DSA 2: Ribs

Question 1

What does the head of the rib articulate with?

Answer 1

The inferior costal facet of the vertebra above and the superior costal facet of its own vertebra

(Only ribs 2-9)

Question 2

What does the tubercle of the rib articulate with?

Answer 2

The transverse process of the corresponding vertebra

(Only ribs 1-10)

Question 3

Which ribs only articulate with their own vertebra and not the one above?

Answer 3

Ribs 1, 10, 11, 12

Question 4

Which ribs do not have tubercles and cannot articulate with transverse processes of the corresponding vertebrae?

Answer 4

Ribs 11, 12

Question 5

Which ribs are atypical?

Answer 5

Ribs 1, 2, (maybe 10), 11, and 12

Question 6

Which ribs are typical?

Answer 6

Ribs 3-9

Question 7

Which ribs are true ribs?

Answer 7

Ribs 1-7

Question 8

Which ribs are false ribs?

Answer 8

Ribs 8-12

Question 9

What are the floating ribs?

Answer 9

Ribs 11-12

Question 10

What muscles insert onto the first rib and are responsible for elevating it?

Answer 10

Anterior Scalene

Middle Scalene

Question 11

What muscle inserts onto the second rib and elevates it?

Answer 11

Posterior scalene

Question 12

What is the origin and insertion of the Pectoralis Minor M.?

Answer 12

Anterior/superior surface of ribs 3-5 to the coracoid process of the scapula

Question 13

What is the action of the pectoralis minor m.?

Answer 13

Stabilizes the scapula, drawing it inferiorly and anteriorly

Question 14

What is the origin and insertion of the serratus anterior M.?

Answer 14

Anterior surface of the medial border of scapula to the superior lateral surface of ribs 2-8

Question 15

What is the action of the serratus anterior m.?

Answer 15

Protracts the scapula

Question 16

What is the origin and insertion of the Latissimus dorsi m.?

Answer 16

Spinous processes of T7-S3 and lower 4 ribs to the intertubercular/bicipital groove of the humerus

Question 17

What is the origin and insertion of the Quadratus lumborum?

Answer 17

Iliac crest and iliolumbar ligament to the inferior aspect of rib 12, TPs of L1-4

Question 18

What is the action of the Quadratus Lumborum M.?

Answer 18

Fixes the 12th rib in inhalation

Extends and laterally flexes the vertebral column

Question 19

What is the origin and insertion of the external intercostal ms.?

Answer 19

Spine to costal cartilage

Question 20

What is the origin and insertion of the Internal intercostal ms.?

Answer 20

Rib angle to the sternum

Question 21

What is the origin and insertion of the innermost intercostal ms.?

Answer 21

Rib angle to costal cartilage

Question 22

What is the origin and insertion of the thoracic diaphragm?

Answer 22

Xiphoid process, lower 6 ribs, L1-3 to the Central tendon of the diaphragm

Question 23

Where are the intercostal vessels found and how are they oriented?

Answer 23

Located between internal and innermost intercostal ms. in VAN orientation (sup to inf)

Question 24

Which ribs have bucket handle motion?

Answer 24

Ribs 1-2, 8-10

Question 25

Which ribs have pump handle motion?

Answer 25

Ribs 3-7

Question 26

What motion is performed by Ribs 11-12 during respiration?

Answer 26

Caliper Inhalation - down and posterior Exhalation - up and anterior

Question 27

What are the 5 motions of the ribs?

Answer 27

Bucket Handle Pump Handle Caliper Torsional Non-physiologic

Question 28

What occurs during torsional movement of the ribs?

Answer 28

Respiration is restricted on the side the vertebra is rotated towards because ribs have been flattened

Question 29

What causes non-physiologic motion of the ribs?

Answer 29

Trauma/repetitive microtrauma Rib becomes subluxed anterior/posterior or laterally compressed

Question 30

Typical causes of rib dysfunction (There's a lot)

Answer 30

Thoracic scoliosis/kyphosis Rib cage asymmetry (pectus excavatum/carinatum) Osteoporosis/osteoarthritis Increased chest wall diameter associated with illness such as COPD Abnormal tension in cervical, rotator cuff, or shoulder girdle musculature Lifestyle (slumping and depression)