"The ability to recognize light patterns in the surroundings and translate them into images is known as vision. The following are the physiological events of vision: Light entering the eye is refracted. Accommodation of the lens focuses the picture on the retina. Image convergence. Hearing is the process through which the ear converts sound waves in the environment into nerve impulses, which are then transmitted to the brain and interpreted as noises. The outer ear is in charge of sound collecting and amplification. The air-filled external auditory canal carries sound pressure waves to the eardrum. The air-filled middle ear's ossicles send vibrations from the eardrum to the oval window, a tiny drum. Humans have a biological mechanism that causes movement called the muscular system. Muscle is a contractile tissue produced from embryonic germ cells' mesodermal layer. Its job is to generate force and cause motion, whether it's locomotion or internal organ movement. The central nervous system regulates voluntary muscle contraction. The brain sends signals to the motor neuron, which innervates numerous muscle fibres, via the neurological system. The skeletal muscle is voluntarily contracted. Non-conscious brain activity or impulses that travel via the body to the muscle cause involuntary muscular contraction."

Ridhi Kumari

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