Nervous

The Nervous System

Multiple Choice

The CNS consists of the:

• Brain and nerve

• Brain and spine

• Brain and spinal cord

• Spinal and cranial nerve

Multiple Choice

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Multiple Choice

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Multiple Choice

• Nucleus

• Cell Body

• Axon

• Node of Ranvier

Open Ended

What is the function of the myelin sheath?

Multiple Choice

A nerve cell.

• Neuron
• Spinal cord
• Dendrite
• Brain

Multiple Choice

Branch-like extensions of the neuron that receive chemical messages and carry them to the cell body.

• Dendrites
• Neurons
• Nerves
• Spinal Cord

Multiple Choice

In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________

• Spinal cord, CNS

• CNS, muscle

• Spinal cord, muscle

• Muscle, CNS

Multiple Choice

What neuron is this?

• motor
• sensory
• relay
• reflex

Multiple Choice

What neuron is this?

• Relay
• Motor
• Reflex
• Sensory

Multiple Choice

What neuron is this?

• Relay
• Motor
• Reflex
• Sensory

Multiple Choice

Which number shows the motor neuron?

• 4
• 5
• 2
• 1

Multiple Choice

Salivary glands are an example of ...

• A receptor

• A relay

• A detector

• An effector

Open Ended

From watching the video and discussion with your teacher explain how messages are transmitted at the synapse.