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Anatomy CVS med > Chambers of the Heart > Flashcards

Chambers of the Heart Flashcards

1
Q

The heart is divided by

A

vertical septa

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2
Q

The heart is divided into

A

four chambers ( the right and left atria and the right and left ventricles)

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3
Q

right and left atria شو مالهم

A

The right atrium lies anterior to the left atrium

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4
Q

right and left ventricles شو مالهم

A

The right ventricle lies anterior to the left ventricle

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5
Q

The cavity of right atrium is divided

into

A

2 continuous spaces.

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6
Q

The separation between these 2

spaces marked

A

Externally

Internally

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7
Q

The separation between these 2

spaces marked Externally by

A

a vertical groove (sulcus terminalis) extending from the right side of SVC to
the right side of IVC.

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8
Q

The separation between these 2

spaces marked Internally

A

this division is indicated by a smooth muscular ridge (crista terminalis).

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9
Q

spaces of cavity of Right Atrium

A

Space posterior to crista terminalis

Space anterior to crista terminalis

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10
Q

Space anterior to crista terminalis

A

(Atrium proper)

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11
Q

Space posterior to crista terminalis name

A

(sinus of venae cavae)

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12
Q

Space anterior to crista terminalis includes

A

Right auricle.

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13
Q

Space anterior to crista terminalis

(Atrium proper) characteristic

A

Rough and covered by bundles of muscle

fibres (musculi pectinati).

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14
Q

ØThe blood leaves right atrium to

right ventricle via

A

tricuspid valve.

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15
Q

Space posterior to crista terminalis

(sinus of venae cavae) characteristic

A

Has smooth, thin walls.

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16
Q

the right atrium separated from left atrium by

A

The interatrial septum

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17
Q

The interatrial septum has an oval depression called

A

Fossa ovalis

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18
Q

The margin of oval depression is called

A

Anulus ovalis (limbus of fossa ovalis)

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19
Q

The fossa ovalis marks the location

of the embryonic

A

foramen ovale

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20
Q

foramen ovale is an important part of

A

fetal circulation
→ allows oxygenated blood (coming to right atrium through IVC) to pass directly to the left atrium and so bypass the lungs, which are nonfunctional before birth

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21
Q

Openings in right atrium

A 
SVC
IVC
Coronary sinus
Right atrioventricular orifice
Openings for small veins.
22
Q

SVC Opening

A

It returns the blood to the heart from the upper half of the body.

23
Q

IVC Opening

A

it is guarded by a rudimentary, nonfunctioning valve.

24
Q

Coronary sinus Opening

A

has a well-defined valve

25
Q

Right atrioventricular orifice Opening lies anterior to

A

IVC opening

26
Q

Right atrioventricular orifice is surrounded

by

A

a fibrous ring which gives attachment to the tricuspid valve.

27
Q

The right ventricle communicates with the right atrium through the

A

atrioventricular orifice.

28
Q

The right ventricle communicates with the pulmonary trunk through the

A

pulmonary orifice

29
Q

infundibulum (conus arteriosus).

A

As the cavity approaches the pulmonary orifice it becomes funnel shaped,

30
Q

wall of right ventricle is

A

thinner than that of left ventricle

31
Q

walls of right ventricle contain

A

muscular irregular projections called trabeculae carneae

32
Q

type of papillary muscles

A
  1. Anterior papillary muscle
  2. Posterior papillary muscle
  3. Septal papillary muscle
33
Q

Trabeculae carneae with one end attached to

A

ventricular surface

34
Q

papillary muscles

A

Trabeculae carneae with one end attached to ventricular surface

35
Q

Each papillary muscle is attached to

A

the cusps of tricuspid valve by tendinous threads called chordae tendineae.

36
Q

chordae tendineae.

A

Each papillary muscle is attached

to the cusps of tricuspid valve by tendinous threads

37
Q

Cavity of right ventricle

A

سلايد 23

38
Q

Left atrium of the heart forms

A

the greater part of base of heart.

39
Q

Left atrium of the heart wall is

A

smooth except for small musculi pectinati in the left auricle

40
Q

Left atrium of the heart Receives

A

4 pulmonary veins which have no valves.

41
Q

Left atrium of the heart Sends blood to

A

left ventricle through the left atrioventricular orifice which is guarded by mitral valve

42
Q

The interatrial septum separates

A

Rt & Lt atria

43
Q

depression in interatrial septum

A

valve of foramen ovale

44
Q

Left ventricle of the heart wall is

A

thicker than that of right ventricle.

45
Q

Left ventricle of the heart wall contains

A
  1. trabeculae carneae.

2. 2 large papillary muscles (anterior & posterior)

46
Q

Left ventricle of the heart receives blood from

A

left atrium through left atrio-ventricular

orifice which is guarded by mitral valve.

47
Q

ØThe blood leaves Left ventricle of the heart

A

to the ascending aorta through the aortic

orifice

48
Q

interventricular septum separates

A

the right & left ventricles.

49
Q

interventricular septum

A

■ a muscular part.

■ a membranous part.

50
Q

2 large papillary muscles (anterior & posterior) are attached by

A

chordae tendineae to cusps of mitral valve

Anatomy CVS med (15 decks)

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