Axial Versus Appendicular Skeleton Essentials

Dr. Alsup introduces the basics of the skeletal system, focusing on the axial and appendicular skeletons. The axial skeleton, with 80 bones, includes the skull, thoracic cage, and vertebral column, aligned along the body's longitudinal axis. The appendicular skeleton, with 126 bones, comprises the limbs and girdles, connecting to the axial skeleton. An interactive question about the ribs helps reinforce the classification of bones. The video concludes with an invitation for questions.

What is the primary focus of this video session?

• The nervous system

• The muscular system

• The basics of the axial and appendicular skeletons

• The details of each bone in the human body

How many bones are there in the axial skeleton?

• 80

• 100

• 126

• 206

Which imaginary line does the axial skeleton align with?

• Horizontal axis

• Longitudinal axis

• Transverse axis

• Diagonal axis

Which of the following is NOT part of the axial skeleton?

• Pelvic girdle

• Vertebral column

• Thoracic cage

• Skull

Approximately how many bones make up the appendicular skeleton?

• 80

• 126

• 206

• 100

Where are most of the bones in the appendicular skeleton located?

• In the skull

• In the thoracic cage

• In the hands and feet

• In the vertebral column

Which girdles are part of the appendicular skeleton?

• Pectoral and pelvic girdles

• Thoracic and cranial girdles

• Skull and thoracic girdles

• Vertebral and rib girdles

What is the main function of the pectoral and pelvic girdles?

• To form the vertebral column

• To connect appendicular bones to the axial skeleton

• To support the rib cage

• To protect the brain

Which part of the skeleton do the ribs belong to?

• Both axial and appendicular skeletons

• Axial skeleton

• Appendicular skeleton

• Neither axial nor appendicular skeletons

Why are ribs not considered part of the appendicular skeleton?

• They are part of the thoracic cage near the longitudinal axis

• They are part of the pelvic girdle

• They are located in the limbs

• They are part of the pectoral girdle