Author Question: A scan shows that a particular substance has spread throughout the body via the bloodstream but has ... (Read 67 times)

chandani · **on:** Jun 22, 2018

A scan shows that a particular substance has spread throughout the body via the bloodstream but has not entered the brain. This finding demonstrates the existence of:

a. the blood-brain barrier.
b. the doctrine of specific nerve energies.
c. blood efficacy.
d. medicine effects.

Question 2

Experiencing hunger or seeing color in the environment are possible via the:

a. sensory neurons.
b. interneurons.
c. motor neurons.
d. glial cells.