Which of the following is associated with osteoclast reabsorption of bone?
A. Osteoblasts form collagen and proteoglycans.
B. Blood calcium is decreased.
C. Ca2+ is actively transported from blood to bone matrix.
D. Hydrogen ions form an acid environment in bone matrix.
E. The protein components of bone matrix are synthesized.
D
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A thickened area of scar tissue that is covered by a shiny, smooth epidermal surface is called a(n)
A) granulation tissue. B) scab. C) keloid. D) callus. E) abrasion.
Which of the following is NOT characteristic of epithelial tissues?
A, well vascularized B. Attached to basal lamina C. Desmorones along lateral surfaces D. Polarity of cells
Which facial bone contains a sinus?
A. Maxilla B. Mandible C. Nasal bone D. Sphenoid bone
Which of these muscles is NOT involved with the inspiration of air
a. diapghragm b. external intercostals c. scalenes d. transversus thoracis