The spinal cord begins at the ________ and ends at the ________.
A. foramen magnum; first lumbar vertebrae
B. fifth cervical vertebrae; coccyx
C. foramen magnum; sacrum
D. second cervical vertebrae; first lumbar vertebrae
Answer: A
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A. stem cells B. antigen-presenting cells C. plasma cells D. T cells E. macrophages
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Indicate whether the statement is true or false
The first part of the renal tubule is called the ____________ and is specialized for ____________
A) collecting duct; reabsorption of water B) distal convoluted tubule; reabsorption of water C) distal convoluted tubule; secretion of additional wastes into the urine D) loop of Henle; creation of a concentration gradient in the interstitial fluid E) proximal convoluted tubule; reabsorption of electrolytes and other nutrients
All of a muscle cell's lactate is synthesized
a. in Krebs cycle reactions b. from acetyl CoA c. directly from glucose d. from pyruvate e. in chemiosmosis