Bones (Pulmonary System) Flashcards
1
Q
True Ribs.
A
- Pairs 1-7
- Articulate with vertebra and directly with sternum (via costal cartilage)
2
Q
False Ribs.
A
- Pairs 8-10
- Articulate with vertebra and indirectly with sternum (via costal cartilage of ribs 6 and 7)
3
Q
How many pairs of ribs are there?
A
12
4
Q
What are the (3) elements of the sternum?
A
- Manubrium
- Body
- Xiphoid process
5
Q
What bones articulate at the sternocostal joints?
A
Joints between ribs 1-7 (true ribs) & sternum
6
Q
What type of joint is it between the manubrium and 1st rib?
A
Fibrocartilaginous joint
7
Q
Which ribs are surrounded by thin capsules?
A
Ribs 2-7
8
Q
What are the interchondrial joints?
A
- Ribs 7-10 involved
- Synovial joints
- Occur between the costal cartilages of adjacent ribs
9
Q
Floating ribs.
A
- Pairs 11-12
- Articulate with vertebra, no attachment anteriorly to sternum
10
Q
Which ribs are typical?
A
2-9
11
Q
Which ribs are atypical?
A
1, 10, 11 + 12
12
Q
Why is the 10th rib atypical?
A
Head of rib has 1 facet for articulation with 1 vertebral body (T10)
13
Q
Why are the 11th & 12th ribs atypical?
A
- No anterior attachment to sternum
- Only articulate with 1 vertebral body (rib 11 = T11, rib 12 = T12)
- No tubercles
- Shorter than the other ribs
14
Q
What ribs are involved in interchondrial joints?
A
Ribs 7-10
15
Q
What is the purpose of interchondrial joints?
A
Provide anchorage to the sternum
