The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. It is made up of five layers and its main function is to refract light and focus it on the retina. The cornea is responsible for about 70% of the eye’s total refractive power. It also plays …
Sclera is the white outermost layer of the eye. It is a tough, fibrous membrane composed of collagen and elastic fibres. It serves as a protective covering for the other layers of the eye and helps to maintain the shape of the eyeball. It also helps the eyes to move smoothly in their sockets. The …
How are the eyes protected? Eye socket: Depressions in the skull External eye muscles: Fix the eyeballs in the orbit. Eyebrow: The eyebrows act as a shield to keep dirt, sweat, and other debris from entering the eyes. They also help keep the eyelashes from rubbing against the eyes. Eyebrows also provide a physical barrier …
The eye is an organ that detects light and converts it into electro-chemical impulses in neurons. The eyes enable us to see and help us to interpret the world around us. The eye has a number of components which include the cornea, iris, pupil, lens, retina, choroid, and optic nerve. The cornea is a transparent …
Cause Epilepsy is caused by abnormal electrical activity in the brain. This can be caused by a variety of things, such as genetic factors, head injuries, stroke, infections, or even stress. This irregular flow of electrons can cause a seizure, which is a sudden burst of involuntary muscle contractions. Symptoms Convulsions, muscle spasms, loss of …
Cause Parkinson’s disease is a neurological disorder caused by the degeneration of nerve cells in the brain that produce dopamine. The exact cause of Parkinson’s disease is unknown, but researchers believe that environmental and genetic factors may play a role in its development. It is believed that exposure to certain toxins, such as pesticides, may …
Cause Alzheimer’s disease is caused by the build up of abnormal proteins called amyloid beta and tau in the brain. These proteins form clumps called plaques and tangles, which damage nerve cells and lead to cognitive decline. Symptoms Common Alzheimer’s symptoms include memory loss, difficulty organizing thoughts and reasoning, language problems, difficulty recognizing familiar faces, …
The parasympathetic system is part of the autonomic nervous system and is responsible for controlling body processes such as digestion, urination, and defecation. It is also responsible for controlling the resting and digestive functions of the body. The organs of the parasympathetic system include the following: The oculomotor nerve – controls eye movements. The …
Parasympathetic system – പാരസിംപതിറ്റിക് സിസ്റ്റം Read More »
The sympathetic nervous system is part of the autonomic nervous system, which controls and regulates unconscious body functions such as heart rate, digestion, respiration, and internal organ function. Organs of the sympathetic system include: Adrenal Glands: These are two small glands that sit atop the kidneys and produce hormones, such as adrenaline and cortisol, that …
Brahmagupta was an Indian mathematician and astronomer who lived in the early 7th century CE. He was born in the city of Bhinmal in the state of Rajasthan, India, and is believed to have lived and worked in the city of Ujjain, which was a major center of learning in ancient India. Brahmagupta is best …