Heart Flashcards

1
Q

What are the Surfaces of the Heart and what comprises those surfaces?

A
  1. Anterior (Sternocostal): Both Ventricles, Right more than left
  2. Posterior (Base): Left Atrium and 4 pulmonary arteries
  3. Inferior (Diaphragmatic): Both Ventricles, Left more than right
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2
Q

What are the Margins of the Heart?

A

Right and Left Outline

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3
Q

Where is the Apex of the Heart Located?

A

In the 5th Intercostal Space, 3 and a half inches from the midline, at the Midclavicular Line (Medial to the Left nipple)

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4
Q

What composes the Fibroserous Membrane of the Heart?

A
  1. Fibrous Pericardium
  2. Parietal Pericardium
  3. Visceral Pericardium
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5
Q

What is the fibrous CT surrounding the heart called?

A

The Fibrous Pericardium

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6
Q

Where is the Fibrous Pericardium located?

A

It is glued to the parietal pleura on each side, posterior to the esophagus, anterior to the anterior mediastinal fat, and Superior to the endothoracic fascia on the diaphragm

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7
Q

Pericarditis

A

Inflammation of the Pericardium from external insult or internal pathology

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8
Q

Pericardial Effusion

A

Fluid in the Pericardial Cavity

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9
Q

What is a Hemopericardium and what may it result in?

A
  • Blood in the Pericardial Cavity

- May result in Cardiac Tamponade

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10
Q

Cardiac Tamponade

A

Condition in which the heart stops beating because of the excessive amount of blood and thus pressure in the pericardial cavity

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11
Q

Transverse Pericardial Sinus

A

Space behind Pulmonary Trunk and Arch of Aorta where ligature or clamp is placed, tubes of a coronary bypass machine are inserted, ligature is tightened to stop or redirect blood flow in those arteries, and then coronary procedure can be performed e.g. CABG

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12
Q

What are the Openings and Valves of the Right Atrium?

A
  1. Thebesian Veins
  2. IVC with small valve
  3. SVC
  4. Coronary Sinus with small valve
  5. Right AV Valve/Tricuspid
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13
Q

What are the Thebesian Veins?

A

Veins draining the myocardium and emptying into ALL chambers of the heart

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14
Q

What are the Openings and Valves of the Left Atrium?

A
  1. Thebesian Veins
  2. Left AV Valve/Mitral Valve/Bicuspid
  3. 4 Pulmonary Veins
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15
Q

What are the Auricles?

A

Pouches on the external surface of the Right and Left Atrium full of Pectinate Muscles

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16
Q

Sulcus Terminalis

A

Depression on the Anterolateral exterior wall of the Right atrium

17
Q

Crista Terminalis

A

Muscular Ridge on the inside of the anterolateral wall of the Right Atrium

18
Q

Pectinate Muscles

A

Muscles on the interior wall of the Right Atrium, anterior to the Crista Terminalis

19
Q

Sinus Venarum

A

Smooth internal wall of the Right atrium, posterior to the Crista Terminalis

20
Q

Fossa Ovalis

A

Depression in the Sinus Venarum where 25% of adults have a Probe Patent Foramen Ovale

21
Q

Probe Patent Foramen Ovale

A

Hole in the Fossa Ovalis of the Sinus Venarum that is present in 25% of adults

22
Q

What is the structure of the Left Atrium?

A

Smooth walled with NO Pectinate muscles

23
Q

What are the Openings and Valves of the Left Ventricle?

A
  1. Thebesian Veins
  2. Left AV Valve/Mitral Valve/Bicuspid
  3. Aortic Semilunar Valve
24
Q

What are the Openings and Valves of the Right Ventricle?

A
  1. Thebesian Veins
  2. Right AV Valve/Tricuspid
  3. Pulmonary Semilunar Valve
25
Q

Trabeculae Carneae

A

Irregular Muscular Ridges extending into the ventricles of the heart (pillars, columns, or bridges)

26
Q

What are Papillary Muscles? How many do the Right and Left Ventricles have?

A
  • Muscles of the Ventricles attaching to the Chordae Tendinea; Trabeculae covered by endocardium
  • The Right Ventricle has 3 and the Left Ventricle has 2.
27
Q

Septomarginal Trabeculae/Moderator Band

A

Connects 1 papillary muscle in the Right Ventricle to the interventricular septum

28
Q

Conus Arteriosus

A

Narrowing down of the Right Ventricle as it enters the Pulmonary Trunk

29
Q

Coronary (Atrioventricular) Groove

A

Groove Separating Ventricles and Atria of the heart

30
Q

Interventricular Grooves

A

Anterior and Posterior Interventricular Grooves separating the ventricles

31
Q

Types of Fat

A
  1. Epicardial: Deep to Visceral Pericardium

2. Extrapericardial: In Fibrous Pericardium

32
Q

Valvular Apparatus of AV Valves

A
  1. Fibrous Ring: Dense CT
  2. Valve Proper/Cusps: 3 in Rigth Ventricle and 2 in Left Ventricle
  3. Chordae Tendinea
  4. Papillary Muscles: 3 in Right Ventricle and 2 in Left ventricle; prevent prolapse
33
Q

Valvular Apparatus of Semilunar Valves

A
  1. 3 Cusps: Flaps or “Pocket Valves”
  2. 1 Nodule and 2 Lunula per cusp
  3. 3 Sinuses: Pulmonary or Aortic
34
Q

When do the Coronary Arteries fill?

A

When the Left Ventricle Relaxes

35
Q

Where is the SA Node located?

A

Anterolateral surface of the heart near the junction of the SVC and the Right Atrium (Superior to the Sulcus Terminalis)

36
Q

Where is the AV Node located?

A

In the posteroinferior interatrial septum

37
Q

Where are the Sympathetics and Parasympathetics to the Heart from?

A
  • Sympathetics: Cervical and Thoracic Ganglia

- Parasympathetics: Vagus Nerve