Question

1. (1/2 point each). label the following diagram.
2. (1/2 point each) label the following diagram.

Explanation:

1. For the bone diagram:

• A is spongy bone which has a porous structure.
• B is the epiphysis, the end - part of a long bone.
• C is the diaphysis, the shaft of the long bone.
• D is articular cartilage which covers the ends of bones in joints.
• E is the epiphyseal plate, responsible for bone growth in length.
• F is the periosteum, a connective tissue covering the bone.
• G is compact (cortical) bone which is dense and hard.
• H is the medullary cavity which contains bone marrow.
• I is the epiphysis (another end of the long bone).

1. For the tooth diagram:

• A is enamel, the hard outer - layer of the tooth.
• B is dentin, the layer beneath the enamel.
• C is the pulp, which contains nerves and blood vessels.
• D is the gingiva (gum), the soft tissue surrounding the tooth.

Answer:

13.
A. Spongy bone
B. Epiphysis
C. Diaphysis
D. Articular cartilage
E. Epiphyseal plate
F. Periosteum
G. Compact (cortical) bone
H. Medullary cavity
I. Epiphysis
14.
A. Enamel
B. Dentin
C. Pulp
D. Gingiva (gum)