NeuroPHS

• What is the main function of the Nervous System?

  Processing information
• What does the Nervous System integrate?

  Stimuli and responses
• What are the components of the Nervous System?

  Brain, spinal cord, nerves, sensory receptors
• What is the Nervous System responsible for?

  Sensory perceptions, mental activities, muscle movements, gland secretions
• What is the nature of nervous control?

  Electrical and fast acting
• What are the two main divisions of the Nervous System?

  Central Nervous System (CNS) and Peripheral Nervous System (PNS)
• What are the components of the Central Nervous System (CNS)?

  Brain and spinal cord
• Can neurons in the CNS regenerate if damaged?

  No
• What is the origin of the CNS structures?

  Neural tube
• What is the function of the CNS?

  Control center, coordinates body's activities
• What is the composition of the Peripheral Nervous System (PNS)?

  Peripheral nerves
• Can neurons in the PNS regenerate if damaged?

  Yes
• How many pairs of spinal and cranial nerves are there in the PNS?

  31 spinal, 12 cranial
• What is the function of the Afferent Division of the PNS?

  Carry information to CNS
• What is the function of the Efferent Division of the PNS?

  Carry information from CNS to muscle and glands
• What is the function of the Somatic Nervous System?

  Relay information between skin, skeletal muscles, and CNS
• What type of control does the Somatic Nervous System have?

  Voluntary control
• What is a reflex?

  Automatic response to stimulus
• Where is the Enteric Autonomic Nervous System (ANS) located?

  Digestive tract
• What type of control does the Autonomic Nervous System have?

  Involuntary control
• What is the function of the Autonomic Nervous System?

  Relay information from CNS to organs
• What is the function of the Parasympathetic Nervous System?

  Controls body in times of rest
• What is the function of the Sympathetic Nervous System?

  Controls body in times of stress
• What are the two main types of cells in nervous tissue?

  Neurons and neuroglia
• What is the role of neurons in the nervous system?

  Basic unit of structure and function
• What is the function of neurons?

  Conduct impulses, receive stimuli, transmit action potentials
• Where are neurons found?

  Brain, spinal cord, nerves
• What is white matter composed of?

  Axons with myelin sheath
• What is the function of myelin?

  Insulates axons, enables faster nerve impulses
• What is the function of Schwann cells?

  Wrap around some axons
• What is gray matter composed of?

  Axons without myelin sheath
• What is the function of neurons in terms of sensory information?

  Take in sensory information, decide what to do with it
• What is the gap between neurons called?

  Synapse
• What are the three main parts of a neuron?

  Cell body, dendrites, axons
• What is the function of the cell body in a neuron?

  Houses the nucleus
• What are the two roles of the cell body in a neuron?

  Directs metabolism, no role in neural signaling
• What is the function of dendrites in a neuron?

  Receive impulses, carry them toward cell body
• What is the role of dendrites in a neuron?

  Input structure
• What is the function of the axon in a neuron?

  Carries impulses away from cell body
• What is the role of the axon in a neuron?

  Output structure