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Senses (Types of sensory receptors, based on type of stimuli (Nociceptor…

- - - - Choroid
        
        Black
        
        Absorbs light
        
        Prevents scattering
        
        Nourish other layers; Especially retina
      - Ciliary body
        
        Continuous with choroid
        
        Encircles the lens
        
        Thickened ring of tissue
      - Iris
        
        Pupil hole
        
        Allows light to enter the eye
        
        Smooth muscle
        
        Dilate/Constricts eye to allow more/less light in
        
        Sphineter
        
        Lens
        
        Focuses light on retina
    - - Retina
        
        Tan
        
        Very thin
        
        Photoreceptors location
      - Optic Nerve
        
        Runs from the eye to the brain
    - - Cornea
        
        Transparent
        
        Lets light in
        
        Helps focus light on retina
        
        Dense connective tissue
      - Sclera
        
        White
        
        Anchor for the muscle
        
        Dense connective tissue
        
        Gives shape
        
        Protection
  - - - Operate best in bright light
      - Sensitive to color
    - - Most abundant
      - Sensitive to light
  - - - Contains only cones
      - Light focuses here
      - Clearest vision
      - Center of macula lutea
    - - No photoreceptors
      - Blind spot
    - - Yellow spot
      - Outer to fovea centralis
  - - - Filled with vitreous humor
        
        Thick
        
        Supports retina and lens
        
        Clear
      - Maintains pressure in the eye
      - Transmits light
    - - Posterior segment to cornea
      - Anterior chamber
        
        From cornea to iris
      - Aqueous humor
        
        Watery
        
        Maintains pressure in eye
        
        Nourish lens and cornea
        
        Avascular
      - Posterior chamber
        
        From Iris to lens
- - - - Taste stimuli
      - Stretching of tissues
      - Temperature
      - Changes in chemical concentration
  - - - Tendons
      - Ligaments
      - Muscles
      - Joints
- - - - Sensory neurons
      - Epithelial tactile complexes
      - Hair follicle receptors
    - - Tactile corpuscles
      - Lamellar corpuscles
      - Bulbous corpuscle