Sternocostal & Costochondral Joints | Rib-Sternum Articulations

The video tutorial explains how ribs articulate with the sternum, focusing on sternocostal and costochondral joints. It covers the anatomy of the sternum, including the manubrium and xiphoid process, and details the rib anatomy, highlighting the differences between synovial and primary cartilaginous joints. The tutorial also discusses floating ribs and rib anomalies, emphasizing the articulation of ribs with vertebrae and the role of Demi and complete facets.

What are the two major types of joints involved in rib articulation with the sternum?

• Pivot and saddle joints

• Ball-and-socket and hinge joints

• Sternocostal and costochondral joints

• Synovial and fibrous joints

Which part of the sternum is the most superior?

• Clavicle

• Xiphoid process

• Sternal body

• Manubrium

What type of joint is the connection of rib number one to the sternum?

• Primary cartilaginous joint

• Hinge joint

• Synovial joint

• Ball-and-socket joint

How do ribs 8-10 attach to the sternum?

• Directly via costal cartilage

• Indirectly via the costal cartilage of rib 7

• Directly to the xiphoid process

• They do not attach to the sternum

What is the classification of the costochondral joints of ribs 8-10?

• Synovial joints

• Fibrous joints

• Ball-and-socket joints

• Primary cartilaginous joints

What is unique about the articulation of floating ribs 11 and 12?

• They have a ball-and-socket joint with the sternum

• They articulate directly with the sternum

• They have no articulation with the vertebrae

• They do not articulate with the sternum

What feature is absent in ribs 11 and 12 that is present in other ribs?

• Necks and tubercles

• Costal cartilage

• Articulation with the sternum

• Vertebral attachment

How do ribs 11 and 12 differ in their articulation with vertebrae compared to other ribs?

• They articulate with the transverse processes

• They have demi-facets

• They have no articulation with vertebrae

• They have complete facets

Which ribs are considered floating ribs?

• Ribs 11 and 12

• Ribs 8 and 9

• Ribs 5 and 6

• Ribs 1 and 2

What is the primary function of the costal cartilage in ribs 11 and 12?

• To form a synovial joint

• To connect with the xiphoid process

• To provide protection to the anterior tip

• To attach to the sternum