Sci

• Central Nervous System


  Receives and processes all information from all parts of and controls the entire organ system of the body
• Spinal Cord


  Connects the brain and the PNS, Transmits impulses all over the body to and from the brain, Responsible for involuntary movements
• Sympathetic Nervous System

  • Arouses body to expend energy
• Parasympathetic Nervous System


  • Rest and Digest
• Autonomic Nervous System


  • Regulates all activities that are involuntary or done without conscious will
• Somatic Nervous System


  • Regulates the activities that are under conscious control
• Peripheral Nervous System

  Carries impulses from the sensory nerves to the CNS and from the CNS to the motor nerves
• Brain


  Control center of the CNS
• Cerebrum


  The entire top part of the brain
• Spinal Cord is about 40-50cm long
• Cerebellum


  The underpart of the brain
• Brainstem


  Connector of the Cerebrum and the Spinal Cord
• Neuron

  A nerve cell and is the primary unit of the nervous system
• Brain contains 85 billion neurons
• Soma


  Area in a neuron where information is taken together
• Motor or Effective Neurons


  • Carries impulses from the Band SC to the muscles
• Axon


  Area in a neuron where signals proceed if they are strong enough
• If the signal is strong enough, they would proceed into the axon
• Affective Neurons


  • Carries impulses from the sense organs to
• Axon


  • Myelin, an insulatory material that helps to prevent the signal from degrading
• Sensory or the SC and B Interneurons or Associative Neurons

  • Located in the CNS, analyzes and interprets impulses
• Signal reaches the axon terminals

  Causes the release of neurotransmitter
• Axon hillock


  Area in a neuron where information is put together
• Control Center


  The Nervous system
• Signals picked up by dendrites

  Electrical changes in a neuron that are interpreted in an area called the soma or the cell body which contains the nucleus
• Communicating System

  • The Nervous System and the Endocrine System
• Sensors

  Sight, Taste, Smell, etc.
• Homeostasis is the state of steady internal, physical, chemical, and social conditions maintained by living systems
• Nucleic Acids

  • Nucleotides
  • Deoxyribonucleic Acid
  • Thymine
  • Adenine
  • Guanine
  • Cytosine
  • Sugar-Phosphate Backbone
  • Base Pair
  • Ribonucleic Acid
  • Uracil
  • Single backbone
• Carbohydrates

  • Monosaccharides
  • Protein
  • Amino Acids
  • Lipids
  • Fatty acids
  • Glycerol