Exploring the Nervous System

What are the two main components of the central nervous system?

• Brain and spinal cord

• Brain and peripheral nerves

• Spinal cord and peripheral nerves

• Brain and sensory organs

Which part of the nervous system is responsible for voluntary movements?

• Autonomic nervous system

• Central nervous system

• Somatic nervous system

• Sympathetic nervous system

What is the primary function of neurons?

• To provide structural support to the brain

• To transmit electrical signals throughout the body

• To produce hormones

• To protect the central nervous system

Which of the following is NOT a part of the peripheral nervous system?

• Cranial nerves

• Spinal nerves

• Brain

• Sensory receptors

What is the role of synapses in the nervous system?

• To store neurotransmitters

• To connect neurons and facilitate communication

• To insulate neurons

• To generate electrical impulses

Which type of neuron carries signals from the central nervous system to muscles?

• Sensory neurons

• Motor neurons

• Interneurons

• Glial cells

What is the function of the myelin sheath?

• To slow down nerve impulses

• To protect the neuron from damage

• To speed up the transmission of nerve impulses

• To store neurotransmitters

What is the main function of the autonomic nervous system?

• To control voluntary muscle movements

• To regulate involuntary body functions

• To process sensory information

• To store memories

What is the gap between two neurons called?

• Axon

• Dendrite

• Synaptic cleft

• Node of Ranvier

Match the following terms with their definitions.

• Insulating layer that surrounds nerves, including those in the brain and spinal cord.

• axon

• Long, slender projection of a nerve cell that conducts electrical impulses away from the neuron's cell body.

• synapse

• Location at which a neuron can transfer an impulse to another cell with the use of neurotransmitters.

• myelin sheath

• The level of strength a stimulus must reach to be detected.

• threshold