A diffuse axonal injury:
A) is a specific, grossly observable brain injury that can easily be diagnosed with a computer tomography scan of the head.
B) involves stretching, shearing, or tearing of the extension of the neuron that conducts electrical impulses away from the cell body.
C) results in severe stretching or tearing of the portion of the nerve cell that receives sensory messages from the rest of the body.
D) is generally associated with better neurologic outcomes than a cerebral concussion because permanent brain damage does not occur.
Answer: B) involves stretching, shearing, or tearing of the extension of the neuron that conducts electrical impulses away from the cell body.
You might also like to view...
A rise in cortisol would cause an increase in each of the following except
A) the rate of glucose synthesis by the liver. B) the rate of glycogen formation by the liver. C) the level of fatty acids in the blood. D) fatty acid metabolism by muscle cells. E) ACTH levels.
Which one of the following best describes the order of a somatic reflex?
A. Somatic receptor ? interneuron ? afferent nerve fiber ? efferent nerve fiber ? skeletal muscle B. Somatic receptor ? efferent nerve fiber ? interneuron ? afferent nerve fiber ? skeletal muscle C. Somatic receptor ? afferent nerve fiber ? interneuron ? efferent nerve fiber ? skeletal muscle D. Somatic receptor ? efferent nerve fiber ? afferent nerve fiber ? interneuron ? skeletal muscle E. Somatic receptor ? afferent nerve fiber ? interneuron ? efferent nerve fiber ? smooth muscle
What is menarche?
A. Age at which breasts begin to develop B. Age at first ejaculation C. Age of last menstruation D. Age of first menstruation E. Age at which a woman gives birth to her first child
Which of the following statements regarding the determination of stimulus intensity is true?
A. The only means of detecting intensity changes is through recruitment of greater numbers of sensory units. B. The durationĀ of receptor potentials decreases with increasing stimulus intensity. C. The frequency of action potentials increases with increasing stimulus intensity. D. Stronger intensity stimuli cause rapid adaptation, while weaker stimuli cause slower adaptation. E. The amplitude of action potentials increases with increasing stimulus intensity.