Support and Motion

Which of the following cell types is responsible for breaking down bone matrix?

• chondroclast

• osteoclast

• chondroblast

• osteocyte

Which type of cells gives rise to osteoblasts?

• mesenchyme

• osteocytes

• chondrocytes

• fibrocytes

Which type of bone cells lie in lacunae

• mesenchyme

• osteoblasts

• osteocytes

• osteoclasts

Spongy bone tissue

• is very dense

• contains concentric lamellae

• contains trabeculae

• is the primary component of compact bone

A passageway connecting neighboring osteocytes in an osteon is a

• central canal

• lamella

• canaliculi

• lacuna

The covering of the outer surface of bone is the

• lamellae

• lacunae

• periosteum

• perichondrium

These are blood vessels that run horizontal carrying blood from the medullary cavity to the osteon or from central canal to central canal

• Haversian canal

• Volkmann's canal

• lamellar canal

• canaliculi

Which of the following is correctly matched?

• short bone - carpal bone

• long bone - vertebra

• irregular bone - femur

• flat bone - phalanges of the toes

• short bone - humerus

An X-ray determines that Peter fractured the shaft of the humerus. The break is in the _________________ of the bone.

• epiphysis

• diaphysis

• growth plate

• artcular surface

Some marrow of long bones is termed "yellow" marrow under normal conditions. The function of yellow marrow is to

• manufacture blood cells

• manufacture tissue cells for skin

• store adipose (fat) tissue

• store bone-forming cells

• make vitamin D