Question

1.

a.Which type of vertebral bone has two transverse foramen?

b.Name the vertebral space the spinal cord travels through.

c.Which part of the vertebrae do the ribs articulate with?

d. Which material connects 10 of the ribs to the sternum?

e. What is the difference between true, false, and floating ribs? Give their numbers

Answer 1

1

a)

• Cervical vertebra has two transverse foramen .
• Vertebral artery is passed through this foramen.
• There are seven cervical vertebra.
• This foramen is present at the anterior side of vertebra on transverse process

b)

• Vertebral foramen is the space through which the spinal cord travels through.
• It is also called spinal canal.
• Root of spinal nerve , spinal branch of segmental artery passes through the vertebral foramen along with spinal cord.

c)

• Head of the rib articulate with demifacet of vertebra and tubercle of the rib join with costal facet of vertebra.
• There are 12 pairs (24 ) ribs and 12 thoracic vertebra.

d)

• Ribs are connected to sternum by a hyaline cartilage and it is called costal cartilage .
• First 10 Ribs on either side join on the sternum by this cartilage .

e)

• True ribs : The ribs which is attached with sternum by costal cartilage( attched with sternum directly) . 1st - 7 th rib are true ribs .( 14 ribs )
• False ribs : The ribs which is joined  to the 7th rib costal cartilage . 8th , 9th 10 th ribs are false ribs.( 6 ribs )
• Floating ribs : Ribs which are not attached to sternum directly .11th and 12 ribs are floating rib.( 4 ribs)