11) The connective tissue covering the outer surface of a bone is (the)

A) matrix.

B) osteon.

C) periosteum.

D) endosteum.

E) articular cartilage.

12) The bones of the limbs are classified as

A) short bones.

B) long bones.

C) flat bones.

D) sesamoid bones.

E) irregular bones.

13) Which of the following is found only in compact bone?

A) trabeculae

B) canaliculi

C) osteoblasts

D) osteons

E) marrow

14) The medullary cavity of a long bone is lined with ________.

A) periosteum

B) endosteum

C) lacunae

D) lamellae

E) osteon

15) The shaft of a long bone is called the ________.

A) epiphysis

B) trabecula

C) canaliculus

D) diaphysis

E) lamella

16) Tarsal bones are classified as ________ bones.

A) long

B) flat

C) short

D) irregular

E) sesamoid

17) Small channels, called ________, radiate through the matrix of bone.

A) canaliculi

B) lacunae

C) lamellae

D) perforating canals

E) Haversian canals

18) Bone-forming cells are called ________.

A) osteoclasts

B) osteocytes

C) osteons

D) ossification centers

E) osteoblasts

19) ________ are giant bone cells with 50 or more nuclei.

A) Osteocytes

B) Osteons

C) Osteoblasts

D) Canaliculi

E) Osteoclasts

20) In the skeletal system, compact bone is usually located

A) where stresses come from a limited range of directions.

B) where stresses arrive from many directions.

C) only in a narrow ring around the diaphysis of long bones.

D) in direct contact with articular cartilages.

E) where bones are not heavily stressed.