The Skeletal System

In most adult human beings there are __________ bones in the skeleton.

• 206

• over 300

• 186

• 142

Which of the following functions does the skeletal system perform?

• provide structural support for the body

• provide protection of vital organs

• provide for body movement

• act as a mineral reservoir in the body

• site of blood cell formation

Your skeleton is divided into two parts

• Appendicular and axial skeleton

• Appendicular and external skeleton

• Axial and radial skeleton

• Ventral and dorsal skeleton

The skull, mandible, ribs, sternum, sacrum, and the vertebral column make up the _________________.

• Axial skeleton

• Appendicular skeleton

• Radial skeleton

• Anterior skeleton

Bones of the arms, legs, and the pelvis comprise ________________.

• the appendicular skeleton

• the axial skeleton

• the anterior skeleton

• the posterior skeleton

Bone cells are constantly being replaced. Specialized cells remove old bone while others replace them with new bone cells.

• Osteoblasts form new bone cells

• Osteoclasts remove old bones cells

• Osteoclasts create new bone cells

• Osteoblasts break up and destroy old bone cells

Tags

NGSS.MS-LS1-2

The tough layer of connective tissue that covers the surface of bones

• Periosteum

• Anterium

• Haversium

• Calcium

The passageways for blood vessels within compact bone tissue

• Haversian canals

• Aversion canals

• Appendicular canals

• Anterior canals

The dense, hard portion of bone that gives bones their strength

• compact bone

• spongey bone

• meaty bone

• smooth bone

The inner layer of bone with the lattice structure

• spongey bone

• compact bone

• cartilage

• marrow