4.C Central Nervous System

What is the core of the nervous system?

• Spinal cord

• Brain

• Heart

• Lungs

What is the spinal cord composed of?

• A long bundle of neurons with a lighter outer section and a darker inner section

• A long bundle of muscles with a lighter outer section and a darker inner section

• A long bundle of bones with a lighter outer section and a darker inner section

• A long bundle of blood vessels with a lighter outer section and a darker inner section

What is the primary function of efferent neurons?

• Carry messages from the senses to the spinal cord

• Connect afferent neurons to the motor neurons

• Carry messages from the spinal cord to the muscles and glands

• Make up the bulk of the neurons in the brain

Where are interneurons primarily found?

• In the muscles

• In the center of the spinal cord

• In the glands

• In the sensory organs

What type of neuron is also known as sensory neurons?

• Efferent neurons

• Interneurons

• Afferent neurons

• Motor neurons

What is the function of afferent neurons?

• Carry messages from the spinal cord to the muscles and glands

• Connect the afferent neurons to the motor neurons

• Carry messages from the senses to the spinal cord

• Make up the bulk of the neurons in the brain

Which of the following statements is true about neurons in the brain and spinal cord?

• They cannot repair themselves

• They are immune to damage

• They are capable of repairing themselves

• They multiply rapidly

What does the Peripheral Nervous System (PNS) consist of?

• Only the brain

• Only the spinal cord

• All the nerves and neurons not contained in the brain and spinal cord

• Only the brain and spinal cord

Which of the following is a function of the Autonomic Nervous System?

• Voluntary responses

• Sensory perception

• Involuntary responses

• Muscle coordination

The Peripheral Nervous System (PNS) includes nerves and neurons that:

• Are only in the brain

• Are only in the spinal cord

• Run through the body but are not in the brain and spinal cord

• Are only in the central nervous system