respiratory anatomy: Thoracic cage and Intercostal spaces Flashcards
1
Q
- What does the thoracic cage consists of in terms of bones and cartilage
A
- 12 pairs of ribs with their cartilages
- Sternum
2
Q
In what orientation do the ribs join with the thoracic vertebrae
A
Ribs articulate (join) with the thoracic vertebrae posteriorly
3
Q
- Which ribs are “true ribs”
A
ribs 1 to 7
4
Q
- What does the term true rib mean
A
the costal cartilage of each rib articulates directly with the sternum
5
Q
- Which ribs are “false ribs”
A
Ribs 8-10
6
Q
- What does the term false rib mean
A
ribs that do not articulate directly with the sternum and instead their costal cartilage articulates with the costal cartilage of the rib above
7
Q
- Which ribs are “floating ribs”
A
ribs 11-12
8
Q
- What does the term floating rib mean
A
ribs that only articulate with vertebrae
9
Q
where is the jugular/sternal notch found
A
it is found at T2
10
Q
where is the sternal angle found
A
it is found at T4-T5
11
Q
where is the Xiphoid process found
A
it is found at T9-T10
12
Q
- Why does inspiration occur in terms of the thoracic cavity
A
occurs do to changes in the volume of the thoracic cavity, changing the pressure in the lungs
13
Q
- What is the primary muscle of respiration
A
Diaphragm
14
Q
- What separates the thoracic cavity from the abdominal cavity
A
Diaphragm
15
Q
- Which nerve innervates the diaphragm and which vertebras does this nerve come from
A
- Phrenic Nerve innervates the diaphragm
- comes from C3, C4 and C5
