ribs

Question 1

what rib lines up w inferior angle

Answer 1

rib 7

Question 2

what are the true ribs

Answer 2

1-7 connect directly to sternum

Question 3

what are the false ribs

Answer 3

8-10 dont connect directly to sternum they share costal cartilage

Question 4

floating ribs

Answer 4

11-12 - not connected

Question 5

atypical ribs

Answer 5

1,2,10-12

Question 6

typical ribs

Answer 6

3-9

Question 7

why is rib 1 different

Answer 7

shorter, wider, sharply curved

one articular facet on head (T1)

scalene tubercle for attachment of anterior scalene muscle

grooves for subclavian

attachment for mid scalene

Question 8

how many facets do ribs 10-12 have

Answer 8

one articular facet

Question 9

what is costal cartilage made of

Answer 9

made of cartilage cells in a glycoprotein matrix strengthened by collagen

Question 10

what are the intercostals

Answer 10

external
internal
innermost

aid in posture and respiration

Question 11

what is the origin/insertion of the external intercostal

Answer 11

lower border of ribs
upper borders of ribs below

Question 12

origin / insertion of internal intercostals

Answer 12

inner surfaces of ribs and costal cartilage

upper border of adjacent ribs below

Question 13

what are the 3 openings of the diaphragm

Answer 13

inferior vena cava (T8)

esophagus (T10)

abdominal aorta (T12)

Question 14

O’s and I’s levator costarum

Answer 14

TP’s C7-T11
ribs 1-12

Question 15

what is the rib cage composed of

Answer 15

sternum (manubrium, body, xiphoid process)

ribs

joints (costovertebral, costotransverse)

Question 16

another name for true ribs

Answer 16

vertebrosternal

Question 17

another name for false ribs

Answer 17

vertebrochondral

Question 18

another name for floating ribs

Answer 18

vertebral

Question 19

rib 11,12

Answer 19

no neck
only 1 facet

Question 20

where is the infrasternal angle

Answer 20

xiphoid process

Question 21

what are the 4 rib joints

Answer 21

costovertebral
costotransverse
sternocostal
costochondral

Question 22

sternocostal joint rib 1 type

Answer 22

CARTILAGINOUS
synchondrosis
synarthrosis

Question 23

articular surfaces of sternocostal joint

Answer 23

costal notch manubrium
anterior end of 1st rIb cartilage

Question 24

articulating surfaces of costovertebral joint

Answer 24

facet on vertebral body
rib head facet

Question 25

articulating surfaces of costotransverse joint

Answer 25

TP’s costal facet
articular facet on tubercle of rib

Question 26

articulating surfaces of sternocostal joint (1st rib)

Answer 26

costal notch manubrium
anterior end 1st rib cartilage

Question 27

articulating surfaces of sternocostal joint

Answer 27

costal facet sternum
anterior end of 2-7 rib cartilages

Question 28

O’s and I’s of subclavius

Answer 28

1st rib
middle 1/3 clavicle

Question 29

articulating surfaces of costochondral joint

Answer 29

lateral edge of costal cartilage and medial end of rib

Question 30

external intercostals

Answer 30

lower border of ribs
upper border of ribs below

elevates on inspiration
supports intercostal spaces in inspir/expiration

intercostal nerves

Question 31

what direction do the external intercostals travel

Answer 31

INFERIOR AND MEDIALLY

Question 32

what direction do the intercostal and innermost fibers run

Answer 32

inferiorly and LATERALLY

Question 33

o/i innermost intercostals

Answer 33

lower border of ribs
upper border of rib below origin

elevate ribs

Question 34

which intercostals elevate ribs and which other muscle

Answer 34

external, innermost

levator costarum

Question 35

during inspiration which muscles contract

Answer 35

diaphragm, external intercostals

Question 36

what causes air to rush into the lungs

Answer 36

diaphragm and external intercostals contract
this enlarges the thoracic cavity and elevates ribs

Question 37

what causes air to expire

Answer 37

diaphragm and external intercostals relax
causing elastic tissue in lungs to spring back