Narrow passageways through the matrix of compact bone that connect the central canal to the lacunae are:
a. lamellae
b. canaliculi
c. trabeculae
d. perforating canals
Ans: b. canaliculi
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The link between peripheral receptor and cortical neuron is called a(n)
A) efferent pathway. B) spinocortical line. C) sympathetic chain. D) adaptation pathway. E) labeled line.
The ________ is a region of dense bone that surrounds and protects the membranous labyrinth
A) sella turcica B) ossicle C) auditory canal D) membranous labyrinth E) bony labyrinth
Which nerve carries sympathetic fibers that increase both heart rate and force of contraction?
A. Phrenic nerve B. Vagus nerve C. Sympathetic nerve from the cervical ganglion D. Sympathetic nerve from the celiac ganglion E. Glossopharyngeal nerve
Which of the following pacemaker cell populations has the slowest intrinsic rate of depolarization at about 20 times per minute?
What will be an ideal response?