Content

• What is the primary function of the nervous system?

  The nervous system receives, transmits, and responds to information.
• How does the nervous system gather information?

  It gathers information from the external environment and the body's internal environment.
• What are the basic units that make up the nervous system?

  Nerve cells, also known as neurons.
• What are nerves composed of?

  Nerves are composed of cells called neurons.
• What is the role of neurons in the nervous system?

  Neurons carry messages from one part of the body to another.
• How do neurons transmit messages?

  They transmit messages as tiny electrical signals called nerve impulses.
• What are the two integrated systems of the nervous system?

  • Voluntary system
  • Involuntary system
• What is the term used for the electrical signals carried by neurons?

  Nerve impulses.
• How do the voluntary and involuntary systems of the nervous system differ?

  The voluntary system controls conscious actions, while the involuntary system controls automatic functions.
• What is the voluntary system composed of?

  Peripheral nerves
• What do peripheral nerves connect?

  They connect the central nervous system to the skin and muscles
• What are the two types of nerves in the voluntary system?

  Sensory neurons and motor neurons
• What is the function of sensory neurons?

  They carry messages from sense organs to the CNS
• What do motor neurons do?

  They carry messages from the CNS to tissues and muscles
• What does the Central Nervous System (CNS) control?

  The body and brain (mind)
• How is the brain protected?

  By the skull
• What protects the spinal cord?

  The spinal column
• What is the role of the Peripheral Nervous System?

  It connects the CNS to organs, limbs, and skin
• What type of information does the Peripheral Nervous System carry?

  Sensory and motor information
• What involuntary functions does the Peripheral Nervous System regulate?

  Functions like heartbeat and breathing
• What two networks make up the autonomic system?

  Sympathetic and parasympathetic systems
• What does the sympathetic system do?

  Prepares us for action by activating survival functions
• What is the role of the parasympathetic system?

  It moderates the sympathetic system and restores normal resting state
• What are neurons also known as?

  Nerve cells
• What are neurons responsible for?

  Receiving sensory input, sending motor commands, and relaying electrical signals
• What do sensory nerves transmit?

  Sensations such as pain and touch
• What do motor nerves control?

  Muscles
• What do autonomic nerves regulate?

  Automatic functions of the body
• What is the function of the myelin sheath?

  It allows electrical impulses to transmit quickly and efficiently
• What is the long fiber of a neuron called?

  Axon
• What are dendrites responsible for?

  Receiving information
• What are the main components of a neuron?

  • Cell body (soma)
  • Axon
  • Cell membrane
  • Dendrite
  • Myelin sheath
  • Terminal buttons
• What are the differences between sensory neurons and motor neurons?

  • Sensory neurons send information to the CNS
  • Motor neurons carry information from the CNS
• What are the functions of the Central Nervous System (CNS)?

  • Controls the body and brain
  • Processes sensory information
  • Sends motor commands
• What are the roles of the sympathetic and parasympathetic systems in the autonomic system?

  • Sympathetic: Prepares for action and survival
  • Parasympathetic: Restores normal resting state
• What is the primary function of autonomic nerves?

  To regulate automatic functions of the body
• Which automatic functions are regulated by autonomic nerves?

  Functions such as blood pressure and bladder function
• What are the key roles of autonomic nerves in the body?

  • Regulate automatic functions
  • Control blood pressure
  • Manage bladder function
• How many halves is the brain made up of?

  2 halves
• What connects the cerebral hemispheres?

  The corpus callosum