Jones Derm Exam 3

Which of the following are functions of the skeletal system?

• Protection

• Movement

• Production of body heat

• acid base balance

• Blood cell production

What bones form sutures?

• Sutural bones

• Long bones

• Flat bones

What type of bones are used for movement?

• flat bones

• Long bones

• Sutural bones

Which of the following are mature cells, found in the bone matrix (GAP junctions to receive signals)

• Osteoblasts

• Osteocytes

• Osteoclasts

• Osteoprogenitor cells

Which of the following are stem cells, which produce osteoblasts and are found in the inner region of bone

• Osteocytes

• Osteoblasts

• Osteoclasts

• Osteoprogenitor cells

Which of the following are responsible for resorption/degrading of bone matrix (most active-low Ca2+)

• Osteoclasts

• Osteoblasts

• Osteoprogenitor cells

• Osteocytes

Which of the following are immature cells, synthesize new bone (most active-high Ca2+)

• Osteocytes

• Osteoprogenitor cells

• Osteoclasts

• Osteoblasts

Which of the following is true regarding compact bone vs spongy bone?

• Spongy bone has osteons and are not vascularized, compact bone has no osteons

• Spongy bone and compact bone are both composed of osteons, while spongy bone is not vascularized

• Spongy bone is not composed of osteons and is not vascularized, compact bone is composed of osteons

• spongy bone is not composed of osteons and is vascularized, compact bone is composed of osteons

Which of the following is an incomplete inner layer covering trabecular bone?

• Periosteum

• Endosteum

Which of the following isolates bone from surrounding tissues, route for blood and nerve entry, connections.

(2 layers)

• Endosteum

• Periosteum