The electrical signals that are propagated along axons, regulating and coordinating body activities, are known as___________.
Fill in the blank(s) with the appropriate word(s).
action potentials
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The thin strand of pia mater that helps to anchor the spinal cord to the coccyx is the
A. coccygeal tendon. B. terminus coccyx. C. conus medullaris. D. filum terminale. E. cervical enlargement.
A person whose genetic makeup makes him or her a better marathon runner than a sprinter probably has more ________ in his or her leg muscles.
A) fast fibers B) intermediate fibers C) slow fibers D) dark fibers E) red fibers
Why is twisting movement not allowed at the elbow joint?
A. Because the end of the humerus fits into a broad, shallow depression near the end of the ulna. B. Because it only allows movement in two planes. C. Because the elbow joint is a ball-and-socket joint. D. Because the movement of the elbow joint is determined by ridges and flanges on the humerus.
Deoxyribose is a sugar found in
A. RNA. B. DNA. C. glycogen. D. starch. E. ATP.