Chapter 3

Name 1 stimuli and its receptor

In your own words, explain what a neuron is.

Which of the following best describes the function of the myelin sheath?

• Insulates the neuron so it doesn't get cold

• Keeps the neuron stable

• Insulates the neuron so its signals can be passed on efficiently

• Keeps the neuron flexible

Roger is a 40 year-old who has been diagnosed with 'Multiple Sclerosis', leading to the degeneration of myelin sheaths on his neurons.

Describe the effects this might have on Roger's neurons.

What types of signals are received by the dendrites and sent by the axon terminal?

• Dendrites receive chemical signals, Axon Terminals send chemical signals

• Dendrites receive chemical signals, Axon Terminals send electrical signals

• Dendrites receive electrical signals, Axon Terminals send electrical signal

• Dendrites receive electrical signals, Axon Terminals send chemical signals

A ________________ is a chemical signal that is sent between neurons

A stimulus is:

• a visible change in the external or internal environment

• an observable change in the external or internal environment

• something that is perceived (given meaning by your brain)

• how it feels to chew 5 Gum

You've had a bright light shone into your face. Draw a stimulus response model of what you might do in response.

A gap between 2 neurons, where neurotransmitters are released into, is known as the:

• Synapse

• Axon Terminal

• Dendrite

• Node of Ranvier

Distinguish (explain the difference) between a motor neuron, sensory neuron, and an interneuron