Deck 30: Anatomic and Physiologic Relationships Within the Thoracic Cavity

Question 1

Select the structure that the medial wall of the right atrium contains.

A) Interventricular septum
B) Interatrial septum
C) Right upper pulmonary vein
D) Right lower pulmonary vein

Answer 1

B

Question 2

Which of the following has a slight bulge seen at the aortic valve cusps?

A) Coronary sinus
B) Crista supraventricularis
C) Sinus of Valsalva
D) Recess of the oblique sinus

Answer 2

C

Question 3

The pericardial sac protects the heart from:

A) friction.
B) diaphragmatic motion.
C) hernia invasion.
D) tumor.

Answer 3

A

Question 4

The wall of the aorta bulges slightly at each semilunar cusp to form which one of the following?

A) Coronary arteries
B) Sinus of Valsalva
C) Chordae tendinae
D) Arantius nodule

Question 5

Defects in the valves may cause turbulence or regurgitation on auscultation, which is called _____________.

A) stenosis
B) murmur
C) arrhythmia
D) insufficiency

Question 6

The right border of the heart is formed by the ______________.

A) right atrium
B) right ventricle
C) superior vena cava
D) pulmonary trunk

Question 7

The mitral valve separates which of the following sets of structures?

A) Right and left atria
B) Left atrium and left ventricle
C) Right atrium and right ventricle
D) Right and left ventricles

Question 8

The inferior vena cava is guarded by a fold of tissue called the _____ valve, whereas the coronary sinus is guarded by the _____ valve.

A) eustachian; coronary
B) thebesian; eustachian
C) eustachian; thebesian
D) eustachian; atrial

Question 9

The most posterior chamber to the left of the sternum is the ___________.

A) right atrium
B) left atrium
C) right ventricle
D) left ventricle

Question 10

The apex of the heart is formed by the _____________.

A) left atrium
B) right atrium
C) left ventricle
D) right ventricle

Question 11

The forceful contraction of the cardiac chambers is ___________, and the relaxed phase of the cycle is ___________.

A) diastole; systole
B) up slope; down slope
C) systole; dicrotic
D) systole; diastole

Question 12

The _____________ is the pleural reflection between the costal and diaphragmatic portions of the parietal pleura.

A) costal pleura
B) costophrenic sinus
C) mediastinal pleura
D) diaphragmatic pleura

Question 13

The tricuspid valve opens when the:

A) right ventricle pressure drops below the right atrial pressure.
B) papillary muscle contracts.
C) velocity of blood flow in the right ventricle exceeds the velocity of flow in the right atrium.
D) pulmonic valve opens.

Question 14

The base of the heart is formed by the ______________.

A) left atrium
B) right atrium
C) left ventricle
D) right ventricle

Question 15

Which valve prevents retrograde flow between the aorta and left ventricle?

A) Mitral
B) Tricuspid
C) Semilunar
D) Atrioventricular

Question 16

The outflow tract of the right ventricle is also called the _______________.

A) infundibulum
B) conus arteriosus
C) crista terminalis
D) right atrial appendage

Question 17

The roof of the right ventricle is occupied by the _______________, which lies between the tricuspid and pulmonary orifices.

A) coronary sinus orifice
B) right atrial appendage
C) fossa ovalis
D) crista supraventricularis

Question 18

Approximately how many beats per minute is the normal adult heart rate?

A) 50
B) 70
C) 90
D) 100

Question 19

Two pulmonary veins enter posteriorly in which one of the following?

A) Left atrium
B) Right atrium
C) Left ventricle
D) Right ventricle

Question 20

The superior vena cava (SVC) enters the right atrium __________.

A) posteriorly
B) anteriorly
C) medially
D) ventrally

Question 21

The greatest muscle mass in the heart is found in which one of the following structures?

A) Right atrium
B) Left ventricle
C) Right ventricle
D) Left atrium

Question 22

Which one of the following structures initiates the normal cardiac impulse?

A) Atrioventricular node
B) Bundle of His
C) Sinoatrial node
D) Purkinje fibers

Question 23

Most coronary venous drainage is into the ________________.

A) coronary veins
B) coronary sinus
C) thespian veins
D) atrial sinus

Question 24

Atrial contraction follows the _________ on an electrocardiogram (ECG).

A) T wave
B) P wave
C) QRS complex
D) S wave