CH 7 Pt 1: Skeletal System - Amoeba Sisters video

What is the primary protein found in bones?

• Myosin

• Elastin

• Collagen

• Keratin

Which type of skeleton is characterized by a hard outer layer?

• Exoskeleton

• Endoskeleton

• Hydrostatic skeleton

• Cartilaginous skeleton

How many bones does an adult human typically have?

• 206

• 305

• 187

• 250

What type of bone is the femur classified as?

• Irregular bone

• Short bone

• Long bone

• Flat bone

Which type of bone tissue contains bone marrow?

• Soft bone tissue

• Dense bone tissue

• Spongy bone tissue

• Compact bone tissue

What is the role of osteoblasts?

• Producing blood cells

• Making bone

• Breaking down bone

• Storing minerals

Approximately what percentage of a skeleton is remodeled each year?

• 5-10%

• 25-30%

• 1-2%

• 15-20%

What is the primary function of calcium in the skeletal system?

• Energy storage

• Muscle contraction

• Blood clotting

• Bone growth

What happens during the initial phase of bone healing?

• Bone marrow is produced

• A fracture hematoma forms

• Osteoclasts break down bone

• Calcium is deposited

What condition is characterized by brittle bones due to collagen production issues?

• Rickets

• Osteoporosis

• Osteogenesis imperfecta

• Arthritis

Tags

NGSS.HS-LS3-2