Understanding the Nervous System

What is the basic functional unit of the nervous system?

• Axon

• Neuron

• Dendrite

• Synapse

Which part of the neuron receives signals from other neurons?

• Axon

• Cell body

• Dendrites

• Myelin sheath

What is the role of the myelin sheath?

• To receive signals from other neurons

• To generate electrical signals

• To speed up the transmission of electrical signals

• To connect two neurons together

What happens at a synapse?

• Electrical signals are converted into chemical signals

• Chemical signals are converted into electrical signals

• Neurons physically connect with each other

• Myelin sheath is formed

Which part of the nervous system includes the brain and spinal cord?

• Central nervous system

• Peripheral nervous system

• Autonomic nervous system

• Somatic nervous system

What is the main function of the peripheral nervous system?

• To process information

• To connect the central nervous system to the rest of the body

• To protect the brain and spinal cord

• To generate thoughts and emotions

Which type of neuron is responsible for carrying signals towards the central nervous system?

• Motor neurons

• Sensory neurons

• Interneurons

• Axons

What is the role of motor neurons?

• To carry signals from the CNS to muscles and glands

• To process information in the brain

• To carry signals from sensory organs to the CNS

• To insulate neuron axons

How do sensory receptors communicate with the nervous system?

• By releasing hormones into the bloodstream

• By generating electrical signals in response to stimuli

• By physically moving towards the central nervous system

• By increasing the temperature of the body

What is the main difference between the somatic and autonomic nervous systems?

• The somatic nervous system controls voluntary movements, while the autonomic controls involuntary actions.

• The autonomic nervous system is part of the central nervous system, while the somatic is not.

• The somatic nervous system controls the brain, while the autonomic controls the spinal cord.

• There is no significant difference; they are just two terms for the same system.