Bontrager ch. 10 Exam Questions And Answers
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3 structures that make up the bony thorax - Answer✔sternum, thoracic vertebra, and 12 pairs
of ribs
what is the term for the long, middle aspect of the sternum - Answer✔body
most distal aspect of the sternum does not ossify until a person is approximately ___ years of
age - Answer✔40
the total sternum length on an average adult is about - Answer✔7 inches ( 18 cm )
the xiphoid process of the sternum is at the approximate level of - Answer✔T9-T10
the sternal angle is at the level of - Answer✔T4-T5
what is another term for sternal angle - Answer✔manubriosternal joint
name of the joint that connects the upper limb to the bony thorax - Answer✔sternoclavicular
name of the section of cartilage that connects the anterior end of the rib to the sternum -
Answer✔costicartilage
what distinguishes a true ribs from a false ribs - Answer✔true ribs connect to the sternum by
their own costicartilage. false ribs are connected to the sternum via the costicartilage of the
seventh rib.
true/false: the eleventh and twelfth ribs are classified as false and floating ribs - Answer✔true
true/false: the anterior end of the ribs is called vertebral end - Answer✔false (called sternal
end)
which aspect of the ribs w/ the transverse process of the thoracic vertebrae - Answer✔tubercle
three structures found within the costal groove of each rib - Answer✔artery, vein , and nerve
1st sternocostal - Answer✔immovable-synarthrodial
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1st-12th costovertebral joints - Answer✔moveable-diathrodial (plane or gliding)
1st-10th costochondral unions (bewteen costicartilage and ribs) - Answer✔immovable-
synarthrodial
1st-10th costotransverse joints (bewteen ribs and transverse processes of T-vertebrae -
Answer✔moveable-diathrodial (plane or gliding)
2nd-7th sternocostal joints (bewteen 2nd and 7th ribs and sternum) - Answer✔moveable-
diathrodial (plane or gliding)
6th-9th interchondral joints (between anterior 6th-9th costal cartilage) - Answer✔moveable-
diathrodial (plane or gliding)
9th-10th interchondral joint between the cartilages - Answer✔fibrous-syndesmosis
true/false: it is virtually impossible to visualize the sternum with a direct PA or AP proj. -
Answer✔true
true/false: a large, "deep-chested" (hyperstenic) patient requires more obliquity for a frontal
view of the sternum as compared with "thin-chested" (asthenic) patient. - Answer✔false. less
obliquity
how much rotation should be used for the oblique position on the sternum for a large. "deep
chested" patient - Answer✔approximately 15 degree
oblique position of sternum, kV range for analog exposure - Answer✔65-70 kV ( higher 5-10 kV
higher typically for digital system )
oblique position of sternum, mA range for analog exposure - Answer✔low
oblique position of sternum, exposure range for analog exposure - Answer✔high (2-3 seconds)
with orthostatic breathing technique
what is the advantage of performing an orthostatic (breathing) technique for radiography of the
sternum - Answer✔it blurs lung markings and ribs, which improves the visibility of the sternum
what is the primary reason that a SID of less than 40 inches (102 cm) should not be used
sternum radiography - Answer✔increase in patient dose, especially skin dose
what other imaging option is avail. to study the sternum if routine RAO and lateral radiographs
do not provide sufficient information. - Answer✔CT or NUC MED
preferred positioning to demonstrate injury to ribs: general body position - Answer✔recumbent
preferred positioning to demonstrate injury to ribs: breathing instructions - Answer✔expiration
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