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Chapter 1: Anatomy of the Cardiovascular and Pulmonary Systems L
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MULTIPLE CHOICE L
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1. Which of the following chest wall structures is located level with the second costal cartilage
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anteriorly and thoracic vertebra T4 and T5 posteriorly?
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A. Sternal angle L
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B. Jugular notch L
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C. Xiphoid process L
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D. Third costal cartilage L
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ANS: A F T L F T L
The sternal angle of the “angle of Louis” is level with the second costal cartilage anteriorly and
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thoracic vertebrae T4 and T5 posteriorly.
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PTS: 1
2. Pectus excuvatum is BEST described as: L
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A. Deformity of the sternum caused by trauma L
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B. Caved-in appearance of the chest L
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C. Diminished rib angle anteriorly FT L L
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D. Conical shape of the thoracic cage L
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ANS: B F T L F T L
Pectus excuvatum is a common congenital deformity of the anterior wall of the chest, in which
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several ribs and the sternum grow abnormally; it produces a caved-in or sunken appearance
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of the chest.
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PTS: 1
3. The true ribs are BEST defined by which of the following statements?
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A. Vertebrochondral ribs L
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B. Vertebrosternal ribs L
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C. Ribs 11 and 12 L
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D. Ribs 8, 9, and 10 FT L FT L FT L FT L
ANS: B F T L F T L
The first seven ribs attach via their costal cartilages to the sternum and are called the true ribs
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(also known as the vertebrosternal ribs).
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PTS: 1
Copyright ©2011, 2001, 1994 by Saunders, an imprint of Elsevier L
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4. Which of the following interventions is MOST appropriate for a patient with lower rib fractures?
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A. Short, shallow breaths L
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B. Pursed lip breathing L
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C. Deep breaths with splinting FT L L
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D. Breathing with arms raised L
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ANS: C F T L F T L
It is important for all therapists to recommend breathing (deep breathing), splinting (i.e., pillow),
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and coughing strategies for patients with rib fractures.
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PTS: 1
5. Which of the following positions facilitates greater excursion of both hemidiaphragms at rest?
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A. Supine position L
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B. Sidelying position L
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C. Standing position L
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D. Sitting position L
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ANS: A F T L F T L
In the supine position, without the effects of gravity, the level of the diaphragm in the thoracic
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cavity rises. This allows for a relatively greater excursion.
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6. Which of the following muscles help to achieve the active process of inspiration at rest?
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A. Sternocleidomastoid
B. Diaphragm
C. Abdominal muscles FT L
D. Trapezius
ANS: B F T L F T L
The diaphragm and internal intercostals (intercartilaginous portion) are the essential muscles to
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achieve the active process of inspiration at rest. Abdominal muscles assist with expiration. The
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sternocleidomastoid and trapezius are accessory muscles and assist with a more forceful
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inspiration.
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7. Which of the following accessory muscles of ventilation function to elevate and fix the first and
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second ribs?
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A. Sternocleidomastoid muscle L
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B. Serratus anterior L
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C. Latissimus dorsi FT L
D. Scalene muscle L
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The scalene muscles lie deep to the sternocleidomastoid, but may be palpated in the posterior
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triangle of the neck. These muscles function as a unit to elevate and fix the first and second ribs.
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The sternocleidomastoid muscle elevates the sternum.
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PTS: 1
8. When the arms and shoulders are fixed, by leaning on the elbows or grasping onto a table, this
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muscle can use its insertion as its origin and facilitate an increase in the A-P diameter of the
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thorax.
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A. Upper trapezius FTL
B. Pectoralis major L
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C. Sternocleidomastoid
D. Serratus anterior L
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ANS: B F T L F T L
When the insertion and origin of the pectoralis muscle are reversed by leaning on a table to
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fix the arms, the muscle will pull on the anterior chest wall, lifting the ribs and sternum to
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increase the A-P diameter of the thoracic cage.
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9. The serous fluid within the pleural space serves to provide which of the following functions?
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A. Create a constant negative pressure L
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B. Assist with venous return of blood to the heart FT L FT L FT L FT L FT L FT L FT L FT L
C. Reduce friction between the lungs and thoracic wall L
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D. Serve to allow separation of the pleural layers FT L L
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ANS: C F T L F T L
The serous fluid within the pleural space serves to hold the pleural layers together during
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ventilation and reduce friction between the lungs and the thoracic wall. The space creates the
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negative pressure to maintain lung inflation, not the fluid itself.
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10. Irritation of the phrenic supplied pleura results in which of the following pain referral patterns?
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A. Thoracic wall FT L
B. Abdominal wall L
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C. Mediasternal region L
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D. Lower neck and shoulder L
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ANS: D F T L F T L
Irritation of the phrenic supplied pleura can result in referred pain in the lower neck and
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shoulder, whereas, irritation of the intercostally innervated pleura may result in referral of pain to
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the thoracic or abdominal wall.
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11. An abnormal pleural friction rub on auscultation BEST indicates which of the following?
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A. Infection with a resultant inflammatory response within the pleura L
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