Understanding the Nervous System

What is the main function of the nervous system?

• To digest food and absorb nutrients.

• To coordinate and control body responses to stimuli.

• To circulate blood throughout the body.

• To provide structural support to the body.

Name the two main parts of the nervous system.

• Cerebral cortex and spinal cord

• Central nervous system and peripheral nervous system

• Autonomic nervous system and somatic nervous system

• Brain and heart

What is a neuron?

• A neuron is a type of blood cell.

• A neuron is a hormone that regulates mood.

• A neuron is a type of muscle cell.

• A neuron is a specialized cell that transmits information in the nervous system.

What role do neurotransmitters play in the nervous system?

• Neurotransmitters facilitate communication between neurons in the nervous system.

• Neurotransmitters are responsible for muscle contraction.

• Neurotransmitters act as hormones in the bloodstream.

• Neurotransmitters store genetic information in neurons.

How does the central nervous system differ from the peripheral nervous system?

• The CNS processes information and coordinates activity, while the PNS connects the CNS to the rest of the body.

• The CNS is only involved in voluntary movements, while the PNS controls involuntary functions.

• The CNS is responsible for reflex actions, while the PNS processes sensory information.

• The CNS connects the body to the environment, while the PNS processes emotions.

What is the function of the spinal cord?

• The spinal cord produces hormones for the body.

• The spinal cord transmits signals between the brain and the body, and coordinates reflexes and motor control.

• The spinal cord filters toxins from the blood.

• The spinal cord is responsible for digestion and metabolism.

What are reflex actions and how do they occur?

• Reflex actions are conscious decisions made by the brain.

• Reflex actions are involuntary responses to stimuli that occur via a reflex arc, allowing for quick reactions without conscious thought.

• Reflex actions require extensive thought and planning.

• Reflex actions are always painful and harmful.

What is the role of the brain in the nervous system?

• The brain is responsible for digestion.

• The brain regulates body temperature.

• The brain only stores memories.

• The brain processes information and coordinates the activities of the nervous system.

How do sensory neurons differ from motor neurons?

• Sensory neurons only function in the peripheral nervous system.

• Motor neurons are responsible for processing sensory information.

• Sensory neurons carry information to the CNS; motor neurons carry information from the CNS.

• Sensory neurons transmit signals from the muscles to the brain.

What is the significance of the autonomic nervous system?

• The significance of the autonomic nervous system lies in its role in regulating involuntary bodily functions and maintaining homeostasis.

• It controls voluntary muscle movements.

• It regulates the body's immune response.

• It is responsible for conscious thought processes.