The first cell type to exit the blood and move into infected tissues is _______.
a. natural killer cell
b. neutrophil
c. lymphocyte
d. eosinophil
e. monocyte
Answer: b. neutrophil
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If a stimulating electrode is placed in the middle of a resting axon and an above-threshold voltage is applied to the electrode action potentials
A) will start at that point and travel in both directions in the axon. B) will start at that point and proceed only toward the axon terminal. C) will not occur. D) will start at that point and proceed only toward the cell body.
Anatomy and physiology are difficult to separate because
A) physiological functions in an organism are ongoing. B) our understanding of physiology is changing more than our understanding of anatomy. C) physiological functions depend on anatomical structures. D) body parts take up space.
Which of the following is not a characteristic of the enteric nervous system?
A. It innervates glands. B. It does not arise from the brainstem. C. It does not arise from the spinal cord. D. Its reflex arcs are associated with the spinal cord. E. It innervates smooth muscle.
Which part of the spinal cord carries sensory information?
A. Commissure B. Ventral root C. Column D. Dorsal root