What is the primary function of the nervous system? — The nervous system detects stimuli, processes information, and coordinates the body's responses.
What are the two main divisions of the nervous system? — The central nervous system (CNS) and the peripheral nervous system (PNS).
Which organs make up the central nervous system? — The brain and spinal cord.
What is the peripheral nervous system? — The peripheral nervous system consists of all nerves outside the brain and spinal cord.
What is a neuron? — A neuron is a specialized cell that transmits nerve impulses throughout the body.
What are the three main parts of a neuron? — The cell body, dendrites, and axon.
What is the function of dendrites? — Dendrites receive signals from other neurons or sensory receptors.
What is the function of the axon? — The axon carries nerve impulses away from the cell body.
What is the function of the myelin sheath? — The myelin sheath insulates the axon and increases the speed of nerve impulse transmission.
What is a synapse? — A synapse is the junction where one neuron communicates with another neuron or a target cell.
What are neurotransmitters? — Neurotransmitters are chemical messengers that transmit signals across a synapse.
What is the primary function of the brain? — The brain processes sensory information, controls body functions, and coordinates thoughts, memory, and movement.
What is the function of the spinal cord? — The spinal cord transmits signals between the brain and the rest of the body and controls reflexes.
What is a reflex? — A reflex is a rapid, automatic response to a stimulus without conscious control.
What is the role of sensory neurons? — Sensory neurons carry information from sensory receptors to the central nervous system.
What is the role of motor neurons? — Motor neurons transmit signals from the central nervous system to muscles and glands.
What is the role of interneurons? — Interneurons connect sensory and motor neurons within the central nervous system.
What is the somatic nervous system? — The somatic nervous system controls voluntary movements of skeletal muscles.
What is the autonomic nervous system? — The autonomic nervous system regulates involuntary body functions such as heart rate and digestion.
Why is the nervous system essential? — It enables communication between body parts, coordinates responses to stimuli, and helps maintain homeostasis.
