Anatomy Of Bony Thorax, Sternum And SC Joints

Question 1

The bony thorax

Answer 1

• provides an expandable chamber for respiration
• protects the lungs, heart and great vessels
• consists of sternum, thoracic spine, and 12 ribs

Question 2

The sternum is a “flat bone” with what three divisions?

Answer 2

Manubrium, body, xiphoid

Question 3

The body of the sternum is made up of ____ segments which are completely fused by age 25

Answer 3

Four

Question 4

True/false: The xiphoid is not totally ossified until age 40

Answer 4

True

Question 5

True/ false: the sternum is a highly cancellous tissue covered by thin layer of compact bone (common site for a bone marrow biopsy)

Answer 5

True

Question 6

The first 7 pairs of ribs are called

Answer 6

True ribs

Question 7

Each _____ attaches directly to the sternum through its own costocartilage

Answer 7

True rib

Question 8

Ribs 8-12 are called

Answer 8

False ribs

Question 9

Ribs 8 thru 10 connect to the costocartilage of rib __

Answer 9

7

Question 10

Ribs 11 and 12 are ______ ribs because they have no anterior articulation

Answer 10

Floating

Question 11

The first rib is most ____ (horizontal/vertical)

Answer 11

Vertical

Question 12

Moving in an inferior direction, ribs 1 thru 7 (increase/decrease) in length

Answer 12

Increase

Question 13

Moving in an inferior direction ribs 7-12 get (longer/shorter)

Answer 13

Shorter

Question 14

The bony thorax is widest around ribs what

Answer 14

8-9

Question 15

True/false: ribs 8 thru 12 are too short to reach the anterior side of the body

Answer 15

True

Question 16

The head of a rib articulates with one or two ______ bodies (depending on the vertebral body facets)

Answer 16

Thoracic vertebral bodies

Question 17

The tubercle articulates with the ______ process of a thoracic vertebra, and is the site of a ligament attachment

Answer 17

Transverse process

Question 18

The shaft (body) angles ____ and ____ at the “angle of the rib”

Answer 18

Anteriorly, and inferiorly

Question 19

The vertebral end of each rib, sits more (anteriorly/superiorly) than the sternal end

Answer 19

Superiorly

Question 20

Why are rib injuries so painful?

Answer 20

Because each costal groove contains an artery, a vein and a nerve

Question 21

Costochondral junction

Answer 21

An immovable joint bound by the periosteum of the rib

Question 22

Sternoclavicular joints

Answer 22

Synovial joints with a gliding motion (like carpal bones)

Question 23

Sternocostal joint of rib one

Answer 23

Immovable joint

Question 24

Interchondral joints ribs 6 thru 9

Answer 24

Gliding synovial joints

Question 25

Costrotransverse joints and costovertebral joints

Answer 25

Gliding synovial joints

Question 26

True/ false: ribs 11 and 12 have no costotransverse joints

Answer 26

True

Question 27

Ribs furthest away from IR that you will see for a __ oblique (turn ribs away from IR to get spine out of the way)

Answer 27

PA

Question 28

LPO for an AP oblique rotate pt 45 degrees move ribs ____ to detector

Answer 28

Closer

Question 29

Upper ribs include ribs

Answer 29

1-10

Question 30

Lower ribs include ribs

Answer 30

8-12