BIOLOGY PSYCH

• What are sensory neurons compared to?

  Messengers carrying signals to the CNS
• What are dendrites in a sensory neuron?

  Branching extensions that receive signals
• What is the name of the long projection that extends from the neuron's cell body?

  axon
• What is the name of the insulating layer that surrounds the axon?

  myelin sheath
• What do sensory neurons do?

  They carry signals from sensory receptors to the CNS
• What is the name of the branching projections that extend from the neuron's cell body?

  dendrites
• What are the main structural components of a neuron?

  • Cell body (soma)
  • Dendrites
  • Axon
  • Myelin sheath
  • Node of Ranvier
  • Axon terminal
• What types of information do sensory neurons pick up?

  Light, sound, and touch information
• What are the nodes of Ranvier associated with?

  Myelin sheath on the axon
• What is the main component located in the middle of sensory neurons?

  Cell body (soma)
• What are the key structural components of sensory neurons?

  • Cell body (soma) in the middle
  • One main axon covered in myelin sheath
  • Nodes of Ranvier along the axon
  • Multiple dendrites on one side
• What is the primary function of sensory neurons?

  Transmit signals to the central nervous system
• Why is the structure of sensory neurons compared to messengers?

  It helps carry sensory information effectively
• What is the function of the myelin sheath in sensory neurons?

  It protects the axon and speeds up signals
• What is the role of the cell body (soma) in a neuron?

  Maintains the cell's functions and contains organelles
• What is the role of synaptic end bulbs?

  Release neurotransmitters to communicate with other cells
• What is the axon in a sensory neuron?

  A long structure that transmits electrical signals
• How do dendrites contribute to a sensory neuron’s function?

  They pick up stimuli like light and sound
• What is the name of the central part of a neuron?

  cell body (soma)
• What are the main structural components of a neuron?

  • Cell body (soma)
  • Dendrites
  • Axon
  • Myelin sheath
  • Node of Ranvier
  • Axon terminal
• What is the function of the myelin sheath?

  Insulates the axon and increases signal speed
• What is the name of the branching projections that extend from the neuron's cell body?

  dendrites
• What is the axon terminal?

  End of the axon that releases neurotransmitters
• What is the name of the central part of a neuron?

  cell body (soma)
• What are the key components of the structure of a sensory neuron and their functions?

  • Dendrites: Receive external stimuli and convert them into electrical signals
  • Cell body: Contains the nucleus and organelles to maintain the cell
  • Myelinated axon: Transmits the electrical signals rapidly to the central nervous system
  • Axon terminals: Release neurotransmitters to pass the signal to the next neuron
• How does the myelin sheath affect the transmission of signals along the axon?

  • Myelin sheath acts as an insulator
  • It speeds up the transmission of electrical signals by allowing saltatory conduction
  • Increases the speed of signal propagation along the axon
• What is the name of the long projection that extends from the neuron's cell body?

  axon
• What are sensory neurons responsible for?

  Converting external stimuli into nerve impulses
• How do sensory neurons help the brain?

  By providing information about the environment
• Where do the nerve impulses generated by sensory neurons travel to?

  The central nervous system
• What is the name of the insulating layer that surrounds the axon?

  myelin sheath
• How do dendrites function in sensory neurons?

  They receive signals from sensory receptors
• What is the path of a nerve impulse in a sensory neuron?

  Dendrites -> Cell body -> Myelinated axon -> Axon terminals
• What is the purpose of the myelin sheath around the axon of a sensory neuron?

  To increase the speed of nerve impulse transmission
• How do sensory neurons convert external stimuli into nerve impulses?

  They convert external stimuli like light or pressure into electrical signals
• Where are sensory neurons found in the body?

  Receptors such as the eyes, ears, tongue, skin
• Where do sensory neurons carry nerve impulses to?

  The spinal cord and brain
• What happens when nerve impulses from sensory neurons reach the brain?

  They are translated into sensations
• Do all sensory neurons reach the brain?

  No, some stop at the spinal cord
• What do sensory neurons that stop at the spinal cord allow for?

  Quick reflex actions