HBS Neuron and Action Potential

Which substances are secreted at the endings of nerve cells?

• Neurotransmitters

• Lipids

• Antigens

• Antibodies

When an action potential is generated in a neuron, the electrical impulse flows from:

• axon to dendrite

• dendrite to axon

• cell body to dendrite

• synapse to axon

A nerve cell; a fundamental unit of the nervous system is called a

• Neuron

• Neurotransmitter

• Axon

• Dendrite

Which of the following is the correct sequence of action potential (impulse) movement along a neuron?

1. Axon 3. Axon terminal

2. Dendrite 4. Cell body

• 1,2,3,4

• 2,4,1,3

• 1,3,2,4

• 3,4,1,2

When Mrs. Jones sees a spider on the floor she jumps up and runs out into the hallway. Select the correct order for the neural messages associated with her actions.

• sensory neuron - motor neuron - interneuron

• motor neuron- visual neuron- interneuron

• sensory neuron- interneuron- motor neuron

• sensory neuron- motor neuron-interneuron

Information traveling from the CNS (Central Nervous System) to the PNS (Peripheral Nervous System) is taking the

• intermediate pathway

• neural pathway

• afferent pathway

• efferent pathway

Information traveling from the PNS (Peripheral Nervous System) to the CNS (Central Nervous System) is taking the

• efferent neuron pathway

• afferent pathway

• intermediate pathway

• nervous pathway

Which ions are involved in the action potential?

• sodium and potassium ions

• sodium and calcium ions

• potassium and calcium ions

• calcium, potassium and calcium

A neuron that communicates between other neurons and is found in the brain and spinal cord is a interneuron:

• True

• False

When the nerve cell in an action potential is at rest, the electrical charges around the cell membrane are:

• Negative outside, positive inside

• Negative on both

• Negative inside, positive out

• Positive on both