720. Which of the following best describes the alveolar bone proper?
A. Woven bone and spongy bone.
B. Lamellar bone and bundle bone.
C. Bundle bone and cancellous bone.
D. Woven bone and lamellar bone.

721. Which of the following is not related to the incremental lines:
A. Resting lines.
B. Hunter-schreger bands.
C. Lines of Von Ebner.
D.Retzius lines.

722. Which of the following is not universal component of all hard tissues in man?
A. Collagen.
B. Calcium.
C. Phosphorous.
D.Water.

723. The major difference between cellular cementum and bone is the:
A.Blood supply.
B. Presence of Sharpey’s fibers.
C.Cellularity.
D. Organic matrix.

724.Sulcular epithelium is formed of:
A.Nonkeratinized stratified squamous epithelium.
B.Parakeratinized stratified squamous epithelium.
C.Orthokeratinized stratified squamous epithelium.
D. Columnar epithelium.

725. Which of the following is a wrong statement about the dentogingival junction?
A. It has an epithelial and a connective tissue component.
B. It shifts apically with age.
C. Its coronal end corresponds to the bottom of the gingival sulcus.
D. Its epithelial cells are keratinized stratified squamous.

726. Keratinized epithelium differs from nonkeratinized epithelium in that:
A. It contains granular cell layer.
B. Contain a higher glycogen content.
C. It does not contain basal lamina.
D. No tonofilaments are found in it.

727. The buccal mucosa:
A. Has a keratinized epithelium.
B. Is continuous with the gingival mucosa.
C. It is firmly attached to the underlying tissues.
D. Has numerous connective tissue papillae.

728. Masticatory mucosa has:
A. Elastic fibers in its lamina propria.
B. Elastic fibers in its blood vessels wall.
C. Stratum corneum.
D. No connective tissue papillae.

729. Which of the following is true of the sulcular epithelium?
A. Consists of keratinized epithelium.
B. Has submucosa.
C. Is nonkeratinized.
D. Contain connective tissue papillae.

730.Parakeratinized epithelium is found in:
A. Gingiva.
B. Vestibular fornix.
C. Floor of the mouth.
D. Ventral surface of tongue.

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