chapter 7 set 5

The two primary hormones that regulate blood calcium are

Calcitriol Parathyroid hormone

Osteoprogenitor cells are located in

Endosteum periosteum

Steps in endochondrial ossification

Hyaline cartilage model develops Periosteal bone collar forms Primary ossification center appears Secondary ossification center appear Epiphyseal plates become epiphyseal lines

Which characterize bone remodeling

It can be stimulated by stress on a bone It occurs at the periosteal and endosteal surfaces of a bone it helps maintain calcium and phosphate levels in body fluids

Which statements characterize woven bone

It is formed during intramembranous ossification It is not well organized It is replaced by lamellar bone

The region of a mature bone between the diaphysis and epiphysis is the

Metaphysis

Which statements characterize canaliculi

Nutrients pass through them They extend from lacunae to lacunae They contain osteocyte cytoplasmic extensions

A bones growth in diameter is called

Oppositional growth

When osteoblasts become entrapped in the matrix they produce, they become cells called

Osteocytes

Insufficient ossification is a condition known as

Osteopenia

The release of ____ hormone increases blood calcium levels

Parathyroid

A tough fibrous layer covering the outer surface of a long bone is called

Periosteum

A fracture which is a thin break caused by recent increased physical activity in which the bone experiences repetitive loads is called

Stress fracture

Decreased bone mass can cause a disease called

osteoporosis