What is the function of glial cells?
A) They carry messages.
B) They protect and cushion the brain.
C) They support neurons by supplying nutrients.
D) They move waste products out of the brain.
C
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Oligotrophic waters are usually hypoxic
Indicate whether this statement is TRUE or FALSE.
The peripheral nervous system consists of
A. the brain, spinal cord, and nerves. B. nerves and ganglia that lie outside the CNS. C. nerves in the entire nervous system. D. ganglia. E. the brain and spinal cord.
Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient
A) energy and transport proteins; down B) transport proteins; down C) energy and transport proteins; against D) transport proteins; against
Which type of sensory receptors becomes more sensitive when damaged tissues produce prostaglandins?
A) deep pressure receptors B) photoreceptors C) pain receptors D) temperature receptors