Lungs, Pleura, & Thoracic Wall: Ribs

Question 1

Atypical ribs include

Answer 1

1st, 2nd, 11 and 12 ribs

Question 2

1st rib: distinguishing characteristics

Answer 2

Scalene Tubercle and ridge, Subclavian vein, subclavian artery

single facet on head for articulation with TI vertebra + 2 transversely directed grooves

short, flattened, most sharply curved, and widest part is nearly horizontal

Question 3

2nd rib : distinguishing characteristics

Answer 3

Tuberosity for serratus anterior

2 facets on head for articulation with the bodies of the TI and T2 vertebrae

Question 4

10th-12th ribs: distinguishing characteristics

Answer 4

like 1st rib, only possess one facet on their heads for articulation with single vertebra

Question 5

11th-12th ribs: distinguishing characteristics

Answer 5

short, have no neck or tubercle

Question 6

Typical features of the vertebral end of a rib

Answer 6

1. head
2. neck
3. tubercle
4. angle

Question 7

Middle of rib =

Answer 7

the shaft

Question 8

Sternal end of the rib does what

Answer 8

articulates directly with sternum, costal cartilage, or sits in fascia

Question 9

The “true ribs”

Answer 9

1-7 vertebrocostal

Question 10

the “false ribs”

Answer 10

9-10 vertebrochondral

Question 11

ribs 11 & 12

Answer 11

“floating” ribs

Question 12

What makes 1-7 “true” ?

Answer 12

they articulate directly with sternum

Question 13

what makes 8-10 “false” ?

Answer 13

their cartilage connects to the cartilage of the ribs above them, so they dont articulate with sternum directly

Question 14

what makes 11-12 “floating?”

Answer 14

they do not have any anterior articulations

end in posterior abdominal musculature

Question 15

rib heads

Answer 15

typically have two facets

1. facet articulates with numerically corresponding vertebra
2. second facet articulates with vertebra superior to it

Question 16

rib tubercles articulate with _______ except for _______

Answer 16

the transverse costal facets on the numerically corresponding vertebra except for the inferior two or three ribs

Question 17

Head of the rib articulates

Answer 17

numerically corresponding rib and also the rib superior to it

Question 18

demi facts are located where?

Answer 18

bilaterally, anteriorly, inferiorly and superiorly on vertebrae

Question 19

Intercostal spaces

Answer 19

named for rib forming superior boarder

11 intercostal spaces, 11 intercostal nerves

Question 20

Intercostal nerves

Answer 20

11 intercostal nerves

Question 21

Intercostal arteries

Answer 21

two sets of intercostal blood vessels and nerves, indentified by the same number assigned to the space