The Nervous System

HideShow resource information
View mindmap
  • Nervous System
    • Sense Organs
      • Eyes
        • Contains light receptors
          • Nucleus
          • Cytoplasm
          • Cell Membrane
          • Sensitive to light
      • Ears
        • Sound receptors
          • Sensitive to sound
          • Sensitive to changes in position
      • Nose
        • Smell receptors
          • Sensitive to chemical stimuli
      • Tounge
        • Taste receptors
          • Sensitive to bitter,salt,sweet and sour (chemical stimuli)
      • Skin
        • Sensitive to touch, pressure, pain and temperature change
    • Neurons and Effectors
      • Sensory neurons
        • Carry signals as electrical impulses
        • Travel from the receptors in the sense organs to the Central Nervous System (CNS)
      • Relay neurons
        • Carry signals from sensory neurons to motor neurons
      • Motor Neurons
        • Carry signals from CNS tor the effector muscles or glands
      • Effectors
        • Muscles and glands
        • Muscles contract in responce
        • Glands secrete hormones
    • Synapses
      • The connection between two neurons
      • The nerve signal is transferred by chemicals which diffuse (move) across the gap
      • These chemicals set off a new electrical signal in the next neuron
    • Reflex Arc
      • Stimulus
      • Sensory neurone
      • Relay Neurone
      • Motor neurone
      • Efffector
      • Responce
      • Receptor
    • Hormones vs. Nerves
      • Hormones
        • SLOWER message
        • Act for a LONG time
        • Act in a more GENERAL way
      • Nerves
        • Very FAST message
        • Act for a very SHORT time
        • Act on a very PRECISE area

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Nervous system, hormones and behaviour resources »