1Anatomy: Thorax -

Thoracic cage

Sternum RibsR1-R12Costal cartilage

2Anatomy: Thorax -

SternumManubrium sterni:

sternoclavicular joint Body Xiphisternum = xiphoid proc. Sternal angle

3Anatomy: Thorax -

Typical rib (R3-R10): head (1/2)

head has 2 facets (demifacets) for joints with adjacent vertebral bodies

4Anatomy: Thorax -

Typical rib (R3-R10): head (2/2) an intermediate crest for

attachment with intervertebral disc

5Anatomy: Thorax -

Typical rib (R3-R10) neck, tubercle (joint with

transverse proc.), angle, costal cartilage

6Anatomy: Thorax -

Typical rib (R3-R10): costal groove

costal groove

7Anatomy: Thorax -

Typical rib (R3-R10)

R3-7 joint to sternal body R8-10 attach to the costal

cartilage of the rib above ( costal arch)

body

8Anatomy: Thorax -

The first rib (R1) flattened, costal cartilage to sternal manubrium

9Anatomy: Thorax -

The first rib (R1): inferior surface

contact pleura - smooth

First rib

10Anatomy: Thorax -

The first rib (R1): superior surface groove for subclavian v. a. scalene tubercle: attachment of

scalene ant. muscle (scalene med.; subclavius)

11Anatomy: Thorax -

The second rib (R2) costal cartilage has 2

facets

2nd rib

12Anatomy: Thorax -

The 11th and 12th ribs (R11, R12): head single facet on head, no

joint between tubercle and transverse proc.

13Anatomy: Thorax -

The 11th and 12th

ribs (R11, R12)

end in small cap of cartilage: floating rib