The structural units of mature compact bone are called
A) lacunae.
B) osteocytes.
C) osteons.
D) canaliculi.
E) lamellae.
Answer: C
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Temporal summation takes place when
a. two EPSPs from the same presynaptic input occur so closely together in time that they add together or sum. b. an EPSP and an IPSP occur simultaneously in time and cancel each other out. c. two EPSPs that occur simultaneously from different presynaptic inputs add together or sum. d. action potentials occurring in two presynaptic inputs simultaneously converge upon the postsynaptic cell, initiating two different action potentials in the postsynaptic cell. e. none of these answers.
If a reduction of body mass is one's goal, then the factor in the animal energy equation one would most like to ________ is ________
a. decrease; EBMR b. decrease; Eloss c. decrease; Eproduction d. increase; Eproduction e. increase; Einput
In the flat skull bones, the middle spongy layer of bone sandwiched between two layers of compact bone is called the __________.
Fill in the blank(s) with the appropriate word(s).
The top long-distance runners probably have _______ proportion of slow muscle fibers in their leg muscles
A. a higher B. a lower C. the same