Detailed Anatomy of the Rib Cage | Specific Articulations

The video tutorial explains the articulations of the 12 ribs with the vertebrae and sternum. It covers the differences between complete and demi facets, the posterior and anterior articulations, and the classification of ribs into true, false, and floating categories. The tutorial also discusses genetic variations in rib articulations and provides guidance on understanding rib numbering and articulation patterns.

What is the main difference between a costal facet and a demi-facet?

• A costal facet is shared between two vertebrae.

• A demi-facet is a complete articulation on one vertebra.

• A costal facet is a complete articulation on one vertebra.

• A demi-facet is found only on the sternum.

Which ribs typically articulate with complete costal facets?

• Ribs 3, 4, and 5

• Ribs 6, 7, and 8

• Ribs 2 through 9

• Ribs 1, 10, 11, and 12

How do ribs 2 through 9 typically articulate with the thoracic vertebrae?

• With complete costal facets

• With demi-facets

• Directly with the sternum

• With the xiphoid process

What is the term used for ribs 1 through 7 when they articulate directly with the sternum?

• Vertebrocostal

• Floating

• Vertebrosternal

• Vertebral

Which ribs are known as floating ribs?

• Ribs 11 and 12

• Ribs 8 and 9

• Ribs 5 and 6

• Ribs 1 and 2

How do ribs 8 through 10 articulate with the sternum?

• Directly with the sternum

• With the costal cartilage of rib 7

• With the xiphoid process

• With the clavicle

What is the scientific term for ribs that do not articulate anteriorly?

• Vertebral ribs

• True ribs

• Vertebrosternal ribs

• Vertebrocostal ribs

How many true ribs are there in the human body?

• 12 pairs

• 5 pairs

• 7 pairs

• 10 pairs

What distinguishes true ribs from false ribs?

• True ribs attach directly to the sternum.

• False ribs are longer than true ribs.

• False ribs attach directly to the sternum.

• True ribs do not attach to the sternum.

How many total ribs are there in the human body?

• 24

• 12

• 18

• 30