Chapter 6-Thorax

Question 1

1) The trachea bifurcates at approximately the level of:
a) C7, T1.
b) T4-T5.
c) T6-T7.
d) T8-T9.

Answer 1

b) T4-T5.

Question 2

2) The large indentation on the medial surface of the left lung is termed the _____ notch.
a) Costophrenic
b) Cardiophrenic
c) Cardiac
d) Hilar

Answer 2

c) Cardiac

Question 3

3) The functional unit of the respiratory system is the:
a) Alveoli
b) tertiary bronchi
c) diaphragm
d) visceral pleura

Answer 3

a) Alveoli

Question 4

4) Where is the thymus gland located?
a) Posterior to the xiphoid process
b) Anterior to the sternal angle
c) Posterior to the manubrium
d) Anterior to the hilum

Answer 4

c) Posterior to the manubrium

Question 5

5) Which heart valve is located between the left atrium and the left ventricle?
a) Tricuspid
b) Bicuspid/Mitral
c) Aortic semilunar
d) Pulmonary semilunar

Answer 5

b) Bicuspid/Mitral

Question 6

6) Which coronary artery is known as the “widowmaker”?
a) Right coronary artery
b) Left anterior descending artery
c) Right subclavian artery
d) Left circumflex artery

Answer 6

b) Left anterior descending artery

Question 7

7) Which tissue layer of the breast contains the excretory ducts?
a) Subcutaneous
b) Mammary
c) Retromammary
d) Deep muscle

Answer 7

b) Mammary

Question 8

8) Which ribs are considered the floating ribs?
a) First seven pairs of ribs
b) Lower five pairs of ribs
c) Rib pairs 11 and 12

Answer 8

c) Rib pairs 11 and 12

Question 9

9) Where is the lingula located within the lungs?
a) Inferoposterior surface of the left lung
b) Inferoanterior surface of the right lung
c) Inferoposterior surface of the right lung
d) Inferoanterior surface of the left lung

Answer 9

d) Inferoanterior surface of the left lung

Question 10

10) What structure forms the right border of the heart?
a) Right ventricle
b) Right atrium
c) Pulmonary trunk
d) Left atrium

Answer 10

b) Right atrium

Question 11

11) What is the basic unit of pulmonary structure called?
a) Secondary pulmonary lobule
b) Interstitial tissue
c) Segmental bronchi
d) Acini

Answer 11

a) Secondary pulmonary lobule

Question 12

12) Where is the foramen ovale located?
a) Between the right atrium and right ventricle
b) Between the left atrium and left ventricle
c) Within the interventricular septum
d) Within the interatrial septum

Answer 12

d) Within the interatrial septum

Question 13

13) The sinoatrial (SA) node is located in the:
a) interatrial septum near the coronary sinus
b) interventricular septum near the coronary sinus
c) superior aspect of the right atrium
d) superior aspect of the left atrium

Answer 13

c) superior aspect of the right atrium

Question 14

14) Which vessel is typically the most superior of the pulmonary vessels?
a) Right pulmonary artery
b) Right pulmonary vein
c) Left pulmonary artery
d) Left pulmonary vein

Answer 14

c) Left pulmonary artery

Question 15

15) Which vessel is the most posterior vessel arising from the arch of the aorta?
a) Brachiocephalic trunk
b) Right common carotid artery
c) Right subclavian artery
d) Left subclavian artery

Answer 15

d) Left subclavian artery