PRACTICE QUIZ - THORAX
Select the ONE BEST answer
to complete the statement or answer the question. Fill in the blank on
the computer answer sheet that corresponds to the letter of your choice.
Only one answer is acceptible.
1. _____ Which of
the following statements on the intercostal neurovascular bundle in the
right 5th intercostal space is CORRECT?
A. The two anterior intercostal
arteries that supply the space are branches of the musculophrenic artery.
B. The space is supplied
by two posterior intercostal arteries, which are branches of the aorta.
C. The venous drainage of
the space is anteriorly to the internal thoracic veins and posteriorly
to the hemiazygous vein.
D. The intercostal nerve,
which innervates the intercostal muscles in the space, is a posterior ramus
(or primary division) of a thoracic spinal nerve.
E. At a level just anterior
to the angle of the ribs, the neurovascular bundle is located between
the innermost and internal intercostal muscles.
2. _____ Which of
the following rib costal cartilages does NOT articulate with the body of
the sternum?
A. Rib 2
B. Rib 3
C. Rib 5
D. Rib 7
E. Rib 8
3. _____ Which of
the following statements about the intercostal muscles is CORRECT?
A. The internal (posterior)
intercostal membrane is located external (posterior) to the subcostalis
muscle in left 2nd intercostal space near the vertebral column.
B. Muscle fibers of the external
intercostal muscle are found from the area of the rib tubercle to the
lateral border of the body of the sternum in the 6th intercostal
space.
C. The transversus thoracis
muscle has fibers that course obliquely from the sternum and cross 1-2
intercostal spaces before attaching to a rib.
D. The muscle fibers of the
internal intercostal muscle in the anterior aspect of the thoracic wall
course inferiorly and medially, which is just the oppposite
of the external intercostal muscles at this location.
E. In the 3rd intercostal
space, the internal thoracic artery is located between the external (anterior)
intercostal membrane and the transversus thoracis muscle.
4. _____ Which statement
concerning the pleura is CORRECT?
A. The mediastinal pleura
receives sensory fibers from intercostal nerves.
B. The visceral pleura is
innervated by intercostal nerves and is very sensitive to pain.
C. At the midaxillary line,
the parietal pleura is located at the level of the 8th rib.
D. Posteriorly, the parietal
pleura extends from the level of the spine of vertebra C7 to vertebra T12.
E. The parietal pleura extends
superiorly 1 " below the middle third of the clavicle.
5. _____ Which statement
concerning bronchopulmonary segments is CORRECT?
A. Each segment is supplied
by a lobar bronchus.
B. There are 10 segments
in the superior lobe and 10 segments in the inferior lobe of the left lung.
C. It is pyramidal in shape
with the apex directed toward the lateral surface of the lung.
D. It is supplied by a branch
of the pulmonary artery, which carries oxygenated blood to the lung.
E. Each segment is walled
off by connective tissue septa and can be surgically removed without
causing an internal pneumothorax since each segment is supplied
by a single tertiary bronchus.
6. _____ Which of
the following statements about the development of the lung is TRUE?
A. The linings of the bronchi
are derived from the ectoderm of the foregut.
B. The C-shaped rings of
cartilage in the trachea form from the splanchnic mesoderm surroundimg
the laryngotracheal tube.
C. The tracheoesophageal
groove occurs in the dorsal part of the foregut.
D. A tracheoesophageal fistula
is due to the failure of development of the tracheoesophageal groove
in the floor of the foregut.
E. The definitive lungs are
covered by visceral pleura since the lung buds push against the coelomic
lining of the coelomic space in the paraxial mesoderm.
7. _____The aortic
valve
A.is composed of a right,
left, and posterior cusps.
B. is located in the right
2nd intercostal space about a finger`s breadth lateral to
the sternum.
C.is located in the left
2nd intercostal space about a finger`s breadth lateral
to the sternum.
D. is located superior to
the infundibulum (conus arteriosus).
E. Both A and B
8. _____ The coronary
sinus
A. receives blood from all
of the cardiac veins.
B. drains into the right
atrium.
C. is located in the posterior
interventricular sulcus.
D.is a continuation of the
great cardiac vein.
E. Both B and D
9. _____ The fibrous
pericardium
A. extends superiorly to
the level of the 3rd costal cartilage.
B. is lined internally by
visceral pericardium.
C. is derived from the pleuroperitoneal
membrane.
D. is attached inferiorly
to the central tendon of the diaphragm.
E. is very elastic
10. _____ Which of
the following does NOT contribute to the diaphragm?
A. septum transversum
B. mesentery of the foregut
C. pleuroperitoneal membrane
D. pleuropericardial membrane
E. body wall
II. Multiple Completion.
Under the initial statement of each question are four statements that complete
or pertain to it. Read ALL statements carefully, and
then choose the appropriate answer.
Choose:
A=1,2, and 3;
B=1 and 3;
C=2 and 4;
D= 4 only;
E= all.
11. _____ The crista
terminalis of the right atrium
1. contains the atrio-ventricular
node superiorly.
2. is a vertical ridge which
separates the embryonic right atrium from the left
horn of the sinus venosus.
3. extends superiorly into
the right auricle.
4. separates the anterior
part of the atrium, which contains the musculi pectinati,
from the smooth walled posterior part.
12. _____ The membranous
part of the interventricular septum
1. contains trabeculae carnae.
2. is formed by the fusion
of the ridges of the truncus arteriosus with the endocardial
cushions.
3. is located inferior to
the posterior and left cusps of the aortic valve.
4. is the common site of ventricular
septal defects. |
