solutions
What type of glial cells are located in the CNS? - ANSWER- astrocytes and
oligodendrocytes
What type of glial cells are located in the PNS? - ANSWER- Schwann cells
What is the diameter of cell bodies? - ANSWER- 10-50 μm
What is the diameter of axons? - ANSWER- 1-20 μm
What is the velocity of information travel down a neuron? - ANSWER- 6 m/s/μm
(ex: 10 μm fiber = 60 m/s)
Neurons are _______-polar - ANSWER- multi
What is the flow of sensory input? - ANSWER- end organ --> peripheral nerves -->
spinal roots --> spinal cord --> brain
What is the flow of motor output? - ANSWER- brain --> spinal cord --> spinal roots
--> peripheral nerves --> end organ
why do we talk about nerve fibers instead of muscle fibers? - ANSWER- muscle
function is controlled by stimulation from the nerves; more energy is required to
activate muscle fibers than nerves
what type of cells are glial cells? - ANSWER- support cells
the ________ the fiber, the faster that actions can travel down - ANSWER- larger
what neurotransmitter is primarily used in the neuromuscular junction? -
ANSWER- acetylcholine