Which osteon structure houses the cytoplasmic extensions of osteocytes?
A) Endosteum
B) Periosteum
C) Perforating canals
D) Canaliculi
Answer: D
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The small intestinal digestive enzymes
a. are secreted into the lumen, where they perform their function. b. act intracellularly within the brush borders. c. complete the digestion of carbohydrates. d. both (a) and (c) above. e. both (b) and (c) above.
The presence of an enzyme within a chemical system
A. increases activation energy. B. does not affect either activation energy or potential energy. C. increases potential energy. D. decreases activation energy.
Signs of meningeal irritation, such as nuchal rigidity, are MOST commonly seen in patients with a(n):
A) subdural hematoma. B) epidural hematoma. C) intracerebral hematoma. D) subarachnoid hemorrhage.
The process that removes ions such as potassium and hydrogen from the blood and places them into the nephron for removal from the body as urine is known as ________
A) glomerular filtration B) tubular reabsorption C) tubular secretion D) osmosis