All of the following are true of the lining of the stomach except that it
A) has a simple columnar epithelium.
B) is covered by thick, alkaline mucus.
C) is constantly being replaced.
D) contains gastric pits.
E) recycles bile.
Answer: E
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The following are important steps in the process of endochondral ossification. What is the correct order for these events? 1. Enlarged chondrocytes die. 2. Osteoblasts replace calcified cartilage with spongy bone. 3. Chondrocytes enlarge and the surrounding matrix begins to calcify. 4. Blood vessels grow around the edges of the cartilage. 5. Perichondrial cells become osteoblasts and produce a
superficial layer of bone. A) 3, 1, 5, 4, 2 B) 1, 3, 5, 4, 2 C) 1, 5, 3, 4, 2 D) 2, 3, 1, 5, 4 E) 3, 1, 4, 5, 2
Otosclerosis affects the
A) auditory ossicles. B) auditory nerve. C) tympanic membrane. D) cochlea.
The process of bone repair includes these steps: a: Fracture hematoma formsb: Bone is remodeledc: Fibrocartilaginous callus formsd: Bony callus formsThe correct chronological order for these steps is
A. a - b - d - c B. d - a - b - c C. a - c - d - b D. c - d - b - a E. b - a - c - d
How do muscles store their energy?
A. Bound to troponin B. In their mitochondria C. Bound to myoglobin D. In their terminal cisterns E. As glycogen