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FUNTION OF EYES AND EARS, 스크린샷 2025-09-10 오후 9.29.24, 스크린샷…

- - - - Muscle that control how much light enters the pupil.
    - - To regulate the amount of light entering the eye by changing it's size.
    - - Transparent disc that changes shape to focus light onto the retina.
    - - layer of light receptor cells that detect light intensity in colour.
    - - Fovear is a region of the retina with the highest desity of cones where the eyes see particularly good detail.
    - - To protect the eye form injury and to maintain the eyes shape.
    - - Supply blood formal oxygen, nutrients to the retina.
- - - - ear canel
        
        to connecting the outer and inner ear
    - - ear drum
        
        a thing membrane that vibrates when sound wave hit it.
      - malleus
        
        first ossicle bone
      - incus
        
        the second ossicle bone
    - - cochlea
        
        convert sound vibration into electrical nerve impulses
      - semicircular canals
        
        to detect rotational movement of the head contributing to the sense of the balance
      - facial nerves
        
        provides general sensory innervation to the ear drum
      - vestibular nerves
        
        detect rotational head movement like turning tilting and sense this information to the brain to help maintain balance and stable vision during movement.
- - - - Gravitational waves is the ripples in the fabric of space-time cause by moving things. We are not able to look at it with normal human's eyes. It can make things like light and sound travel in speed of light. It look like how the pond have waves on it if we throw something in the pond.
    - - When people move up and down, we can see the wave travel the around the stadium.
    - - Some of animals use infrasound to communicate with their own species like elephant. But we are not able to hear because humans are only able to hear 20 Hertz (Hz) to 20,000 Hertz (Hz) and infrasound is under 20 Hertz (Hz).
    - - X-ray is similar to light but they have very short wavelength. So they can easily pass through many thing. And that is how we scan inside our body.