Ribs

Question 1

True Ribs

Answer 1

• Ribs 1-7
• Attach directly to the sternum

Question 2

Flase ribs

Answer 2

• Ribs 8-10
• Cartilages are joined to that of the rib immediately superior to them
• Indirect connections/attachment to the sternum

Question 3

Floating ribs

Answer 3

• Ribs 11 and 1
• Cartilages do not connect/attach to sternum
  End in the posterior abdominal musculature

Question 4

1. Typical Ribs (3-9)
2. Typical true (3-7)
3. Typical false (8-9)
   Example question: Which of the following is typical and true? Or atypical and true/false? Understand that true, false, floating ribs, is based upon the costal cartilage.
   It’s typical and atypical based upon the characteristics of the rib.

Answer 4

Head of typical rib:
- Wedge shaped head
- Two facets separated by the crest of the head
- One for articulation with the numerically corresponding vertebra at the level
- One for articulation with vertebra superior to it

Neck:
- Connects the head with the body at the level of the tubercle

Tubercle:
- Smooth, articular part for corresponding transverse process of the vertebra
- Rough, nonarticular part for attachment of the costotransverse ligament

Shaft
- Thin, flat, and curved
- Greatest curvature at the costal angle
- Costal groove- internal surface that protects the intercostal nerve and vessels