Science Nervous System

• parasympathetic nervous system


  kicks in and stimulate reaction the body into its normal state
• sympathetic nervous system


  works when a person is in a tough situation
• autonomic nervous system


  which controls the voluntary

  actions of the body such as breathing, heartbeat, digestion

  and urination.
• somatic nervous system


  is composed of the cranial nerves

  and spinal nerves.
• PNS or Peripheral Nervous System


  Refers to the part of the nervous system

  outside the brain and spinal cord.
• pituitary gland


  IS A PROTRUSION OFF THE HYPOTHALAMUS AT

  THE BASE OF THE BRAIN.
• Hypothalamus


  IS THE CONTROL CENTER

  OF THE HEMEOSTASIS OF THE

  ENVIRONMENT

  - IT RECEIVES SIGNALS OF THE STATE OF THE

  BODY AND REGULATES BODY

  TEMPERATURE, THIRST, AND APPETITE.
• Neurotransmitter


  The neurons transport message from

  one neuron to another with the use of

  certain chemical called
• Synapse


  In order for a message to be

  transferred, the message will

  jump into the space in between

  neurons called
• Dendrites


  When the axon terminals release

  neurotransmitters to the synapse they will be

  received by the fibers the project in the

  adjacent neuron called
• Axon


  IS A LONG PROJECTION FROM THE BODY

  WHICH CARRIES THE IMPULSES IN THE NERVES TO

  KNOB-LIKE SWELLINGS AT THE END OF THE AXON

  THAT RELEASE NEUROTRANSMITTERS CALLED
• Myelin Sheeth


  IS TO INCREASE THE SPEED AT WHICH THE

  IMPULSES PROPAGATE ALONG MYELINATED

  FIBERS.
• Nissle Bodies


  - GRANULAR STRUCTURE

  - PRODUCED ROUGH ENDOPLASMIC RETICULUM

  WITH ROSETTES OF FREE RIBOSOMES

  - IS TO AID IN THE PRODUCTION AND DISPERSAL

  OF CHEMICALS SUCH AS PROTEINS AND

  PEPTIDES.
• Neuron


  - Is composed of the cell body or the

  "soma" that contains the nucleus of the

  cell.
• Neuron


  ❖ Is also responsible

  for communicating

  information

  through electrical

  and chemical

  signals.
• Effector


  Its act on the impulses from its control

  center that will counteract the change

  and return the internal and external cell

  environment to a balance state.
• Control Center


  Is the one which receives impulses from

  the receptors and send command to the

  effector to counteract the change in the

  environment.
• Receptor


  It detects and alerts the proper control

  center to counteract it in order to return

  the cell and the overall system into a

  balanced state
• Change


  is anything that requires a cell to react.
• Stimulus


  Is anything in the internal or external

  environment that "triggers" a

  response to any part of the body.
• Reflex


  Is an automatic response to a stimuli

  that does not need thought or

  thinking.
• Spinal Cord


  Is a cylindrical bundle of nerve fibers

  that extends the medulla and vertebral

  column.
• Brain


  Is the main organ in the nervous

  system which receives impulses from

  the body, process data, initiates

  appropriate responses to stimuli and

  regulates and maintains hemostasis in

  the body.
• Homeostasis


  Is the state of stability

  inside an organism's

  body.
• Nervous system


  Is the organ system which

  performs many functions in

  the body, mostly for control

  and regulations.
• Components of the Earth

  Atmosphere, Lithosphere, Hydrosphere, Biosphere
• Atmosphere


  is the gaseous layer that surrounds the Earth.
• Lithosphere


  The solid outer part of the Earth that provides a platform for most life-forms.
• Hydrosphere


  The liquid realm of Earth
• Biosphere


  part of Earth in which life exists including land, water, and air or atmosphere
• Life layer


  are zone of interactions among biosphere, lithosphere, atmosphere.
• Seismology


  a branch of geophysics which is concerned with the study of Earthquakes.
• Seismic Waves


  Are vibrations that are usually generated by earthquakes or explosions and are propagated within the earth.
• Seismograph


  Used to record magnitude of seismic waves
• Seismometer


  Used to detect magnitude of seismic waves
• Body waves


  travels through the Earth's mantle and crust.
• Two types of body waves

  P wave (Primary waves) S wave (Secondary waves)
• Surface Waves


  travel more slowly through Earth material at the planet's surface and are predominantly lower frequency than body waves.
• Two types of Surface Waves

  Rayleigh waves and Love waves
• Rayleigh waves


  Was predicted in 1885 by Lord Rayleigh.