Osteoblast

• Bone cell that builds new bone tissue

• Cell that breaks down bone tissue

• Cell that stores fat in bones

• Cell that produces red blood cells

Thoracic Vertebrae

• 10 lower back vertebrae; attach to pelvis

• 12 middle back vertebrae; attach to ribs

• 7 neck vertebrae; support the head

• 5 upper back vertebrae; connect to the skull

Spongy Bone

• Lightweight inner bone layer; filled with marrow spaces

• Dense outer bone layer; provides strength

• A type of cartilage found in joints

• Bone tissue that is primarily composed of fat

Diaphysis

• Shaft or central part of a long bone

• The end part of a long bone

• A type of bone marrow

• A joint between two bones

Long Bone

• Bone with a shaft (diaphysis) and two ends (epiphyses)

• Bone that is wider than it is long

• Bone that is primarily composed of spongy tissue

• Bone that forms the protective case around the brain

peri-

• Surrounding, around

• Inside, within

• Above, over

• Below, under

-physis

• Growth

• Decay

• Stagnation

• Reduction

clast-

• Breaking down

• Building up

• Holding together

• Separating apart

Lumbar Vertebrae

• 3 lower back vertebrae; support most body weight

• 5 lower back vertebrae; support most body weight

• 7 lower back vertebrae; support most body weight

• 5 upper back vertebrae; support most body weight

Canaliculi

• Tiny canals connecting bone cells for nutrient exchange

• Large vessels for blood circulation in bones

• Cells responsible for bone formation

• Spaces filled with bone marrow