Appendicular skeleton

Definition

The appendicular skeleton includes the bones of the limbs and girdles that attach them to the axial skeleton. It is essential for movement and interaction with the environment.

5 Must Know Facts For Your Next Test

1. The appendicular skeleton consists of 126 bones.
2. It includes the pectoral girdle, pelvic girdle, and bones of the upper and lower limbs.
3. The pectoral girdle comprises the clavicles and scapulae, facilitating arm movement.
4. The pelvic girdle consists of the hip bones (ilium, ischium, and pubis) which support lower limb attachment.
5. Long bones like the femur and humerus are part of the appendicular skeleton and are crucial for mobility.

Review Questions

• What are the main components of the appendicular skeleton?
• How many bones make up the appendicular skeleton?
• What role does the pectoral girdle play in the body?

Related terms

Axial Skeleton: Includes bones of the skull, vertebral column, and rib cage; supports central axis of body

Pectoral Girdle: Consists of clavicles and scapulae; connects arms to torso

Pelvic Girdle: Made up of hip bones; supports attachment of lower limbs