The retina of the eye can be compared with Film. Like film in a conventional camera, the retina receives and processes incoming light, converting it into neural signals that are transmitted to the brain for interpretation as visual information.
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The element that plays the main role in blood clotting is Ca (calcium). Calcium ions are essential for the coagulation cascade, where they participate in various reactions that lead to the formation of a blood clot to stop bleeding.
The normal fasting blood sugar level per 100 ml of blood in humans is 80-100 mg. This range represents the typical concentration of glucose in the blood after an overnight fast and serves as a standard reference for assessing glycemic ...
At higher altitudes, the red blood cells in the human body will increase in number. This physiological response, known as erythropoiesis, occurs to compensate for lower oxygen levels at higher altitudes, ensuring adequate oxygen delivery to tissues.
The normal level of cholesterol in human blood is 140-180 mg. This range represents the typical concentration of cholesterol in the bloodstream and serves as a standard reference for assessing cardiovascular health and lipid metabolism.
If the radius of blood vessels of a person decreases, the blood pressure will increase. This is due to the increased resistance to blood flow caused by the narrowed vessels, leading to higher pressure exerted against the vessel walls.
The hardest part of the body of a vertebrate animal is Enamel. Enamel is the outermost layer of teeth and is primarily composed of hydroxyapatite, making it extremely hard and durable, even harder than bone.
The hardest substance in the human body is Dentin. Dentin is a calcified tissue that forms the bulk of a tooth, providing structural support and protection. It is harder than both bone and nail.
The upper surface of the skin is called Epidermis. The epidermis is the outermost layer of the skin, providing a protective barrier against environmental factors and containing cells responsible for pigment production and keratinization.
The pigment that gives color to human skin is Melanin. Melanin, produced by melanocytes in the skin, determines skin tone and provides protection against the harmful effects of ultraviolet (UV) radiation from the sun.