Chapter 6 - Skeletal System

Which of the following is not a function of the skeletal system?

• Primary storage site in the body for the minerals sodium and potassium

• Location of the red bone marrow, which produces red blood cells

• Storage of adipose tissue in yellow bone marrow

• Support and protection of the body and vital organs

• Functions in movement as the site of attachment for skeletal muscles

The branching network of bone in spongy bone is called

• Lamellae

• Lacunae

• Osteoclasts

• Trabeculae

• Osteoblasts

Blood cells are made in the red bone marrow by a process called

• Osteoporosis

• Osteogenesis

• Hematopoiesis

• Hematoporosis

• Hematosynthesis

Bones with a diaphysis and epiphysis are classified as

• Irregular bones

• Flat bones

• Short bones

• Long bones

• Sesamoid bones

The hard, dense bone that forms the outer surface of bones is

• Spongy bone

• Cancellous bone

• Compact bone

• Articular cartilage

• Dentin

Small cavities that are located between lamellae and contain osteocytes are called

• Lacunae

• Trabeculae

• Central canals

• Canaliculi

• Perforating canals

Why are collagen fibers a critical component of bone?

• Collagen fibers help trap water in the ECM

• Collagen fibers help the bone resist compression

• Collagen fibers act as "glue" to bind components together

• Collagen fibers help bone resist twisting, pulling, or stretching forces

• All of the above

The structural units of mature compact bone are

• Osteocytes

• Lacunae

• Canaliculi

• Osteons

• Lamellae

Long bones form via ____ ossification, while flat bones form via _____ ossification.

• Endochondral, intramembranous

• Intramembranous, endochondral

• Chondrocytal, osteocytal

• Osteocytal, chondrocytal

• None of the above

The matrix of bone is unique because it contains

• Collagen

• Elastic fibers

• Fat

• Mineral salts

• Blood