The vertebral arch is formed by the pedicles and the
A) transverse spinous processes.
B) dorsal spinous processes.
C) laminae.
D) costal facets.
E) intervertebral disc.
C
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Autonomic _________ are collections of sympathetic postganglionic axons and parasympathetic preganglionic axons, as well as some visceral sensory axons
Fill in the blank with correct word.
Which of the following is involved in muscle relaxation?
a. Acetylcholinesterase removes ACh and the muscle cell returns to resting potential. b. Ca2+ is actively taken up by the lateral sacs when there is no longer an action potential. c. The cross bridges pull the filaments back to their original resting positions. d. Both a and b e. Both b and c
Which body region is controlled by the largest area of the motor cortex?
A. Trunk B. Toes C. Neck D. Shoulder E. Fingers
Membrane proteins that bind to signals by which cells communicate are called ________
A) receptors B) cell-identity markers C) enzymes D) carriers E) cell-adhesion molecules