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Awon Lor Nervous System (Senses (Stimulus Types Receptors (Chemoreceptors,…

- - - - Surrounds neuron cell bodies in ganglia and regulates what goes in and out
    - - Creates myelin sheaths around axons
    - - Simple cuboidal epithelium with microvilli in venticles
    - - Destroy invading microbes and damaged or dying nervous tissues
    - - Most abundant and maintain proper chemical environment
    - - Create myelin sheaths to support axons
- - - - Internal organs
    - - Muscle, ligament, joints, and tendon
    - - Skin and special senses (sight, hearing, taste, etc.)
  - - - Tunic layer
        
        Fibrous layer
        
        Sclera
        
        A white dense connective tissue that is an anchor for the extrinsic eye muscles and gives shape and protection to eyes.
        
        Cornea
        
        It is transparent and allows light to travel through the eyes.
      - Vascular layer
        
        Choroid
        
        Helps nourish other layers and absorbs light in order to avoid light from scattering within the eyes.
      - Inner layer
        
        Retina
        
        Rods
        
        It's the most abundant and sensitive to light
        
        Cones
        
        Helps to see colors and works best in brightness
      - Lens
        
        It's important for focusing light to the retina
      - Iris
        
        It is anterior to the lens and posterior to the cornea. It's the colored part of the eyes and works with the dilation/constriction of the pupil
      - Optic disc
        
        Blind spot of the eyes
      - Macula lutea
        
        It's part of the retina and opposite of the pupil. Where you'll have the clearest vision
      - Posterior Segment
        
        Filled with vitreous humor the helps transport light, supports the retina and lens, and maintain pressure within the eyes
    - - Cornea - Lens - Retina - Optic nerves - Optic chiasma - Optic tract - Mid brain - Thalamus - Primary visual cortex
  - - - pseudostratified columnar epithelium with olfactory sensory neurons
    - - Olfactory sensory neurons - Olfactory bulb - Olfactory tract - Primary olfactory cortex (and Limbic region)
  - - - Facial nerve cranial nerves VII, Glossopharyngeal cranial nerves IX, Vagus cranial nerve X
    - - Gustation - Taste buds with receptor cells - 3 cranial nerves - Medulla Oblongata - Thalamus - Primary gustatory cortex
  - - - External ear, middle ear, internal ear, and the cochlea
    - - Tympanic membrane - Transmit vibrations - Middle ear - Auditory ossicles - Transmit vibrations - Cochlea - Cochlear nerve - Medulla Oblongata - Pons - Mid brain - Thalamus - Primary auditory cortex
- - - - Brain and spinal cord
    - - Receive and process/respond to sensory inputs
  - - - Cranial nerves, Spinal nerves, and ganglia nerves
    - - Gathers and passes sensory information from receptors to the central nervous system
  - - - Mainly to skin, body walls, and skeletal muscles
    - - To skin, skeletal muscles, and joints
  - - - Mainly to smooth muscles/cardiac muscles, glands, arrector pili muscles, and smooth muscles of blood vessels
    - - Mainly to ventral body cavity content, gustation, and olfaction