BONES OF THE CHEST

BONES

BONES IN THE CHEST: THORACIC CAGE

Humans have 25 bones in the chest that together protects several vital organs and provide shape and structure to the upper body. These bones collectively form the thorax, one of the most critical structures in the human body.

Also known as the breastbone, the sternum is a flat bone located in the middle of the chest. Its primary function is protecting the heart. The sternum is the attachment point for the costal cartilage, which connects it directly to the first seven pairs of ribs.

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STERNUM

The 12 pairs of ribs (24 in total) curve around the chest cavity to form the rib cage that protects the lungs, heart, and liver. There are seven pairs of true ribs, three pairs of false ribs and two pairs of floating ribs.

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​RIBS

Each rib consists of a head, neck, and tubercle.​

structure OF A RIB

Multiple Choice

Which section of the vertebral column is shown?

• lumbar

• cervical

• sacral

• thoracic

Multiple Choice

The star indicates the ...

• vertebral foramen

• vertebral disc

• intervertebral disc

• intervertebral foramen

Multiple Choice

The flat bone located in the middle of the chest is called...

• xiphoid

• sternum

• manubrium

• body

Multiple Choice

Bones of the thoracic cage that are not attached to the sternum; 5 lower ribs 

• small ribs

• true ribs

• floating ribs

• false ribs

Multiple Choice

Which set of ribs are highlighted in the picture?

• true

• floating

• false

• short

Multiple Choice

True ribs are pairs

• 1-7

• 8-12

• 1-4

• 11-12

Multiple Choice

Which ones are the ribs that attach directly to the sternum?

• true ribs

• floating ribs

• false ribs

Multiple Choice

Bones of the thoracic cavity that are not attached directly to the sternum

• fake ribs

• true ribs

• floating ribs

• false ribs

Multiple Choice

Which section of the rib cage is highlighted?

• true ribs

• false ribs

• floating ribs

Multiple Choice

Which section of the spine is highlighted?

• thoracic

• lumbar

• cervical

• sacral

Multiple Choice

Which vertebral region is highlighted in the picture?

• cervical

• thoracic

• lumbar

• sacrum

Multiple Choice

Which bone is highlighted in the picture?

• thoracic vertebrae

• lumbar vertebrae

• sacrum

• coccyx

Multiple Choice

How many cervical vertebrae do you have?

• 2

• 7

• 5

• 12

Multiple Choice

How many lumbar vertebrae do you have?

• 2

• 7

• 5

• 12

Multiple Choice

Which bone is highlighted in the picture?

• lumbar

• coccyx

• sacrum

• sternum

Multiple Choice

The C1 vertebra that articulates with the head is called ...

• axis

• atlas

• cervical

Multiple Choice

The second vertebra that allows the skull to rotate left and right is the ...

• atlas

• axis

• coccyx

• cervical