Nervous System

What are two parts of the Central Nervous System?

• brain and spinal cord

• spinal cord and motor neurons

• motor neurons and sensory neurons

• brain and sensory neurons

If you step on a nail... what type of neuron will take that signal TO the spinal cord?

• interneurons

• motor

• sensory

• receptors

What part of the neuron receives or invites information?

• axon

• dendrite

• cell body

• axon terminal

What part of the neuron is a long fiber that sends information toward other cells?

• dendrite

• synapse

• cell body

• axon

When a neuron is depolarized, what enters the neuron to change the charge to positive?

• sodium

• potassium

• calcium

• acetylcholine

When a neuron is resting, the inside of the axon has a _____ charge.

• positive

• negative

Most of the time, the impulse changes to _____ as it moves across the synapse to other neurons.

• electrical

• chemical

• mechanical

• radioactive

What are the chemicals used by a neuron to transmit an impulse across a synapse to another neuron?

• neurotransmitters

• neuroconnectors

• gap jumpers

• impulses

The neuroglial cells that produce the myelin sheaths to cover the axons are called _____.

• oligodendrocytes

• astrocytes

• ependymal cells

• microglia

What is the largest part of your brain?

• cerebellum

• cerebrum

• diencephalon

• brain stem