18. A 6-year-old boy with tetralogy of Fallot shows pulmonary stenosis and right
ventricular hypertrophy in addition to other symptoms. Which of the following structures
is likely to be found in the hypertrophied heart chamber?
(A) Sinus venarum
Chapter 4 Review Test or Answers and Explanations
Directions: Each of the numbered items or incomplete statements in this section is
followed by answers or by completions of the statement. Select the one lettered
answer or completion that is best in each
Has preganglionic fibers running in cranial nerves (CNs) III, VII, and IX
that pass to cranial autonomic ganglia (i.e., the ciliary, submandibular,
pterygopalatine, and otic ganglia), where they synapse with postganglionic
Has preganglionic fibe
38. The attending faculty in the coronary intensive care unit (ICU) demonstrates to his
students a normal heart examination. The first heart sound is produced by nearsimultaneous closure of which of the following valves?
(A) Aortic and tricuspid
Are prominent ridges of atrial myocardium located in the
interior of both auricles and the right atrium.
Is a vertical muscular ridge running anteriorly along the right
atrial wall from the opening of the SVC to the opening of the
Coarctation of the aorta (Figure 4-16): occurs when the aorta is abnormally
constricted just inferior to the ductus arteriosus, in which case an adequate
collateral circulation develops before birth. It causes (1) a characteristic rib
1. Right coronary artery
Arises from the anterior (right) aortic sinus of the ascending aorta, runs
between the root of the pulmonary trunk and the right auricle, runs between
the right auricle and the pulmonary trunk, and then descends in the right
The truncal ridges and the bulbar ridges derived from neural crest
mesenchyme grow in a spiral fashion and fuse to form the AP septum.
The AP septum divides the truncus arteriosus into the aorta and pulmonary
2. Partition of the primitive atrium