In his studies of nerve conduction, Hermann von Helmholtz noted ...

[savannahhooper]

In his studies of nerve conduction, Hermann von Helmholtz noted that
 
  A) electrical signal speeds differ from nerve to nerve.
  B) nerve signal conduction is at the speed of light.
  C) nerves conduct signals faster than do electrical wires.
  D) nerves conduct signals more slowly than wires conduct electricity.
  E) different sensory systems use different conduction speeds.

Question 2

Based on his observation of brain damage and behavioral difficulties in a stroke victim, Paul Broca concluded that
 
  A) the control of speech is a function of the left hemisphere.
  B) the right hemisphere controls motor movements on the right side of the body.
  C) damage to the right hemisphere impairs speech.
  D) different regions of the brain control heart rate and breathing, purposeful movements, and sensory function.
  E) muscle atrophy after a stroke results from a loss of fluid pressure within the brain ventricles.

[ASDFGJLO]

Answer to Question 1

Answer: D
Rationale: In his studies of nerve conduction, Hermann von Helmholtz noted that nerves conduct signals more slowly than wires conduct electricity.

Answer to Question 2

Answer: A
Rationale: Based on his observation of brain damage and behavioral difficulties in a stroke victim, Paul Broca concluded that the control of speech is a function of the left hemisphere.