Exam #3 - Thoracic Spine + Ribs

Question 1

ribs + Thoracic vertebrae + sternum

Answer 1

Thorax

Question 2

Function of Thorax

• Provides a stable base for muscles to control the ____ region
• Provides protection for the ____ organs
• Provides a mechanical bellows for ____

Answer 2

• Provides a stable base for muscles to control the craniocervical region
• Provides protection for the intrathoracic organs
• Provides a mechanical bellows for breathing

Question 3

Midthoracic Vertebrae

Primary weight-bearing structure of each vertebrae + resistance against compression

Answer 3

Body

Question 4

Midthoracic Vertebrae

Bw vertebral bodies of C2 and below
Function: shock absorber and spacer throughout the vertebral column

Answer 4

Intervertebral disc

Question 5

Midthoracic Vertebrae

BW the superior & inferior surfces of intervertebral disc & adjacent vertebral bodies

Function: Primary bond bw vertebrae

Answer 5

Interbody Joint

Question 6

Midthoracic Vertebrae

Function: connects vertebral body to the posterior elements of a vertebrae

Answer 6

Pedicle

Question 7

Midthoracic Vertebrae

Connects base of spinous process to each transverse process

Function: Protects the posterior aspect of the spinal cord

Answer 7

Laminae

Question 8

Midthoracic Vertebrae

Central canal located posterior to vertebral body

Function: houses & protects spinal cord

Answer 8

Vertebral Canal

Question 9

Midthoracic Vertebrae

Lateral opening bw adjacent vertebrae

Function: passageway for spinal nerve roots exiting vertebral canal

Answer 9

Intervertebral canal

Question 10

Midthoracic Vertebrae

Horizontal projection of bone from junction of a lamina and pedicle

Function: Attachments for muscles & ligaments

Answer 10

Transverse Process

Question 11

Midthoracic Vertebrae

Lateral sides of thoracic vertebral bodies

Function: attachment sites for the heads of ribs (costocorporeal joints)

Answer 11

Costal facets (on body)

Question 12

Midthoracic Vertebrae

Located at the anterior tips of most thoracic transverse processes

Function: attachment sites for the articular tubercle of ribs (costotransverse joints)

Answer 12

Costal facets (on transverse process)

Question 13

Midthoracic Vertebrae

Dorsal midline projection of bone from the laminae

Function: midline attachments for muscles and ligaments

Answer 13

Spinous Process

Question 14

Midthoracic Vertebrae

Paired vertical processes arising from junction of a laminae and pedicle

Function: form apophyseal joints, there synovial joints guide the direction & magnitude of intervertebral movement

Answer 14

Superior & Inferior Articular Processes

Question 15

Which vertebrae is classified as a typical thoracic vertebrae

Answer 15

T2-9

Question 16

Which vertebrae is classified as a Atypical thoracic vertebrae

Answer 16

T1, T10-12

Question 17

Each typical thoracic vertebral body has 20 contact points ____ or ____

Answer 17

directly or indirectly

Question 18

Joints of thoracic wall that connect ribs sternal ends to their perspective costal cartilages

Answer 18

Costochondral Joints

Question 19

How many zygapophyseal joints are in thoracic spine

Answer 19

24 joint (12 per side)

Question 20

Apophyseal joint facets face in the ____ plane with a mild ____ slope

Answer 20

frontal plane with a mild forward slope

Question 21

Rib movement is limited by the adjacent ____ and ____ joints (link to sternum)

Answer 21

costocorporeal & costotransverse joints

Question 22

Connects head of ribs with a pair of costal demifacets & adjacent margin of an intervening intervertebral disc

Function: stabalized by radiate and capsular ligaments

Answer 22

Costocorporeal Joint

Question 23

Connects the articular tubercle of a rib with the costal facet on transverse process of a corresponding thoracic vertebrae

Function: stabalized by the costotransverse and the superior costotransverse ligaments

Answer 23

Costotransverse Joint