Os sacrum und Os coccygis

This video tutorial provides an in-depth exploration of the sacrum and coccyx, focusing on their anatomical structures and functions. It covers the sacrum wings, foramina, lumbosacral joint, sacrum promontory, and crest, as well as the apex of the sacrum and coccyx. The tutorial also discusses the ligaments associated with these bones, highlighting their roles in supporting the spine and limiting mobility.

What is the primary function of the sacral vertebrae as they merge over time?

• To improve nerve conduction

• To enhance muscle attachment

• To provide structural support

• To increase flexibility

Which structure is supported by the sacrum wings?

• The spinal cord

• The iliac crest

• The femur

• The psoas major muscle

What is the role of the foramina in the sacrum?

• To enable nerve branches to exit the spinal canal

• To allow blood vessels to pass

• To provide muscle attachment points

• To connect the sacrum to the coccyx

What forms the articular surface with the fifth lumbar vertebra?

• The crista sacralis mediana

• The apex ossis sacri

• The base ossis sacri

• The sacral canal

What is the function of the superior articular process in the sacrum?

• To support the coccyx

• To form part of the lumbosacral joint

• To protect the spinal cord

• To connect with the iliac bones

How many rudimentary vertebrae typically make up the coccyx?

• 2-4

• 5-7

• 3-5

• 4-6

What is the primary role of the sacrospinous ligament?

• To connect the sacrum to the femur

• To stabilize the sacrum and coccyx

• To enhance the mobility of the spine

• To support the lumbar vertebrae