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Anatomy YBOD 200 > Structure of the heart > Flashcards

Structure of the heart Flashcards

1
Q

Blood enters the RA from which structures?

A

SVC,IVC, coronary sinus

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2
Q

Blood passes to the RV through which structure

A

Right AV orifice

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3
Q

What controls the passing of blood from RA to RV

A

Tricuspid valve

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4
Q

What walls is the right atrium made up of?

A

Smooth and rough walls

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5
Q

Smooth wall

A

Sinus Venarum

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6
Q

Rough wall

A

Atrium proper

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7
Q

What separates the smooth from the rough wall internally and externally?

A

In- crista terminalis
Ex- sulci terminalis

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8
Q

Where do the venae cava drain to?

A

Smooth wall of RA

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9
Q

What structures make the rough wall?

A

Pectinate muscles

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10
Q

Where are the pectinate muscle also found?

A

Auricle (overlaps aorta)

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11
Q

What structure separates left and right atria?

A

Interatrial septum

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12
Q

A structure found on the interatrial septum and what does it develop into?

A

Fossa ovalis> foramen ovale

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13
Q

Edge of the fossa ovalis

A

Limbus ovalis

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14
Q

What structure is linked to the RV?

A

Pulmonary trunk, known as conus arteriosus (infundibulum)

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15
Q

What makes the rough wall of RV?

A

Trabeculae carnae (irregular structures)

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16
Q

What do some trabeculae carnae form?

A

Papillary muscles(projections of the RV)

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17
Q

What attaches to the papillary muscles?

A

Chordae tendinae

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18
Q

Chordae tendinae extend from which structure to which one?

A

Papillary muscles to cusps

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19
Q

Papillary muscles divisions

A
  1. Anterior(largest)
    2.Posterior
    3.Septal(small/ absent)
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20
Q

Name the specialized trabeculum and what it does

A

Septomarginal trabeculum (MODERATOR BAND)

Helps the anterior papillary muscle to contract the same time as the other muscles during ventricular contraction

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21
Q

Between which structures does the moderator band form?

A

Anterior papillary muscle and interventricular septum

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22
Q

Function of the tricuspid valve

A

Closes the AV orifice

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23
Q

What structures do valves have?

24
Q

Name cusps of the tricuspid valve

A

Anterior (anterior papillary)
Posterior
Septal

25
Q

What opens into pulmonary trunk?

A

Pulmonary valve

26
Q

Free superior edge of the pulmonary valve has 2 portions, name them

A
  1. Anterior and thick—nodule
  2. Lateral and thin-lunula
27
Q

pulmonary trunk cusps

A

left, right, anterior

28
Q

Name the space found in pulmonary valve cusps

A

Pulmonary sinus

29
Q

Function of the pulmonary sinus

A

Prevents backflow of blood from the pulmonary trunk to the RV

30
Q

Divisions of the LA

A

Anterior half=auricle
Posterior half= 4 pulmonary veins

31
Q

Name the depression opposite floor of fossa ovalis

A

Valve of foramen ovale

32
Q

The portion of the left ventricle immediately below the aortic orifice made of FIBROUS tissue

A

Aortic vestibule

33
Q

Blood enters left ventricle via which structure?

A

Left AV orifice

34
Q

Compare right and left ventricles

A

Trabeculae carnae= fine in LV
Papillary muscles=2 in LV

35
Q

What controls the opening from LV to aorta

A

Aortic valve

36
Q

Cusps of the aortic valve

A

left, right, posterior

37
Q

What is found between the aorta and the cusps

A

Aortic sinus (left, right, posterior)

38
Q

What originates from the aortic sinuses?

A

Left and right coronary arteries

39
Q

What happens to coronary arteries due to aortic sinuses during ventricular contraction

A

Blood is automatically pushed to the arteries

40
Q

What does the collection of dense fibrous connective tissue in a form of 4 rings form?

A

Fibrous annulus

41
Q

Explain the course of right coronary artrery

A

Lies in coronary sulcus (BTW ATRIUM & VENTRICLE)

42
Q

Branches of the right coronary artery

A

Sinu-atrial nodal
Right marginal
Atriventricular nodal
Poster interventricular

43
Q

Structures innervated by right coronary artery

A

RA and RV
Interatrial septum
SA node and AV node
Posteroinferior 1/3 of interventricular

44
Q

Course of the left coronary artery

A

Before the pulmonary trunk and left auricle before entering coronary sulcus

45
Q

Branches of the left coronary artery

A

Left marginal
Anterior interventricular
Circumflex

46
Q

Structures innervated by the left coronary artery

A

LA and LV
Interventricular septum
AV bundle and branches

47
Q

Cardiac veins

A

Great c.v
Middle c.v
Small c.v

48
Q

Great cardiac vein

A

Begins at apex of heart, runs in anterior interventricular sulcus, enters coronary sulcus and enlarges to form coronary sinus

49
Q

Where does the great cardiac vein drain into

A

right atrium

50
Q

Middle cardiac vein

A

Begins at apex of heart, runs in posterior interventricular sulcus

51
Q

Where does the middle c.v drain into

A

coronary sinus

52
Q

Small cardiac vein

A

Begins between right atrium and right ventricle

53
Q

Where does the small c.v drain into

A

Coronary sinus

54
Q

Arteries and their accompanying veins

55
Q

Which vein and artery form the coronary sinus

A

Greater cardiac vein and Anterior interventricular artery

Anatomy YBOD 200 (55 decks)

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