is formed by;

A

Right atrium 1/3

Left atrium 2/3

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14
Q

Diaphragmatic surface of heart is formed by;

A

Left ventricle 2/3

Right ventricle 1/3

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15
Q

Anterior surface of heart is formed by;

A
  • Right Ventricle 2/3
  • Left Ventricle 1/3
  • Right atrium
  • Right auricle
  • Left auricle
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16
Q

Right Border of heart formed by;

A

Right atrium

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17
Q

Left Border of heart formed by;

A

Left Ventricle - Mainly

Left atrium appendages - Slightly

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18
Q

Coronary arteries derived from

A

Aortic sinus

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19
Q

Left coronary artery arise from

A

Left posterior aortic sinus

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20
Q

Right coronary artery arise from

A

Anterior aortic sinus

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21
Q

Non coronary sinus is

A

Right Posterior Aortic Sinus

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22
Q

Branches of RCA;

A
  • Right Conus Artery
  • SA Nodal Artery
  • Right Marginal Artery / Acute Marginal Artery
  • PIVA → Septal branch
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23
Q

Right Conus Artery Supplies;

A

Infundibulum of Right Ventricle

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24
Q

Other name for Right Conus Artery;

A

3rd Coronary Artery

When it arise from Aortic sinus, then it is called as 3rd Coronary Artery

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25
Q

What is Annulus of Vieussens

A

Is Anastomosis between Left Conus Artery and Right Conus Artery

LCA → left conus artery
RCA → right conus artery

26
Q

SA Nodal artery is a branch of;

A

In 65% → branch of RCA

In 35% → branch of LCX

27
Q

SA node supplies;

A

It ascends between Aorta and Right Auricle, turns laterally and goes to SVC opening → SA NODE

28
Q

Other name for Right Marginal Artery;

A

Acute Marginal Artery

Follows inferior border upto Apex

29
Q

PIVA supplies;

And its Branch;

A

Diaphragmatic Surface of RV/LV

Septal branch → supplies Post. 1/3 of IV Septum

30
Q

Inverted course of Septal Branch (of PIVA) supplies;

A

AV Node

31
Q

Branches of LCA;

A

AIVA and LCX

32
Q

Septal branch of AIVA Supplies;

A

Anterior 2/3 of Interventricular septum

33
Q

LCX anastomoses at Crux with

A

RCA

34
Q

Branches of LCX

A
  1. Supplies LA and LV
  2. Left marginal artery / Obtuse marginal artery
  3. SA Nodal artery in 35%
  4. Atrial branch / Kugal’s artery
35
Q

How Kugal’s anastomosis formed;

A

Kugal’s artery / Atrial branch of LCX anastomosis with Atrial branch of RCA

36
Q

In Left Dominance, PIVA arise from

A

LCX

In left dominance entire ventricle and entire Ventricular septum is supplied by LCA

37
Q

In majority of cases PIVA arise from

A

RCA then it is called as Right Dominance

38
Q

If Two PIVA arise from RCA and LCX, is called

A

Balanced dominance

39
Q

The only part of Conducting system not supplied by RCA;

A

Right Bundle Branch

It is supplied by only LCA

40
Q

Location of SA Node;

A
  1. Junction of SVC opening into Right atrium
  2. Junction of Post. Smooth wall and Ant. Rough wall of Right atrium
  3. Upper end of Crista terminalis
41
Q

Location of AV node;

A

In Triangle of Koch

42
Q

Right Bundle Branch is present in;

A

Moderator band / Supramarginal Trabeculae (Right ventricle)

43
Q

Majority of blood from the heart is drained by

A

Coronary sinus

44
Q

Coronary sinus; Derived from

A

Left horn of Sinus Venosus

45
Q

Coronary sinus drains into

A

Posterior wall of Right atrium

46
Q

Opening of Coronary sinus is Guarded by

A

Thebesian’s valve

47
Q

Tributaries of Coronary Sinus;

A
  1. Great Cardiac Vein
  2. Middle Cardiac Vein
  3. Small Cardiac Vein
  4. Posterior vein of LV
  5. Oblique vein of RA
48
Q

Vein accompanying the AIVA and LCX artery

A

Great Cardiac Vein accompanies AIVA and LCX artery.

49
Q

Vein accompanying the PIVA;

A

Middle Cardiac vein accompanies PIVA

50
Q

Vein accompanying the Right Coronary Artery;

A

Small Cardiac Vein

51
Q

Vein which open directly into Anterior wall of Right Atrium

A

Anterior Cardiac Vein

52
Q

Which has Larger Diameter;

RCA / LCA

A

LCA > RCA

53
Q

Posterior Part of Right Atrium is;

Derived from

A

Smooth part

Derived from Sinus venosus

54
Q

Anterior part of Right Atrium is

Derived from

A

Rough part

Derived from Primitive antrum

55
Q

Crista terminalis is present between

A

Between Anterior (Rough) and Posterior (Smooth) Part of Right Atrium

56
Q

Eustachian valve guards

A

IVC Opening

57
Q

Valve guarding opening of Coronary Sinus

A

Thebesian valve

58
Q

Boundaries of Triangle of Koch;

A

Base of Septal Leaflet

Tendon of Todaro

Coronary Sinus opening

59
Q

Triangle of Koch Contains

A

AV Node

60
Q

Fossa ovalis derived from

A

Septum primum,

Floor of Fossa Ovalis is formed by Septum Primum

61
Q

Limbus Fossa Ovalis derived from;

A

Septum secundum

62
Q

Right Ventricle is divided into

A

Two Parts;

  1. Inflow (Rough) - receives blood from Right Atrium
  2. Outflow (Smooth) - also called as Conus (infundibulum) carried blood to Pulmonary trunk

Thorax ~ Anatomy (2 decks)

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