Function of the Nervous System

Which of the following is NOT a function of the nervous system?

• Input of information

• Integration of information

• Output in response

• Movement of muscles

What are neurons?

• Bone cells

• Heart cells

• Nerve cells

• Muscle cells

Which of the following is a characteristic of neurons?

• They are not electrically excitable

• They cannot conduct electrical signals

• They transmit signals over long distances

• They are only found in the heart

What is the function of dendrites in a neuron?

• To transmit signals to other neurons

• To receive signals from other neurons

• To produce neurotransmitters

• To protect the neuron

What part of the neuron is responsible for transmitting signals away from the cell body?

• Dendrites

• Nucleus

• Axon

• Synaptic terminals

Where are neurotransmitters released in a neuron?

• At the dendrites

• At the nucleus

• At the axon hillock

• At the synaptic terminals

What is the term used for the junction between two neurons?

• Axon hillock

• Synaptic cleft

• Nucleus

• Cell body

What is the myelin sheath primarily composed of?

• Lipid bilayer

• Protein chains

• Carbohydrate particles

• Nucleic acids

What are the gaps in the myelin sheath along the axon called?

• Axon hillock

• Nodes of Ranvier

• Schwann cells

• Dendrites

What is the function of the myelin sheath?

• To generate electrical impulses

• To protect the axon from damage

• To speed up the transmission of electrical impulses along the axon

• To connect neurons together