Thoracic Spine

Question 1

The thoracic region of the spine is the second most…

Answer 1

immobile

Question 2

Posterior Thoracic cage

Answer 2

12 thoracic vertebrae and their intervening discs

Question 3

Lateral Thoracic cage

Answer 3

the wall is formed from the pairs of ribs `and 3 layers of muscles that span the intercostal spaces

Question 4

Anterior thoracic cage

Answer 4

the sternum

Question 5

during contraction of the diaphragm the central portion is drawn..

Answer 5

inferiorly

Question 6

the thorax houses…

Answer 6

vital organs (heart, lungs, vessels)

Question 7

Conduit

Answer 7

structures that pass through the thorax to another body part (ex. trachea)

Question 8

demi facets

Answer 8

located on superior and inferior portion of the body

Question 9

articulating processes are in the ______ plane

Answer 9

frontal plane; for side bending

Question 10

the transverse processes of the thoracic vertebra articulate with _____ to from the _____

Answer 10

tubercle of rib; joint of the head of the rib

Question 11

T1

Answer 11

has full superior facet on the body for the head of the 1st rib

Question 12

T10

Answer 12

facet for rib located on the pedicle, not the body

Question 13

T11 & 12

Answer 13

have NO transverse facet for rib articulations 11 and 12; have full facets for ribs instead of demi facets

Question 14

false ribs

Answer 14

8-10

Question 15

floating ribs

Answer 15

11-12

Question 16

articular portion of neck of rib

Answer 16

bears a convex facet for articulation with the transverse process of the similarly numbered vertebrae (costotransverse joint)

Question 17

non-articular portion of the neck of rib

Answer 17

a small roughened area that serves as the attachment site for the lateral costotransverse ligament

Question 18

the body of the rib begins ____ after the _____

Answer 18

laterally; tubercle

Question 19

1st rib

Answer 19

most highly curved and broad; contains a single articulating facet on the head of rib

Question 20

10th rib

Answer 20

The head of the 10th rib only contains one articular facet for the articulation with the body of the 10th thoracic vertebra

Question 21

ribs 11 and 12

Answer 21

The heads of these ribs only contain one articular facet to articulate with their respective vertebra

Question 22

the sternum contains the ______

Answer 22

manubrium, body, xiphoid process

Question 23

intervertebral joints

Answer 23

synarthrosis, cartilaginous, symphysis

Question 24

costovertebral joints

Answer 24

joint of the head of the rib & the costrotransverse joint

Question 25

constrotransverse joint

Answer 25

Between the tubercle of the rib and the transverse process of the similarly numbered vertebrae

Question 26

rib 1 attached at the _____

Answer 26

manubrium

Question 27

ribs 1-10 join the sternum through ____

Answer 27

costal cartilage

Question 28

ribs 2-7 attach on the body of ____

Answer 28

the sternum

Question 29

ribs 8-10 join the costal cartilage of _____

Answer 29

the rib above

Question 30

ribs 11 and 12 do not attach to ____

Answer 30

the sternum

Question 31

1st chondrosternal joint

Answer 31

between the 1st rib costal cartilage and the manubrium is a synarthrodial joint

Question 32

2nd chondrosternal joint

Answer 32

The joint is divided into two compartments by an intrarticular ligament that attaches the 2nd costal cartilage to the manubristernal joint

Question 33

3rd through 7th chondrosternal joints

Answer 33

synovial, planar

Question 34

manubristernal joint

Answer 34

synarthrodial; little movement

Question 35

xiphosternal joint

Answer 35

symphisis (joint w. fibrocartilagionous disc)

Question 36

diaphragm

Answer 36

PA: sternal portion: posterior surface of xiphoid process; costal portion: inner surfaces of ribs 6-12; lumbar portion – anterior surface of 1-3 lumbar vertebrae DA: central tendon I: motor innervation Phrenic nerve C3-5; sensory innervation IC nerves T7-12 A: descends during inhalation, ascends during exhalation

Question 37

external intercostals

Answer 37

Attachments: • Extend from the inferior edge of the superior rib to the superior surface of the rib below I: Intercostals A: respiration; most active

Question 38

internal intercostals

Answer 38

Attachments: Pass b/t the most inferior lateral edge of costal grooves of ribs above, to superior surface of ribs below I: Intercostals A: Respiration; active in forced respiration

Question 39

innermost intercostals

Answer 39

Attachments: internal surfaces of adjacent rubs along the medial edge of the costal grooves I: Internal A: Respiration

Question 40

Limiting factors of flexion

Answer 40

PLL, Ligamentum Flavum, Supraspinous, Interspinous, Erector spinae

Question 41

Limiting factors of extension

Answer 41

ALL, spinous processes, facet joints

Question 42

Limiting factors of side bending

Answer 42

Intertransverse, Iliolumbar

Question 43

Bucket handle

Answer 43

increases the later diameter

Question 44

pump handle

Answer 44

increases the anteroposterior diameter of the thorax