Bony Thorax Worksheet

how many parts is the sternum divided into and what are they

3, manubrium, body, xyphoid process

what ribs are known as true ribs

1-7

what ribs are known as false ribs

8-12

what ribs are known as floating ribs

11 and 12

which bone classification is the sternum

flat bone

what is the approximate length of the sternum in the average adult

6 in

which part of the sternum supports the sternal ends of the clavicle

clavicular notches

what is the name of the notch found at the superior border of the sternum

jugular notch

where is the sternal angle

connects the manubrium to the body

what structures form the costovertebral joints

vertebrae and ribs

the xiphoid tip lies at which vertebral level?

T10

t/f: costochondral joints allow small amounts of movement

false

when performing the oblique projection of the SC joints, which joint is positioned closer to the IR and is the side demonstrated

affected side

what is the patient rotation for an oblique SC joint body rotation method

10-15 degrees

how is the patient’s head positioned for a PA projection unilateral SC joint

rotated towards affected side

where does the CR enter for a PA SC joint

perpendicular to midsagittal plane at level of T3

where does the CR enter for an oblique SC joint body rotation method

T2-T3 (3 inches distal to C7) and 1-2 inches towards joint of interest

if performing an oblique SC joint tube angulation, the tube is angled ____ degrees ____ midsagittal

15, towards

what is the recommended SID for a PA oblique sternum

30 inches

what is the patient rotation for a PA oblique sternum

15-20 degrees, RAO

what is the ideal respiration phase for a PA oblique sternum

shallow breathing

the CR enters on the ____ side for a PA oblique sternum

elevated

what is the recommended SID for a lateral sternum

72 in

where is the top of the IR placed for a lateral sternum

1 ½ in above jugular notch

what is the respiration phase for a lateral sternum

deep inspiration

where is the top of the IR placed for upper ribs

1 ½ in above shoulder

what is the respiration phase for upper ribs

full inspiration

if the patient is positioned PA which ribs are better demonstrated anterior or posterior

anterior ribs

how many ribs should be demonstrated on the upper ribs

1-10

where is the bottom of the IR placed for the lower ribs

top of iliac crest

what is the respiration phase for lower ribs

full expiration

how many ribs should be demonstrated on the lower ribs

8-12

what is the patient rotation for oblique ribs

45 degrees

what is the respiration phase for lower oblique ribs

full expiration

what anatomical structure is best demonstrated on oblique ribs

axillary ribs (side part/curved part)

which ribs are demonstrated on an AP oblique projection

side closest to IR

which ribs are demonstrated on a PA oblique projection

side farthest from IR

as the depth of the thorax for an oblique sternum increases the depth of the x-ray tube angulation ________

decreases

how many ribs are attach directly to the sternum

7

t/f: anterior end of the ribs are lower than the posterior (vertebral) end

true

what is pectus excavatum

Congenital deformity of the anterior thorax caved/ sucked in

transfer of a cancerous lesion from one area to another

metastasis

inflammation of bone due to a pyogenic infection

osteomyelitis

loss of bone density

osteoporosis

malignant tumor arising from cartilage cells

chondrosarcoma