Cardio

Question 1

Most anterior chamber of the heart

Answer 1

Right ventricle

Question 2

Heart chamber that is subcarinal and midline in the thorax; supplied by the right and left superior and inferior pulmonary veins

Answer 2

Left atrium

Question 3

Forms the right border of the cardiac silhouette in the frontal projection

Answer 3

Right atrium, superior and inferior vena cava

Question 4

Forms the left border of the heart on frontal projection

Answer 4

Pulmonary artery, Aortopulmonary window, aortic knob, left atrial appendage, left ventricle

Question 5

On the lateral projection:
A. Border forming anterior adjacent to the sternum
B. Border forming in the high posterior subcarinal region
C. Border forming inferiorly and posteriorly

Answer 5

A. Right ventricle
B. Left atrium
C. Left ventricle

Question 6

2 portions of the right atrium

Answer 6

1. smooth POSTERIOR wall (from sinus venosus)

2. Trabeculated ANTERIOR wall (from embryonic right atrium)

Question 7

A muscular ridge that runs from the mouth of the SVC and fades inferiorly to the mouth of the IVC

-divides the 2 portions of the right atrium

Answer 7

Crista terminalis

Question 8

Divides the medial or posterior wall of the right atrium

Answer 8

Interatrial septum

*contains the FOSSA OVALIS(smooth central dimpled area)

Question 9

2 portions of the right ventricle

Answer 9

1. Inflow or sinus portion

2. Outflow tract or pulmonary conus

Question 10

Divides the 2 portions of the right ventricle

Answer 10

Crista supraventricularis

*a muscular ridge with a septal band called MODERATOR BAND

Question 11

The smooth cephalic portion of the right ventricle that leads to the pulmonary trunk

Answer 11

Infundibulum (conus arteriosus)

Question 12

Right pulmonary artery exits the right hilum as the ____ and ____

Answer 12

Truncus anterior, interlobar arteries

Question 13

Left mainstem bronchus lies BELOW the pulmonary artery

Answer 13

HYPARTERIAL

Question 14

Right bronchus lie next to the right pulmonary artery

Answer 14

EPARTERIAL

Question 15

Remnant of the ductus arteriosus, which closes functionally in the first 24 hours and closes anatomically by 10 days

-arises from the superior proximal left PA and crosses thru the aorticopulmonary window to the floor of the aorta

Answer 15

Ligamentum arteriosum

Question 16

Highest and most posterior cardiac chamber

Answer 16

Left atrium

Question 17

Strong fibrous chords that extend from the mitral leaflets to the papillary muscles of the left ventricle

Answer 17

Chordae tendinae

Question 18

Reservoirs created by the closure of the aortic valve and from which the right and left coronary arteries arise

Answer 18

Sinuses of valsalva

Question 19

The aorta gives off the _____

Answer 19

Right innominate artery, left common carotid artery, left subclavian artery

Question 20

• specialized neuromuscular tissue
• approx.5 to 20 mm
• located on the anterior endocardial surface of the right atrium just above the SVC and right atrial appendage junction, near the crista terminalis

Answer 20

Sinoatrial node

Question 21

2x5mm region of neuromuscular tissue at the endocardial surface, along the right side of the interstitial septum, just inferior to the ostium of the coronary sinus

Answer 21

Atrioventicular node

Question 22

20mm long tract which extends down the right side of the membranous interventricular septum

Answer 22

Bundle of HIS

Question 23

…first to activate (conduction system)

Answer 23

Anterior or septal right ventricle

Question 24

…last to activate (conduction system)

Answer 24

Posterior or basal left ventricle