Nervous System Test F21

The direction of a nerve impulse always travels

• from axons to cell bodies to dendrites
• from cell bodies to dendrites to axons
• from dendrites to cell bodies to axons
• from axons to brain to muscles

The resting potential indicates that the inside of the neuron is ________ compared to the outside

• positive
• negative
• inactive
• deactivated

In humans, transmission of nerve impulses across a synaptic cleft is carried out by ________.

• sodium ions
• potassium ions
• neurotransmitter molecules
• carbon ions

Impulse conduction is fastest in neurons that are:

• myelinated
• sensory
• motor
• unmyelinated

Letter D represents the...

• synaptic cleft
• receptor
• neurotransmitter
• ions

Letter f represents the...

• neurotransmitter
• cell membrane
• receptor
• ions

Letter C represents the... (there are 2 C's in the diagram-they are the same thing)

• receiving neuron
• synaptic cleft
• receptor
• ions

The collective (as a group) name for dopamine, serotonin and noradrenaline is:

• lipids
• neurotransmitters
• hormones
• ions

What is letter D? (BRIGHT BLUE)

• skin
• spinal cord
• sensory neuron
• ions

What is letter E? (RED)

• motor neuron
• integration center
• interneuron
• ions