LRA-213 Chapter 10 workbook

Question 1

list the three structures that make up the bony thorax

Answer 1

• sternum
• thoracic vertebrae
• 12 ribs

Question 2

what is the term for the long, middle aspect of the sternum?

Answer 2

body

Question 3

the most distal aspect of the sternum does not ossify until a person is approximately _____ years of age

Answer 3

40

Question 4

the total sternum length on an average adult is about ____ inches (____cm)

Answer 4

6;15

Question 5

the xiphoid process of the sternum is at the approximate level of the ______ vertebrae

Answer 5

T9-T10

Question 6

the sternal angle is at the level of ________

Answer 6

T4-T5

Question 7

what is another term for the sternal angle?

Answer 7

manubriosternal joint

Question 8

what is the name of the joint that connects the upper limb to the bony thorax (the only bony connection between the bony thorax and the upper limb)?

Answer 8

sternoclavicular joint

Question 9

what is the name of the section of cartilage connects the anterior end of the rib to the sternum?

Answer 9

costocartilage

Question 10

what distinguishes a true rib from a false rib?

Answer 10

direct articulation via costocartilage

Question 11

true or false: the eleventh and twelfth ribs are classified as false and floating ribs

Answer 11

true

Question 12

true or false: the anterior aspect of the ribs is called the vertebral end

Answer 12

false

Question 13

which aspect of the ribs articulates with the transverse process of the thoracic vertebrae?

Answer 13

tubercle

Question 14

list the three structures found within the costal groove of each rib?

Answer 14

• artery
• vein
• nerve

Question 15

which end of the rib is most superior - the posterior vertebral ends of the anterior sternal ends?

Answer 15

posterior/vertebral end

Question 16

approximately how much difference in heigh is there between these two ends of the ribs?

Answer 16

3-5 inches (7.5-12.5cm)

Question 17

which ribs articulate with the upper lateral aspect of the manubrium of the sternum?

Answer 17

1st anterior/sternal end

Question 18

the bony thorax is widest at the lateral margins of which ribs?

Answer 18

8 or 9

Question 19

how many posterior ribs are shown above the diaphragm?

Answer 19

10 ribs

Question 20

what type of joint is the first sternocostal?

Answer 20

immovable/synarthrodial

Question 21

what type of joint is the 1st-12th costovertebral joints?

Answer 21

movable/diarthrodial (plane or gliding)

Question 22

what type of joint is the 1st-10th costochondral unions (between costocartilage and ribs?

Answer 22

immovable/synarthrodial

Question 23

what type of joint is the 1st-10th costotransverse joints (between ribs and transverse process of T vertebrae)?

Answer 23

movable/diarthrodial (plane or gliding)

Question 24

what type of joint is the 2nd-7th sternocostal joints (between second and seventh ribs and sternum)

Answer 24

movable/diarthrodial (plane or gliding)

Question 25

what type of joint is the 6th-9th interchondral joints (between anterior 6th and 9th costal cartilage)?

Answer 25

movable/diarthrodial (plane or gliding)

Question 26

what type of joint is the 9th and 10th interchondral joints between the cartilage?

Answer 26

fibrous/syndesmosis

Question 27

the joints with diarthrodial movements are classified as-

Answer 27

synovial

Question 28

what is unique about the floating ribs (1-7)?

Answer 28

they connect directly to the sternum via their own costocartilage

Question 29

what is unique about the floating ribs (11-12)?

Answer 29

they do not connect to neither the sternum nor costocartilage