Low levels of calcium within cells are maintained by
A. a high number of voltage-gated and leakage channels for calcium in cell membranes.
B. frequent exocytosis and endocytosis of calcium-containing vesicles.
C. pumps that move calcium out of cells or into the sarcoplasmic reticulum.
D. osmosis of large amounts of water into cells that have any calcium within them.
C
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There are ________ prevertebral ganglia.
A. 5 B. 3 C. 2 D. 12 E. 4
The part of the vertebrae that transfers weight along the axis of the vertebral column is the
A) vertebral arch. B) vertebral body. C) articular processes. D) intervertebral space. E) transverse process.
The control of voluntary movement can be divided into what three steps?
What will be an ideal response?
The hard, dense bone that forms the outer surface of bones is:
A) compact bone. B) cancellous bone. C) spongy bone. D) articular cartilage.